Block Island, Rhode Island Weather Conditions

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Current Conditions

  • 72°
  • Mostly Cloudy
  • Wind: South 10 mph
  • Humidity: 94%
  • Visibility: 3.0 miles
  • Dew Point: 70°
  • Pressure: 29.61 in. 0

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Next 12 Hours

5  am
8  am
11  am
2  pm
5  pm
Thunderstorm
T-storms
Thunderstorm
T-storms
Chance of a Thunderstorm
Chance of T-storms
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
70°
73°
73°
75°
73°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Thunderstorm
  • High: 77 °
  • Low: 66 °
  • T-Storms
  • Tuesday
  • Partly Cloudy
  • High: 77 °
  • Low: 64 °
  • Partly Cloudy
  • Wednesday
  • Clear
  • High: 75 °
  • Low: 66 °
  • Clear
  • Thursday
  • Clear
  • High: 75 °
  • Low: 66 °
  • Clear
  • Friday
  • Partly Cloudy
  • High: 73 °
  • Low: 66 °
  • Partly Cloudy

Forecast for Block Island, Rhode Island

Updated: 5:00 AM EDT on July 28, 2014

  • Monday

    Partly cloudy with thunderstorms. Fog early. High of 77F. Breezy. Winds from the SSW at 15 to 20 mph. Chance of rain 70%.

  • Monday Night

    Partly cloudy. Low of 66F. Breezy. Winds from the West at 15 to 20 mph.

  • Tuesday

    Partly cloudy in the morning, then clear. High of 77F. Winds from the WSW at 5 to 15 mph.

  • Tuesday Night

    Clear. Low of 64F. Winds from the SW at 5 to 10 mph shifting to the NW after midnight.

  • Wednesday

    Clear. High of 75F. Winds from the SE at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 66F. Winds from the SW at 5 to 10 mph.

  • Thursday

    Clear. High of 75F. Winds from the SW at 10 to 15 mph.

  • Thursday Night

    Clear in the evening, then partly cloudy. Low of 66F. Winds from the SW at 5 to 15 mph.

  • Friday

    Partly cloudy. High of 73F. Winds from the South at 5 to 10 mph.

  • Friday Night

    Mostly cloudy. Low of 66F. Winds from the East at 5 to 10 mph.

  • Saturday

    Mostly cloudy with a chance of rain. High of 73F. Winds from the ENE at 5 to 10 mph. Chance of rain 40%.

  • Saturday Night

    Mostly cloudy. Low of 64F. Winds from the ENE at 5 to 10 mph.

  • Sunday

    Partly cloudy with a chance of rain. High of 73F. Winds from the East at 5 to 15 mph. Chance of rain 20%.

  • Sunday Night

    Mostly cloudy. Fog overnight. Low of 66F. Winds less than 5 mph.

  • Monday

    Overcast with a chance of rain. High of 73F. Winds from the South at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Monday Night

    Overcast with a chance of rain. Fog overnight. Low of 66F. Winds from the SW at 5 to 10 mph. Chance of rain 30%.

  • Tuesday

    Partly cloudy. High of 73F. Winds from the SW at 5 to 10 mph.

  • Tuesday Night

    Clear. Fog overnight. Low of 70F. Winds from the SW at 5 to 10 mph.

  • Wednesday

    Partly cloudy. High of 73F. Winds from the WSW at 5 to 10 mph.

  • Wednesday Night

    Partly cloudy. Fog overnight. Low of 64F. Winds from the WSW at 5 to 10 mph.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 73F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 64F. Winds less than 5 mph. Chance of rain 20%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Champlins Road - near Coast Guard, Block Island, RI

Updated: 6:17 AM EDT

Temperature: 72.6 °F Dew Point: 72 °F Humidity: 100% Wind: SSW at 4.0 mph Pressure: 29.57 in Hourly Precipitation: 0.00 in Graphs

