Block Island, Rhode Island Weather Conditions

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Current Conditions

  • 38°
  • Clear
  • Wind: Calm
  • Humidity: 89%
  • Visibility: 10.0 miles
  • Dew Point: 35°
  • Pressure: 30.00 in. -

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Next 12 Hours

2  am
5  am
8  am
11  am
2  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
46°
46°
45°
52°
54°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Chance of Rain
  • High: 60 °
  • Low: 38 °
  • Chance of Rain
  • Saturday
  • Rain
  • High: 52 °
  • Low: 37 °
  • Rain
  • Sunday
  • Partly Cloudy
  • High: 46 °
  • Low: 30 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 52 °
  • Low: 41 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 59 °
  • Low: 50 °
  • Partly Cloudy

Forecast for Block Island, Rhode Island

Updated: 11:00 PM EDT on October 30, 2014

  • Friday

    Partly cloudy with a chance of rain in the afternoon. High of 57F. Winds from the NE at 5 to 10 mph. Chance of rain 20%.

  • Friday Night

    Overcast with a chance of rain, then rain after midnight. Low of 46F. Winds from the NE at 10 to 15 mph. Chance of rain 60%.

  • Saturday

    Overcast with rain. High of 52F. Windy. Winds from the NNE at 15 to 20 mph with gusts to 35 mph. Chance of rain 80% with rainfall amounts near 0.2 in. possible.

  • Saturday Night

    Overcast with a chance of rain. Low of 37F. Windy. Winds from the North at 15 to 20 mph with gusts to 35 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.

  • Sunday

    Clear. High of 46F. Windy. Winds from the NNW at 20 to 25 mph with gusts to 40 mph.

  • Sunday Night

    Clear. Low of 30F with a windchill as low as 21F. Breezy. Winds from the NW at 20 to 25 mph.

  • Monday

    Partly cloudy in the morning, then clear. High of 52F. Windy. Winds from the WNW at 20 to 30 mph.

  • Monday Night

    Clear in the evening, then partly cloudy. Low of 41F. Breezy. Winds from the WNW at 10 to 20 mph.

  • Tuesday

    Partly cloudy. High of 59F. Winds from the WSW at 5 to 15 mph.

  • Tuesday Night

    Mostly cloudy. Low of 50F. Breezy. Winds from the WSW at 15 to 20 mph.

  • Wednesday

    Mostly cloudy. High of 61F. Winds from the WSW at 10 to 15 mph.

  • Wednesday Night

    Overcast. Low of 52F. Breezy. Winds from the SSW at 10 to 20 mph.

  • Thursday

    Overcast with a chance of rain. High of 66F. Breezy. Winds from the SSW at 15 to 20 mph. Chance of rain 50%.

  • Thursday Night

    Mostly cloudy with a chance of rain. Low of 46F. Breezy. Winds from the WSW at 20 to 25 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Friday

    Clear. High of 55F. Breezy. Winds from the West at 15 to 25 mph.

  • Friday Night

    Clear. Low of 45F. Breezy. Winds from the WNW at 10 to 20 mph.

  • Saturday

    Partly cloudy with a chance of rain. High of 52F. Winds from the West at 10 to 15 mph. Chance of rain 40%.

  • Saturday Night

    Clear. Low of 43F. Winds from the West at 5 to 15 mph.

  • Sunday

    Clear. High of 59F. Winds from the West at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 46F. Winds less than 5 mph.

  • Monday

    Clear. High of 52F. Winds from the WNW at 5 to 10 mph.

  • Monday Night

    Clear. Low of 46F. Winds from the NW at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Block Island Water Tower, New Shoreham, RI

Updated: 12:46 AM EDT

Temperature: 49.4 °F Dew Point: 39 °F Humidity: 68% Wind: Calm Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: RAWS NINIGRET RI US, Wakefield, RI

Updated: 11:25 PM EDT

Temperature: 42 °F Dew Point: 34 °F Humidity: 74% Wind: NW at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Near Charlestown Beach, Charlestown, RI

Updated: 12:41 AM EDT

Temperature: 39.4 °F Dew Point: 38 °F Humidity: 96% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: Snug Harbor, RI, Wakefield, RI

