Block Island, Rhode Island Weather Conditions

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Current Conditions

  • 39°
  • Overcast
  • Wind: NE 7 mph
  • Humidity: 87%
  • Visibility: 10.0 miles
  • Dew Point: 36°
  • Pressure: 30.35 in. 0
  • Heat Index: 34

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Next 12 Hours

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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Chance of Rain
  • High: 48 °
  • Low: 43 °
  • Chance of Rain
  • Tuesday
  • Chance of a Thunderstorm
  • High: 50 °
  • Low: 46 °
  • Chance of T-Storms
  • Wednesday
  • Chance of a Thunderstorm
  • High: 55 °
  • Low: 48 °
  • Chance of T-Storms
  • Thursday
  • Chance of Rain
  • High: 54 °
  • Low: 37 °
  • Chance of Rain
  • Friday
  • Partly Cloudy
  • High: 45 °
  • Low: 41 °
  • Partly Cloudy

Forecast for Block Island, Rhode Island

Updated: 10:00 AM EST on December 22, 2014

  • Monday

    Overcast with a chance of rain. High of 48F. Winds from the ENE at 5 to 20 mph. Chance of rain 20%.

  • Monday Night

    Overcast with a chance of rain, then rain showers after midnight. Low of 43F. Breezy. Winds from the North at 20 to 25 mph shifting to the East after midnight. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Tuesday

    Overcast with rain. High of 50F. Breezy. Winds from the East at 15 to 25 mph with gusts to 30 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Tuesday Night

    Overcast with a chance of a thunderstorm and a chance of rain, then a chance of a thunderstorm and rain showers after midnight. Fog overnight. Low of 46F. Winds from the SSE at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.4 in. possible.

  • Wednesday

    Overcast with a chance of a thunderstorm and rain showers, then rain showers in the afternoon. Fog early. High of 55F. Breezy. Winds from the South at 10 to 20 mph with gusts to 30 mph. Chance of rain 90% with rainfall amounts near 0.5 in. possible.

  • Wednesday Night

    Overcast with a chance of a thunderstorm and rain, then a chance of rain after midnight. Fog overnight. Low of 48F. Windy. Winds from the SSW at 25 to 35 mph. Chance of rain 80% with rainfall amounts near 1.0 in. possible.

  • Thursday

    Overcast with a chance of rain. Fog early. High of 54F. Windy. Winds from the SW at 25 to 35 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Thursday Night

    Partly cloudy. Low of 37F. Windy. Winds from the West at 25 to 40 mph.

  • Friday

    Partly cloudy. High of 45F. Breezy. Winds from the West at 20 to 25 mph.

  • Friday Night

    Mostly cloudy. Low of 41F. Breezy. Winds from the West at 15 to 20 mph.

  • Saturday

    Partly cloudy. Fog early. High of 48F. Breezy. Winds from the SW at 20 to 25 mph.

  • Saturday Night

    Partly cloudy. Low of 39F. Breezy. Winds from the WSW at 20 to 25 mph.

  • Sunday

    Partly cloudy. High of 43F. Windy. Winds from the WNW at 25 to 30 mph.

  • Sunday Night

    Partly cloudy. Low of 30F with a windchill as low as 23F. Windy. Winds from the NW at 20 to 30 mph.

  • Monday

    Mostly cloudy. High of 39F with a windchill as low as 25F. Winds from the NW at 5 to 15 mph shifting to the SW in the afternoon.

  • Monday Night

    Overcast with a chance of snow. Fog overnight. Low of 32F. Winds from the West at 5 to 15 mph. Chance of snow 30%.

  • Tuesday

    Overcast. Fog early. High of 37F. Winds from the WNW at 5 to 10 mph.

  • Tuesday Night

    Mostly cloudy. Low of 30F with a windchill as low as 23F. Winds from the WNW at 10 to 15 mph.

  • Wednesday

    Partly cloudy. High of 36F with a windchill as low as 21F. Winds from the WNW at 10 to 15 mph.