Location: West Beach Quonnie, Quonochontaug, RI

Updated: 6:12 AM EDT

Temperature: 69.7 °F Dew Point: 69 °F Humidity: 98% Wind: West at 5.0 mph Pressure: 29.57 in Hourly Precipitation: 0.01 in Graphs

Location: Quonnie, Charlestown, RI

Updated: 6:18 AM EDT

Temperature: 69.6 °F Dew Point: 69 °F Humidity: 99% Wind: West at 6.0 mph Pressure: 29.57 in Hourly Precipitation: 0.07 in Graphs

Location: RAWS NINIGRET RI US, Wakefield, RI

Updated: 5:25 AM EDT

Temperature: 71 °F Dew Point: 70 °F Humidity: 98% Wind: SSE at 5 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Near Charlestown Beach, Charlestown, RI

Updated: 6:14 AM EDT

Temperature: 70.3 °F Dew Point: 70 °F Humidity: 100% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.01 in Graphs

Location: the Breeze, Charlestown, RI

Updated: 6:18 AM EDT

Temperature: 70.3 °F Dew Point: 70 °F Humidity: 98% Wind: West at 1.6 mph Pressure: 29.68 in Hourly Precipitation: 0.02 in Graphs

Location: Snug Harbor, RI, Wakefield, RI

Updated: 6:17 AM EDT

Temperature: 71.8 °F Dew Point: 71 °F Humidity: 97% Wind: Calm Pressure: 29.62 in Hourly Precipitation: 0.00 in Graphs

Location: Westerly, RI

Updated: 6:07 AM EDT

Temperature: 69.4 °F Dew Point: 69 °F Humidity: 99% Wind: South at 3.0 mph Pressure: 29.63 in Hourly Precipitation: 0.03 in Graphs

Location: Pasquiset Pond, Charlestown, RI

Updated: 6:06 AM EDT

Temperature: 71.6 °F Dew Point: 71 °F Humidity: 98% Wind: Calm Pressure: 29.57 in Hourly Precipitation: 0.00 in Graphs

Location: Shannock Rd, Charlestown, RI

Updated: 6:18 AM EDT

Temperature: 71.2 °F Dew Point: 70 °F Humidity: 97% Wind: WSW at 3.6 mph Pressure: 29.54 in Hourly Precipitation: 0.14 in Graphs

Location: Stone Cove Marina, Wakefield, RI

Updated: 6:18 AM EDT

Temperature: 72.1 °F Dew Point: 72 °F Humidity: 100% Wind: South at 6.0 mph Pressure: 29.62 in Hourly Precipitation: 0.00 in Graphs

Location: Fishers Island, Fishers Islandd, NY

Updated: 6:05 AM EDT

Temperature: 70.7 °F Dew Point: -35 °F Humidity: - Wind: Calm Pressure: 29.56 in Hourly Precipitation: 0.05 in Graphs

Location: Bonnet Shores Beach Club, Narragansett, RI

Updated: 6:18 AM EDT

Temperature: 71.1 °F Dew Point: 70 °F Humidity: 98% Wind: SSW at 10.1 mph Pressure: 29.59 in Hourly Precipitation: 0.00 in Graphs

Location: Canonchet Woods, Hopkinton, RI

Updated: 6:17 AM EDT

Temperature: 72.7 °F Dew Point: 72 °F Humidity: 99% Wind: South at 5.0 mph Pressure: 29.65 in Hourly Precipitation: 0.01 in Graphs

Location: Masons Island Marina, Stonington, CT

Updated: 6:17 AM EDT

Temperature: 71.1 °F Dew Point: 70 °F Humidity: 98% Wind: Calm Pressure: 29.56 in Hourly Precipitation: 0.09 in Graphs

Location: Hawks Nest Point, Fishers Island, NY

Updated: 6:17 AM EDT

Temperature: 72.0 °F Dew Point: 69 °F Humidity: 91% Wind: SSE at 5.0 mph Pressure: 29.55 in Hourly Precipitation: 0.06 in Graphs