Updated: 12:46 AM EDT

Temperature: 43.9 °F Dew Point: 38 °F Humidity: 79% Wind: NNW at 2.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Westerly, RI

Updated: 12:34 AM EDT

Temperature: 43.4 °F Dew Point: 38 °F Humidity: 80% Wind: NW at 4.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Pasquiset Pond, Charlestown, RI

Updated: 12:33 AM EDT

Temperature: 38.2 °F Dew Point: 36 °F Humidity: 93% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Shannock Rd, Charlestown, RI

Updated: 12:46 AM EDT

Temperature: 37.8 °F Dew Point: 37 °F Humidity: 97% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Narragansett, Narragansett, RI

Updated: 12:33 AM EDT

Temperature: 41.7 °F Dew Point: 38 °F Humidity: 85% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Fishers Island, Fishers Islandd, NY

Updated: 12:41 AM EDT

Temperature: 46.9 °F Dew Point: 30 °F Humidity: 53% Wind: East at 1.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Bonnet Shores Beach Club, Narragansett, RI

Updated: 12:46 AM EDT

Temperature: 45.3 °F Dew Point: 38 °F Humidity: 77% Wind: NNW at 2.9 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

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

Updated: 12:46 AM EDT

Temperature: 46.0 °F Dew Point: 41 °F Humidity: 83% Wind: NNE at 4.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Canonchet Woods, Hopkinton, RI

Updated: 12:46 AM EDT

Temperature: 36.9 °F Dew Point: 35 °F Humidity: 93% Wind: North at 1.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Masons Island Marina, Stonington, CT

Updated: 12:46 AM EDT

Temperature: 45.1 °F Dew Point: 40 °F Humidity: 82% Wind: North at 6.9 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Hawks Nest Point, Fishers Island, NY

Updated: 12:46 AM EDT

Temperature: 47.1 °F Dew Point: 40 °F Humidity: 76% Wind: NW at 10.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Richmond, Richmond, RI

Updated: 12:46 AM EDT

Temperature: 37.8 °F Dew Point: 36 °F Humidity: 93% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Narragansett, Narragansett, RI

Updated: 12:40 AM EDT

Temperature: 45.1 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: - Windchill: 45 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Taunton Massachusetts 
1100 PM EDT Thursday Oct 30 2014 


Synopsis... 
high pressure will bring dry and seasonable conditions through 
the end of the work week. A developing coastal storm will move up 
the coast Saturday and pass offshore Saturday night and early 
Sunday. High pressure builds over the eastern U.S. For early next 
week. One or two cold fronts may cross southern New England 
Wednesday and Thursday. 


&& 


Near term /until 6 am Friday morning/... 
1030 PM update... 
light pressure gradient continues as high pressure remains across the 
region at 02z. Winds are generally calm...though higher terrain 
has a bit more winds. Noting northwest wind at 8-10 knots at korh and north-northwest 
wind at 8 knots at kmqe...both elevated locations. Temperatures have fallen 
back to the middle-upper 30s at the normally colder locations thanks 
to radiational cooling...down to 36 at kore and 37 at ktan. 


Skies were becoming mostly clear at most locations as noted on 
latest infrared satellite trends...though area of clouds continues 
across southeast Massachusetts as well as across S New Hampshire/northwest Massachusetts. 


Where temperatures were falling back close to dewpoints...have added mention 
of patchy fog after midnight...generally in the normally prone 
areas across east interior Massachusetts as well as the CT valley into NE CT and 
even on Marthas Vineyard where temperatures have also fallen below 40 
with calm winds. 


Have updated forecast to bring conditions current and work changes 
mentioned above into near term. 


Previous discussion... 
expect light northwesterly winds to shift to the northeast 
overnight...which may be enough to keep temperatures from 
completely radiating. Anywhere the winds do drop off to calm... 
the temperatures will drop several degrees fairly quickly. 
Overall...expect lows in the 30s away from the coast. 


&& 


Short term /6 am Friday morning through Friday night/... 
Friday...another quiet day as high pressure lifts to the north. 
With winds shifting to the east as low pressure moves towards 
southern New England from the Carolina coast...expect it to feel a 
bit cooler than today. Otherwise...increasing clouds from the 
approaching coastal low. 