  • Wednesday Night

    Partly cloudy. Low of 27F with a windchill as low as 19F. Winds from the WNW at 10 to 15 mph.

  • Thursday

    Partly cloudy. High of 32F with a windchill as low as 16F. Winds from the WNW at 10 to 15 mph.

  • Thursday Night

    Clear. Low of 27F with a windchill as low as 18F. Winds from the WNW at 10 to 15 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Block Island Water Tower, New Shoreham, RI

Updated: 9:46 AM EST

Temperature: 39.2 °F Dew Point: 38 °F Humidity: 94% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: West Beach Quonnie, Quonochontaug, RI

Updated: 9:43 AM EST

Temperature: 39.3 °F Dew Point: 36 °F Humidity: 86% Wind: West at 7.0 mph Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: RAWS NINIGRET RI US, Wakefield, RI

Updated: 8:25 AM EST

Temperature: 36 °F Dew Point: 32 °F Humidity: 84% Wind: NNE at 10 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Near Charlestown Beach, Charlestown, RI

Updated: 9:40 AM EST

Temperature: 36.8 °F Dew Point: 37 °F Humidity: 100% Wind: NNE at 4.0 mph Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Snug Harbor, RI, Wakefield, RI

Updated: 9:45 AM EST

Temperature: 38.5 °F Dew Point: 36 °F Humidity: 90% Wind: NE at 9.0 mph Pressure: 30.39 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Westerly, RI

Updated: 9:40 AM EST

Temperature: 39.3 °F Dew Point: 36 °F Humidity: 86% Wind: NE at 9.0 mph Pressure: 30.40 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Brush Hill Road, South Kingstown, RI

Updated: 9:42 AM EST

Temperature: 36.9 °F Dew Point: 35 °F Humidity: 93% Wind: North at - Pressure: 30.25 in Hourly Precipitation: - Windchill: 37 °F Graphs

Location: Pasquiset Pond, Charlestown, RI

Updated: 9:44 AM EST

Temperature: 37.7 °F Dew Point: 35 °F Humidity: 91% Wind: North at 3.0 mph Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Shannock Rd, Charlestown, RI

Updated: 9:45 AM EST

Temperature: 37.0 °F Dew Point: 35 °F Humidity: 91% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Stone Cove Marina, Wakefield, RI

Updated: 9:46 AM EST

Temperature: 37.4 °F Dew Point: 36 °F Humidity: 93% Wind: NNW at 2.0 mph Pressure: 30.38 in Hourly Precipitation: - Windchill: 37 °F Graphs

Location: Narragansett, Narragansett, RI

Updated: 9:46 AM EST

Temperature: 37.4 °F Dew Point: 35 °F Humidity: 91% Wind: North at 5.0 mph Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: APRSWXNET Westerly RI US, Pawcatuck, CT

Updated: 8:35 AM EST

Temperature: 34 °F Dew Point: 33 °F Humidity: 96% Wind: ENE at 4 mph Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 30 °F Graphs

Location: Beaver River Inn, Richmond, RI

Updated: 9:46 AM EST

Temperature: 38.1 °F Dew Point: 32 °F Humidity: 78% Wind: Calm Pressure: 30.45 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Bonnet Shores Beach Club, Narragansett, RI

Updated: 9:46 AM EST

Temperature: 37.9 °F Dew Point: 36 °F Humidity: 92% Wind: NW at 6.0 mph Pressure: 30.35 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: West Passage of Narragansett Bay, near Beavertail, Jamestown, RI

Updated: 9:45 AM EST

Temperature: 38.0 °F Dew Point: 37 °F Humidity: 96% Wind: North at 10.0 mph Pressure: 30.42 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Montauk School, NY

Updated: 7:15 AM EST

Temperature: 39.0 °F Dew Point: 38 °F Humidity: 95% Wind: NNE at 13.0 mph Pressure: 30.66 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Canonchet Woods, Hopkinton, RI

Updated: 9:46 AM EST

Temperature: 39.0 °F Dew Point: 35 °F Humidity: 84% Wind: North at 2.0 mph Pressure: 30.43 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: James Trail, Richmond, RI