Location: Richmond, Richmond, RI

Updated: 6:17 AM EDT

Temperature: 71.6 °F Dew Point: 72 °F Humidity: 100% Wind: SE at 1.0 mph Pressure: 29.62 in Hourly Precipitation: 0.07 in Graphs

Location: Noank, Noank, CT

Updated: 6:18 AM EDT

Temperature: 71.4 °F Dew Point: 71 °F Humidity: 99% Wind: ESE at 1.7 mph Pressure: 29.56 in Hourly Precipitation: 0.05 in Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Taunton Massachusetts 
311 am EDT Monday Jul 28 2014 


Synopsis... 
a rather strong low pressure system by July standards will 
move across upstate New York today before heading into northern 
New England tonight. It will bring showers and storms this 
morning...followed by possible strong storms this afternoon. A 
cold front will cross the region tonight and Tuesday...bringing 
drier and less humid weather...as the front remains stalled over 
the Maritimes and New England offshore waters through the weekend. 


&& 


Near term /through today/... 
*** heavy rainfall/storms this morning *** 
*** few strong/severe storms this afternoon *** 


310 am update... 


Band of showers/storms from western and central New York into NYC and 
New Jersey is associated with strong middle level q-vector convergence as 
upper low closes off over eastern Great Lakes. Models in good 
agreement that this activity will lift through southern New 
England through this morning...before shifting farther north this 
afternoon. Most of this may end up affecting locations near S 
coast as opposed to interior per radar trends. 


Main threat this morning is localized flash flooding from heavy 
rainfall...in addition to frequent lightning. Also cannot rule out 
strong wind gusts given environment of rather high 0-6km shear and 
decent middle level lapse rates...though given time of day confidence 
is low that strong winds will be realized. 


Once this initial round of showers/storms lifts north by early 
afternoon...attention then turns to possible redevelopment of 
scattered showers/storms. 


Models insistent that dry slot will work its way up coast into southeast 
New England...and deeper moisture should reside across interior as 
seen in k-index fields. Instability is in question as we are not 
confident on how much clearing will occur...if at all. But 
continued presence of high 0-6km shear /over 35kt/ and good low 
level turning in forecast hodographs suggests potential for at 
least few strong or severe storms this afternoon. Damaging winds 
and hail are main threats...but we cannot rule out an isolated 
weak tornado given highly sheared environment...low local/S and 
presence of closed upper low. System also has history of producing 
a few weak tornadoes thus far as well. 


Given uncertainty in amount of heating...stayed close to model 
blend for highs today /70s to around 80/ which also matches mixing 
to 850 mb /10-11c/. 


&& 


Short term /tonight through 6 PM Tuesday/... 
cold front pushes through region tonight bringing much less humid 
air by daybreak as skies clear. Light winds with leftover moisture 
may lead to patchy fog across interior. 


Ridge of high pressure builds over New England Tuesday...resulting in 
plenty of sunshine. Not much of airmass change so highs once again 
should top off in 70s to around 80 but with low humidity. Weak 
gradient supports afternoon sea breezes along both coasts. 


&& 


Long term /Tuesday night through Sunday/... 
big picture... 


Models continue to advertise a meridional type flow through the 
week. The four lobes of this flow are the Gulf of Alaska 
trough...western North America ridge...eastern North America 
trough...and west Atlantic ridge. 


Models continue to show a weak cold pool in eastern no-am 
trough...sufficient to generate daily instability showers. Also 
showers along the stalled front offshore. The core of the eastern 
no-am trough ejects north through Quebec Friday and Saturday. But a 
weaker trough lingers over the Great Lakes/miss River Valley over 
the weekend. 


The similarity in model fields favors a blend of available data. 


The dailies... 


Tuesday night through Friday... with the upper trough to our west 
and upper ridge to our east...expect the departed cold front to 
align with the upper flow and stall. Upper flow over New England 
will remain from the southwest. Meanwhile cold pool instability 
under the upper trough will be over New York and Ontario while New England 
is under the left entrance region of the upper jet...a subsident 
zone. Surface high pressure will build over southern New England. 
For the most part this looks like a dry weather period with 
dewpoints in the 50s...trending to the lower 60s Friday. 