Friday night...while there is some uncertainty in the model 
solutions with the upcoming storm most of this will affect the 
weekends weather so will mostly discuss it in the long term section. 
Should mostly see an increase in clouds overnight. This will keep 
temperatures a few degrees warmer than tonight. In addition...rain 
and/or showers will likely move onto the South Coast and into 
southeast Massachusetts towards daybreak Saturday morning. 


&& 


Long term /Saturday through Thursday/... 
big picture... 


Deep amplitude troughs on both coasts Saturday with a ridge in 
between. Shortwave moving through the eastern trough generates a 
cutoff upper low with two jet streams...a northern stream along the 
Canadian border and a southern stream moving with the short wave. 
The pattern shifts east during the week with the ridge building over 
New England. The pattern then transforms to a more zonal flow. 
Remains of the Pacific coast trough move across New England midweek. 


Colder than normal heights with the weekend trough. These build to 
normal or a little milder than normal by midweek. This points to a 
colder than normal weekend trending to normal temperatures by midweek. 


The GFS...while serviceable...is a bit of an outlier. For the grids 
we will use a blend of model data including HPC and /where possible/ 
the 12z European model (ecmwf). 


The dailies... 


Saturday-Sunday... 


Coastal storm continues to be indicated for Saturday and early 
Sunday. Support comes from two sets of forcing 
mechanisms...suggesting a two-part event. But fine-tuning the timing 
of these parts is difficult this far out. Initial forcing comes from 
right entrance region of northern stream jet Saturday morning. 
Second forcing comes from left exit region of jet supporting 
shortwave rounding the base of the eastern trough late 
Saturday/Saturday night. Even so...most of the frontogenetic forcing 
with each segment is focused on the Maritimes and Maine. The 
western edge of this forcing should extend into southern New 
England with the first and possibly the second of the segments. We 
expect rain Saturday and Saturday night with highest probability of precipitation over 
Cape Cod and the islands...lesser values north and west. 


Strong pressure gradient at the surface and a 50 knot low level jet 
will contribute to windy conditions. The strongest winds will be 
over the eastern/southeast waters. Strongest land winds will be over 
the Outer Cape and islands...diminishing farther west. Have featured 
45 knots for the strongest winds and 20-25 knots in the interior. 


The coastal storm will pass US in pieces Saturday and later Saturday 
night...as noted above. Expect precipitation to diminish west to 
east after midnight and end on the mass East Coast around or shortly 
after sunrise Sunday. 


Temperatures through most of the storm should remain favorable for 
rain. As the winds shift from northeast to northwest Saturday 
night...colder air will be drawn in which could change the last 
showers over to snow. Any accumulations should be no more than a 
trace. Some Highlands such as in the monadnock could pick up a light 
accumulation at storm/S end. 


Drier air Sunday will bring clearing skies. Cold advection will 
promote mixing through at least 850 mb. Winds in this layer will be 
35 to 40 knots...so expect northwest gusts to at least the lower end 
of this range. Winds diminish Sunday night as the storm moves 
farther away. 


Monday-Tuesday... high pressure builds over the region. Monday 
should be sunny as the high moves overhead. Mixing will again 
bring increased wind gusts during the afternoon. Winds in the 
mixed layer are expected around 30 knots with potential for a 
little stronger speeds. Winds will diminish with sunset. 


The high moves offshore Tuesday. This will make room for a warm 
front to swing past. Sufficient lift and moisture to support middle and 
high clouds...but the best warm frontal lift will remain to our 
north and west so expect at least some sun through the day. 


Wednesday-Thursday... low confidence on midweek weather. At least 
one trough in the zonal flow will swing across the region during 
this time. GFS and European model (ecmwf) are hinting at one on Wednesday...but 
showing a more substantial trough passing on Thursday. The forecast 
will have clouds and low-end chance or slight chance probability of precipitation. 


&& 


Aviation /03z Friday through Tuesday/... 
forecaster confidence levels... 


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


Overnight and Friday...high confidence. VFR. 


Friday night...moderate confidence. Conditions deteriorate through 
the night to MVFR/IFR from south to north. Rain/showers expected 
along the South Coast and into southeastern Massachusetts as we near 
daybreak Saturday. 


Kbos...high confidence in taf. 