Updated: 8:43 AM EST

Temperature: 34.3 °F Dew Point: 30 °F Humidity: 83% Wind: Calm Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Hawks Nest Point, Fishers Island, NY

Updated: 9:45 AM EST

Temperature: 41.4 °F Dew Point: 38 °F Humidity: 88% Wind: NE at 16.0 mph Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Richmond, Richmond, RI

Updated: 9:45 AM EST

Temperature: 35.9 °F Dew Point: 34 °F Humidity: 94% Wind: ENE at 1.0 mph Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Narragansett, Narragansett, RI

Updated: 9:40 AM EST

Temperature: 35.2 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: - Windchill: 35 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Taunton Massachusetts 
700 am EST Monday Dec 22 2014 


Synopsis... 


A wave of low pressure will bring periods of wet weather mainly late 
tonight into Tuesday night...which may begin as a brief period of 
frozen precipitation across northwest and north central 
Massachusetts. A much stronger storm passing well to our west 
Wednesday into Christmas morning will bring heavy rain...gusty winds 
and probably minor coastal flooding. Dry weather with above normal 
temperatures expected Christmas afternoon into Saturday. Low 
pressure may bring a return to unsettled weather by next Sunday. 


&& 


Near term /until 6 PM this evening/... 


7 am update... 


Despite upper level ridging aloft...east to southeast flow just off 
the deck was enough to result in low level lift for scattered rain 
showers just east of the Massachusetts coast. Based on radar imagery and 
latest mesoscale models...opted to increase probability of precipitation today 
across eastern New England for scattered showers. Ptype...on 
eastern Massachusetts coast mainly rain showers but a few flakes could mix in 
across northeast Massachusetts this morning. Further inland...across the 
interior it will be cold enough for a few snow showers/flurries but 
main focus will be on the eastern Massachusetts coast. Therefore...just 
expect a few snow showers/flurries and much of the day will be dry 
across the interior. 


As for high temperatures...low level northeast flow and cloudy skies 
probably keep highs in the middle 30s across the interior. Onshore 
flow will allow coastal locations to see highs in the upper 
30s to the lower 40s...with even middle 40s on cape and islands. 


&& 


Short term /6 PM this evening through 6 PM Tuesday/... 
tonight into tomorrow... 


*light freezing rain is possible across the interior northwest and 
northern Worcester hills* 


A weak area of low pressure develops along a warm front off the middle 
Atlantic...drifting northward toward the area. This low remains weak 
as the warm front moves slowly northward tonight into tomorrow. 
Decent warm advection ahead of this wave with several hi-res 
guidance models shows a potential for cold air damming across the 
interior into Tuesday morning. Biggest question will be the 
moisture potential...is there enough to develop precipitation especially tonight? 
Guidance does show enough lift ahead of approaching surface low per 
the GFS/ec so anticipate precipitation to develop and overspread across 
southern New England. If this plays out with cold air damming and 
warm air advection...then we could see freezing rain/drizzle across 
the interior northwest and northern Worcester Hills very late 
tonight into Tuesday morning. A Winter Weather Advisory may be 
needed. 


As surface low continues to move northward...and high pressure over 
eastern Canada...anticipate an increasing low level jet. This southeasterly 
jet will continue to feed moisture into the region and with 
soundings show a very saturated profile could see numerous showers 
with perhaps a few heavy downpours. Noticed guidance has 
increased the quantitative precipitation forecast over the past few days. As the weak surface low 
moves north of southern New England...warm front will lift 
northward so all precipitation by the late morning will be in the liquid 
form. 


We could also see some minor coastal flooding concerns on Tuesday 
with due easterly flow increasing to about 20 to 25 miles per hour. See below 
for more details. 


&& 


Long term /Tuesday night through Sunday/... 
highlights... 


* periods of rain Tuesday night into xmas morning will be heavy at times 
* dry by Christmas afternoon but windy 
* temperatures around 60 for some late Wednesday into Christmas morning 
* dry but above normal temperatures continue Friday and Sat 
* unsettled weather may return by sun but low confidence 


Details... 