This will mean a chance of showers well offshore and over 
NY/Ontario. Main concern for precipitation in southern New England 
would be if scattered diurnal showers/thunderstorms from the upper trough 
which could slide across the Berkshires into the CT valley. Surface 
high pressure and the left entrance region of the upper jet will 
favor subsidence and dry weather. We will have slight chance probability of precipitation 
in the Berks Wednesday and west of mht-orh-ijd Thursday-Friday...and 
chance probability of precipitation along/west of the CT valley Thursday-Friday. Patchy fog 
possible each night. 


Saturday-Sunday... as the core of the upper trough lifts 
north...expect the Atlantic high to shift a little to the west. This 
would push the offshore front west closer to the coast and bring an 
increase in the chance of showers...with the best chance on the cape 
and islands. 


&& 


Aviation /07z Monday through Friday/... 
forecaster confidence levels... 


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


Low confidence through 12z...then moderate confidence on trends 
beyond that. 


Conditions lower to IFR/LIFR through 12z as fog/low clouds become 
more widespread. Area of showers/storms lifting NE from NYC area 
will reach CT valley 06z-08z and east Massachusetts coast 08z-10z. Potential for 
gusty winds...heavy rainfall and frequent lightning. 


As this activity lifts into northern New England by early 
afternoon...MVFR ceilings prevail but many areas should improve to VFR 
by 18z. Exception is along S coast where it will take longer for 
lower ceilings to lift. Scattered showers/storms should redevelop 
across interior after 18z...mainly in SW New Hampshire...western/central Massachusetts 
and north CT. 


Improving conditions to VFR after 00z Tuesday...although patchy 
MVFR/IFR possible in fog. VFR Tuesday with afternoon sea breezes. 


Kbos taf...moderate confidence. IFR ceilings/visibilities develop as 
showers/isolated storms arrive after 08z. Fairly confident on 
improving conditions after 15z. Ts should remain west of Airport 
18z-22z. 


Kbdl taf...moderate confidence. IFR ceilings/visibilities develop as 
showers/storms arrive by 08z. Fairly confident in improving 
conditions after 13z. Ts most likely 18z-22z. 


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


VFR. Areas of IFR in early morning fog each day. MVFR ceilings/visibilities in 
widely scattered afternoon thunderstorms mainly west of mht and orh. 


&& 


Marine... 
forecaster confidence levels... 


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


Moderate confidence through Tuesday. Main concern is for rough seas on 
S coastal waters where Small Craft Advisory has been extended into Tuesday. 


S/SW flow prevails today which will lead to building seas on S 
coastal waters...reaching as high as 5 or 6 feet offshore this 
afternoon. This will also maintain patchy dense fog this morning 
on S coastal waters. 


Showers/storms will move across waters this morning from Long 
Island. So far these storms have produced frequent lightning and 
may produce strong wind gusts to 35kt. Possibility of a few more 
storms this afternoon...especially on east Massachusetts waters. 


Cold front approaches waters tonight but expect another round of 
patchy dense fog...at least early tonight before drier air arrives 
overnight. High pressure builds overhead Tuesday with light winds and 
afternoon sea breezes. Seas slowly subside offshore. 


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


Seas generally less than 5 feet through the period...but may 
approach 5 feet on the outer waters Wednesday night and Thursday. 
Light winds through the period...southwest midweek shifting to 
southeast Friday. 


&& 


Box watches/warnings/advisories... 
CT...none. 
Massachusetts...none. 
New Hampshire...none. 
Rhode Island...none. 
Marine...Small Craft Advisory for hazardous seas from 7 am this morning 
to 2 PM EDT Tuesday for anz235-237-250-254>256. 


&& 


$$ 
Synopsis...wtb/jwd 
near term...jwd 
short term...jwd 
long term...wtb 
aviation...wtb/jwd 
marine...wtb/jwd 



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