Kbdl...high confidence in taf. 


Outlook...Saturday through Tuesday...moderate confidence 


Saturday-Sunday...IFR ceilings and MVFR or IFR visibilities in periods of rain 
Saturday and Saturday night. VFR and drier weather move in from west 
to east early Sunday. Northeast winds Saturday gusting 30-40 knots 
on the cape and islands and 25-30 knots in the coastal plain. Winds 
shift to north Saturday night and northwest on Sunday with gusts 40- 
45 knots cape and islands and 30-35 knots across southern New 
England. 


Monday...VFR. Daytime wind gusts will increase to near 30 knots 
inland and 35 knots cape and islands...diminishing toward evening. 


Tuesday...VFR with increasing high clouds. 


&& 


Marine... 
forecaster confidence levels... 


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


Short term /through Friday night/...high confidence. 


High pressure dominates through Friday with winds and seas 
remaining below small craft criteria. Winds shift from the 
northwest to the northeast then east during Friday. These 
easterly winds and seas increase Friday night as low pressure 
approaches the waters from the Carolinas. Small craft advisories 
have been issued for all of the waters for at least a portion of 
Friday night. 


Outlook...Saturday through Tuesday...moderate confidence. 


Saturday...strong potential for high end gales on the outer 
waters with gusts to 45 knots. Low potential of storm force winds 
on the outer waters. Rain with increasing northeast winds. Gale 
force gusts expected on most waters.Wavewatch model forecasts of 
sea heights are lower than our previous forecast. We have bumped 
seas up 2-3 feet with 15 foot seas developing east of 
Massachusetts. A marine weather statement continues to address 
this concern. 


Sunday...rain moves off to the east. Winds shift northwest with gale 
force gusts 40-45 knots. Expect these winds to diminish below gale 
force Sunday night. With the wind shift...the rough seas will 
migrate farther offshore with diminishing seas closer to shore. 
Gale warnings will likely linger into the evening hours. 


Monday... gusty northwest winds with speeds approaching gale force 
again during the day. Winds diminish toward evening. Seas will 
linger at 5-9 feet especially on the outer waters. Small Craft 
Advisory is likely...low-end chance that gales may be needed on some 
of the waters. 


Tuesday...winds and seas will remain below small craft levels. 


&& 


Tides/coastal flooding... 
astronomical high tides are rather low Saturday evening and again 
early Sunday morning. However...strong northerly winds and high 
seas will have the potential to result in minor coastal flooding and 
beach erosion along the eastern Massachusetts coast...particularly the north 
side of Cape Cod and Nantucket Harbor during both high tide cycles. 


The main uncertainty revolves around when and how strong the 
winds/seas will get. The models seem to be showing two pulses of 
wind with two waves of low pressure. The first one appears to be 
Saturday evening with the second one Sunday morning. The potential 
continues for wind gusts up to 50 knots and seas building to 20 feet 
across the open waters east of Massachusetts. The trend of the 12z 
guidance has been to show the strongest winds/highest seas with the 
Saturday evening pulse. Will have to wait and see how the models 
trend...but still feel both high tide cycles are at risk with a 1 to 
2 foot storm surge. 


Areas of greatest concern appear to be the north side of Cape 
Cod...such as Sandwich...Barnstable...Dennis...Brewster and possibly 
Eastham. Other typical hot spots will be Salisbury and Plum 
Island...Hull...Scituate and perhaps Sandwich Harbor and Nantucket 
Harbor. Again...the main concerns will be minor coastal flooding as 
well as beach erosion. 


&& 


Box watches/warnings/advisories... 
CT...none. 
Massachusetts...none. 
New Hampshire...none. 
Rhode Island...none. 
Marine...Small Craft Advisory from midnight Friday night to 8 am EDT 
Saturday for anz231>234-250. 
Small Craft Advisory from 5 am to 8 am EDT Saturday for anz230- 
236-251. 
Small Craft Advisory from 8 PM Friday to 8 am EDT Saturday for 
anz235-237-254>256. 


&& 


$$ 
Synopsis...wtb/rlg 
near term...wtb/evt 
short term...rlg 
long term...wtb 
aviation...wtb/rlg 
marine...wtb/rlg/evt 
tides/coastal flooding...staff 






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