Tuesday night into Christmas... 


Strong shortwave will dig across the central U.S. And allow deep 
south to southwest flow aloft across southern New England. This 
will send and anomalous mild airmass into southern New England for 
late December. Gefs showing precipitable waters  4 to 5 Standard deviations above 
normal by Wednesday night across our region. While heavy rain is still 
expected...the models have cut down on the quantitative precipitation forecast in the last few runs. 
The main low still passes well to our west across Great Lakes...but 
their slower and weaker with secondary development across our 
region. This results in a weaker low level jet...hence less quantitative precipitation forecast. 
Given anomalous precipitable waters  in place...do not want to completely let our 
guard down with the potential for flooding...but does appear 
somewhat less of a risk than yesterday. Nonetheless...still expect 
typical nuisance poor drainage street flooding. 


As for timing...southerly flow aloft will result in scattered 
showers Tuesday night. Bulk of the rain will occur Wednesday into early 
Christmas day when strongest forcing coincides high precipitable water airmass. 
Some of this rain will be heavy at times may result in nuisance poor 
drainage street flooding. Still a low risk for more significant 
flooding given extremely high precipitable waters ...but slower development of 
secondary low pressure may be a limiting factor. Regardless... 
expect 1 to 3 inches of rain. Will continue to mention a slight 
chance of thunder with showalter indices near zero. 


The bulk of the rain should come to an end Christmas morning with 
temperatures probably around 60 for much of the region. While gusty 
southerly winds are expected Wednesday night...inversion and weaker low 
level jet will probably keep most areas below advisory criteria. 
Still have to watch for a small window on the coastal plain especially if 
temperatures can exceed 60...but higher confidence in wind on Christmas 
afternoon and evening behind the system. Increasing westerly wind 
aloft and steepening lapse rates will bring the potential for these 
winds. Decent shot at a period of 35 to 50 miles per hour gusts behind this 
system Christmas afternoon and evening. While the GFS is an 
outlier...it would even suggest the potential for high wind criteria 
to be met with 70 knots at 850 mb. That may be overdone...but 
something will have to keep an eye on the next few days. 


Friday and Saturday... 


Upper level ridge off the southeast coast will keep keep US in mild 
southwest flow aloft. Dry weather expected with forcing for any 
precipitation will to our northwest. Highs mainly in the 40s to 
lower 50s. 


Sunday... 


Confidence in the forecast GOES down considerably over this time. 
Developing upper level ridging into Alaska will send the polar jet 
southward into the central U.S. At the same time...upper level 
ridge off the southeast coast will try to hang tough. The GFS 
insists on dry and colder weather arriving...but were not convinced. 
Given the Southeast Ridge...it may hold the cold air up and allow 
developing low pressure to track near New England sun and Sun night. 
This could bring rain or snow depending on its track...obviously a 
week out so plenty of uncertainty but would lean towards another 
system and away from the dry GFS. 


&& 


Aviation /12z Monday through Friday/... 
forecaster confidence levels... 


Low...less than 30 percent. 
Moderate...30 to 60 percent. 
High...greater than 60 percent. 


Short term /through Tuesday/... 


7 am update... 


Today...high confidence. Mainly MVFR conditions but some localized 
IFR conditions possible along the coast and Worcester Hills. A few 
showers expected along eastern Massachusetts coast with perhaps a passing 
flurry/snow shower or two across the interior. 


Tonight...moderate confidence. Mainly MVFR conditions continue in 
scattered light snow showers. Light freezing rain possible late Monday night 
across northwest Massachusetts. 


Tuesday...moderate confidence. MVFR conditions may drop to IFR 
within and heavy rain fall. Visibilities will be reduced to 5sm or less 
as well. 


Kbos terminal...moderate confidence. 


Kbdl terminal...moderate confidence. 


Outlook...Tuesday night through Friday... 


