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Forecast confidence: High · models disagree by 1°F

Norwalk weather

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Drizzle,cooler tomorrow

NWS, the American and the European model agree on a high near 78° in Norwalk today. Tomorrow looks cloudy around 67°, with a 0% chance of rain.

78°64°
67°55°
68°58°
68°58°
62°53°
64°51°
Todaymodels agreeTomorrowmodels agreeSundaymodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaymodels agree
NWSNational Blend (NBM)
79°
Drizzle
Today 79°·Low 65°·Rain 17%
AmericanNOAA GFS
79°
Cloudy
Today 79°·Low 64°·Rain 17%
EuropeanECMWF
78°
Light drizzle
Today 78°·Low 65°·Rain 44%
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Norwalk weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Norwalk weather in numbers

from 30 years of measured normals

Norwalk swings 55°F across the year, from 84°F highs in July to 29°F lows in February, and March is usually the wettest month in a year that brings about 54 in of precipitation.

Warmest month
July
84°F average high
Coldest month
February
29°F average low
Wettest month
March
54 in a year
Below freezing
2 months
January and February
Comfortable
4 months
April, May, June and September
Residents
88,000
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The weather map: all three models at once

NWS, American, European side by side around Norwalk and nearby towns.Live rain radar →
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Norwalk 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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Norwalk 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Drizzle
78° 64°
models agree
Tomorrow
Cloudy
67° 55°
models agree
Sun
Light rain
68° 58°
models agree
Mon
Light rain
68° 58°
models agree
Tue
Light drizzle
62° 53°
models agree
Wed
Light drizzle
64° 51°
models agree
Thu
Light rain
63° 52°
±7°
Fri
Drizzle
63° 52°
models agree
Sat
Light drizzle
66° 54°
±12°
Sun
Partly cloudy
68° 55°
±10°
Mon
Light drizzle
69° 57°
±7°
Tue
Light drizzle
71° 59°
models agree
Wed
Heavy drizzle
77° 60°
models agree
Thu
Rain
68° 55°
±6°

Norwalk, Connecticut (CT) is at its warmest in Jul (average highs near 84°F) and coldest in Feb (lows around 29°F), with roughly 54 in of precipitation across the year. Below, compare what NWS, American, European forecast for Norwalk 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.

Norwalk climate by month

average daytime high and overnight low across a typical year
Jan
43°
31°
Feb
44°
29°
Mar
50°
35°
Apr
60°
43°
May
69°
52°
Jun
78°
61°
Jul
84°
68°
Aug
80°
65°
Sep
74°
60°
Oct
66°
51°
Nov
54°
39°
Dec
45°
33°

Which forecast is most accurate in Norwalk?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
84
/100rank #1
86±1.4°F93±2.1 mph7687% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
71
/100rank #2
87±1.3°F94±1.8 mph3665% 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±1°78° to 79°±27%17% to 44% chance
Tomorrow±1°67° to 68°models agree0% to 0% chance
Sun±2°67° to 70°±9%88% to 97% chance
Mon±3°67° to 69°±6%71% to 77% chance
Tue±3°60° to 63°±16%6% to 22% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Norwalk

today, local time
Sunrise
06:37
Sunset
18:57
Daylight
12h 20m

Common questions

What's the weather in Norwalk today?
On this page we show what NWS, American, European each forecast for Norwalk 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 Norwalk today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Norwalk 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 Norwalk?
Over the last 30 days, the European model has been the most accurate for Norwalk (CheckWeather Score 84/100), ahead of the American at 71. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Norwalk?
July is typically the warmest month in Norwalk, with average highs around 84°F.
How cold does Norwalk get?
The coldest month in Norwalk is February, when overnight lows average about 29°F.
How much rain does Norwalk get?
Norwalk sees roughly 54 in of precipitation a year, with March usually the wettest month.

Nearby

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