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Windsor weather

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NWSNational Blend (NBM)
45°
Mainly clear
Feels 42° · Wind 1 mph · Humidity 78%
AmericanNOAA GFS
40°
Overcast
Feels 34° · Wind 3 mph · Humidity 68%
EuropeanECMWF
43°
Overcast
Feels 39° · Wind 2 mph · Humidity 69%

Latest for Windsor: NWS (National Blend (NBM)): 45° Mainly clear · American (NOAA GFS): 40° Overcast · European (ECMWF): 43° Overcast.

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Windsor weather alerts and warnings

active National Weather Service watches, warnings and advisories

Checking the National Weather Service for active alerts covering Windsor…

Windsor weather in numbers

measured normals and 10 years of recorded weather

Windsor swings 63°F across the year, from 84°F highs in July to 21°F lows in January, and October is usually the wettest month in a year that brings about 51 in of precipitation. Over 10 years of recorded weather it averages 96 days a year at 77°F or above, 33 of them at 86°F or above, 107 frost nights, and rain on 128 days.

Warmest month
July
84°F average high
Coldest month
January
21°F average low
Wettest month
October
51 in a year
Comfortable
2 months
May and September
Residents
29,000
share this forecast
Most accurate here
European
96/100 CheckWeather Score
Warm days
96 days
a year at 77°F or above
Frost nights
107 nights
a year below 32°F
Rain days
128 days
a year with 0.04 in or more

Day counts are from the ERA5 reanalysis for Windsor’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

NWS, American, European side by side around Windsor and nearby towns.Live rain radar →
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Windsor hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Windsor 10-day forecast, out to 14 days

where the models agree, and where they split

Windsor, Connecticut (CT) is at its warmest in Jul (average highs near 84°F) and coldest in Jan (lows around 21°F), with roughly 51 in of precipitation across the year. Below, compare what NWS, American, European forecast for Windsor right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Windsor climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
35°
21°
Feb
40°
21°
Mar
47°
29°
Apr
59°
37°
May
71°
48°
Jun
80°
59°
Jul
84°
66°
Aug
82°
65°
Sep
74°
56°
Oct
63°
44°
Nov
51°
35°
Dec
40°
26°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around Windsor has changed since 1995

Windsor sits in the same roughly 50 km square of NASA's reanalysis as Springfield. That square ran 1.4°F warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the Springfield page.

Which forecast is most accurate in Windsor?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
96
/100rank #1
96±0.4°F98±0.6 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
90
/100rank #2
87±1.3°F96±1.3 mph8994% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Windsor today?
On this page we show what NWS, American, European each forecast for Windsor today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Windsor today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Windsor and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Windsor?
Over the last 30 days, the European model has been the most accurate for Windsor (CheckWeather Score 96/100), ahead of the American at 90. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Windsor?
July is typically the warmest month in Windsor, with average highs around 84°F.
How cold does Windsor get?
The coldest month in Windsor is January, when overnight lows average about 21°F.
How much rain does Windsor get?
Windsor sees roughly 51 in of precipitation a year, with October usually the wettest month.

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