Tuesday night into Thursday morning...moderate confidence. 
Widespread low end MVFR to IFR conditions expected in periods of 
heavy showers/low clouds and fog patches. A period of southerly 
wind gusts of 30 to 40 knots expected on the coastal plain Wednesday 
night. Low level wind shear also a concern for the entire region Wednesday into early Thursday. 


Thursday afternoon into Friday...moderate to high confidence in 
mainly VFR. However...a period of westerly 30 to 45 knot wind gusts 
possible Thursday afternoon and evening. 


&& 


Marine... 
forecaster confidence levels... 


Low...less than 30 percent. 
Moderate...30 to 60 percent. 
High...greater than 60 percent. 


Short term /through Tuesday/...moderate to high confidence. 


High pressure across Quebec and the Maritimes will result in 
persistent northeasterly to easterly winds across the waters through 
today. This will build seas to 5ft on the eastern waters despite 
wind gusts up to 20 knots. Have continued Small Craft Advisory. 


Approaching surface low pressure from the middle-Atlantic tonight will 
help increase an easterly low level jet over the water tomorrow. This will 
build the seas between 5-8 feet. Could see wind gusts between 20-30 
kts as the front passes. Small Craft Advisory has been expanded accordingly. 


Outlook...Tuesday night through Friday...moderate confidence 


Tuesday night...long fetch easterly flow will continue to result in 
Small Craft Advisory seas across the outer-waters with high pressure moving east of 
the Canadian Maritimes. Winds should generally be below small craft 
thresholds. 


Wednesday into early Thursday...intensifying low pressure passing 
well to our west will cause winds to turn southerly and become 
gusty. Small craft wind gusts are a lock. The main uncertainty is 
do we see southerly gales develop Wednesday night. Strong low level jet 
present...but we will be dealing with an inversion over the 
relatively cool ocean. Regardless...still should see at least a 
period of near gale force southerly wind gusts. 


Later Thursday into Friday...a period of westerly gale force wind 
gusts appears likely in the cold advection pattern behind the storm 
Thursday afternoon and night. Winds should diminish some on Friday. 


&& 


Tides/coastal flooding... 
high astronomical tides occur Tuesday and Wednesday. 


East Massachusetts coast: 


Tuesday...high tide at Boston will be 11.6 feet at midday. Winds will 
be from the east at 10 to 15 knots...so there will be onshore flow 
during this high tide. While this is nothing too strong...given the 
high astro tide expect some splash over/minor coastal flooding. 
Certainly do not expect to see any significant issues. 


Wednesday...high tide at Boston will be 11.7 feet at midday. Winds 
will be from the southeast near 10 knots but there will be some 
pressure falls with intensifying low pressure to our west. This 
should be enough for more splash over/minor coastal flooding with 
the high astro tides. However...do not expect any significant 
problems given winds/seas should be held in check during the time of 
high tide. 


South coast: 


Wednesday evening...southerly winds are expected and astronomical 
tides increase along the South Coast. High tide in Providence will 
be 5.2 feet that evening. 925 mb low level jet strengthens to 55-65 kts which 
could push a 1 to 2 foot surge up along the South Coast during the 
time of high tide. The low level inversion will probably hold the 
strongest winds just above the ground...so thinking the risk is for 
splash over and minor coastal flooding. There still is a low risk 
for moderate coastal flooding...but that is often hard to get in a 
non-tropical system along the South Coast. 


&& 


Box watches/warnings/advisories... 
CT...none. 
Massachusetts...none. 
Rhode Island...none. 
Marine...Small Craft Advisory from 1 am to 7 PM EST Tuesday for anz231- 
232-251-256. 
Small Craft Advisory from 1 PM this afternoon to 7 PM EST 
Tuesday for anz250-254. 
Small Craft Advisory from 10 PM this evening to 7 PM EST 
Tuesday for anz255. 


&& 


$$ 
Synopsis...Frank/dunten 
near term...Frank/dunten 
short term...dunten 
long term...Frank 
aviation...Frank/dunten 
marine...dunten/Frank 
tides/coastal flooding...Frank 



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