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CheckWeather USNorwalk
Forecast confidence: High · models disagree by 3°F

Norwalk weather

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Mostly clear,rain likely tomorrow

NWS, the American and the European model agree on a high near 78° in Norwalk today. Tomorrow looks rain around 72°, with a 75% chance of rain.

78°64°
72°61°
76°57°
80°61°
80°66°
81°69°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaymodels agreeThursdaysplit ±7°
NWSNational Blend (NBM)
66°
Light drizzle
Feels 69° · Wind 3 mph · Humidity 86%
AmericanNOAA GFS
66°
Clear
Feels 67° · Wind 3 mph · Humidity 74%
EuropeanECMWF
64°
Clear
Feels 64° · Wind 6 mph · Humidity 79%

Latest for Norwalk: NWS (National Blend (NBM)): 66° Light drizzle · American (NOAA GFS): 66° Clear · European (ECMWF): 64° Clear.

The weather map: all three models at once

NWS, American, European side by side around Norwalk and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Mostly clear
78° 64°
models agree
Tomorrow
Rain
72° 61°
models agree
Mon
Mostly clear
76° 57°
models agree
Tue
Cloudy
80° 61°
models agree
Wed
Cloudy
80° 66°
models agree
Thu
Light drizzle
81° 69°
±7°
Fri
Cloudy
77° 64°
±9°
Sat
Mostly clear
75° 61°
models agree
Sun
Partly cloudy
80° 65°
±6°
Mon
Light rain
82° 68°
±12°
Tue
Light rain
74° 64°
±11°
Wed
Light drizzle
75° 61°
±8°
Thu
Cloudy
71° 59°
±7°
Fri
Light drizzle
70° 60°
±9°

Norwalk, 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 Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
81
/100rank #1
84±1.6°F92±2.5 mph7184% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
69
/100rank #2
88±1.2°F95±1.5 mph2961% 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±3°77° to 79°±35%6% to 41% chance
Tomorrow±2°71° to 73°±50%25% to 75% chance
Mon±2°76° to 77°models agree0% to 0% chance
Tue±3°79° to 81°±8%0% to 8% chance
Wed±1°80° to 80°±2%8% to 10% 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
06:24
Sunset
19:20
Daylight
12h 56m

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 81/100), ahead of the American at 69. 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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