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Forecast confidence: High · models disagree by 1°F

Green Bay weather

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Light rain,rain likely tomorrow

NWS, the American and the European model agree on a high near 64° in Green Bay today. Tomorrow looks rain around 63°, with a 100% chance of rain.

64°56°
63°58°
64°55°
60°52°
61°49°
64°49°
Todaymodels agreeTomorrowmodels agreeSundaymodels agreeMondaymodels agreeTuesdaysplit ±5°Wednesdaymodels agree
NWSNational Blend (NBM)
64°
Light rain
Today 64°·Low 58°·Rain 47%
AmericanNOAA GFS
64°
Light drizzle
Today 64°·Low 55°·Rain 47%
EuropeanECMWF
65°
Drizzle
Today 65°·Low 56°·Rain 98%
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Green Bay weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Green Bay weather in numbers

from 30 years of measured normals

Green Bay swings 62°F across the year, from 81°F highs in July to 19°F lows in January, and June is usually the wettest month in a year that brings about 33 in of precipitation.

Warmest month
July
81°F average high
Coldest month
January
19°F average low
Wettest month
June
33 in a year
Below freezing
4 months
January, February, March and December
Comfortable
3 months
May, September and October
Residents
105,000
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The weather map: all three models at once

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

where the models agree, and where they split
Today
Light rain
64° 56°
models agree
Tomorrow
Rain
63° 58°
models agree
Sun
Light drizzle
64° 55°
models agree
Mon
Cloudy
60° 52°
models agree
Tue
Cloudy
61° 49°
±5°
Wed
Mostly clear
64° 49°
models agree
Thu
Cloudy
64° 51°
models agree
Fri
Cloudy
67° 52°
±7°
Sat
Cloudy
69° 51°
±5°
Sun
Cloudy
69° 53°
±6°
Mon
Light drizzle
65° 50°
±7°
Tue
Cloudy
57° 49°
±7°
Wed
Cloudy
60° 46°
models agree
Thu
Cloudy
65° 48°
models agree

Green Bay, Wisconsin (WI) is at its warmest in Jul (average highs near 81°F) and coldest in Jan (lows around 19°F), with roughly 33 in of precipitation across the year. Below, compare what NWS, American, European forecast for Green Bay 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.

Green Bay climate by month

average daytime high and overnight low across a typical year
Jan
30°
19°
Feb
38°
20°
Mar
42°
25°
Apr
56°
37°
May
69°
48°
Jun
78°
59°
Jul
81°
62°
Aug
79°
62°
Sep
76°
57°
Oct
62°
46°
Nov
46°
33°
Dec
36°
25°

Which forecast is most accurate in Green Bay?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
90
/100rank #1
91±0.9°F98±0.7 mph8290% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
81
/100rank #2
83±1.7°F92±2.4 mph7184% 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°64° to 65°±51%47% to 98% chance
Tomorrow±2°61° to 64°±50%50% to 100% chance
Sun±3°63° to 66°±1%11% to 12% chance
Mon±1°60° to 61°±3%1% to 4% chance
Tue±5°58° to 63°±6%2% to 8% 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 Green Bay

today, local time
Sunrise
06:34
Sunset
18:56
Daylight
12h 22m

Common questions

What's the weather in Green Bay today?
On this page we show what NWS, American, European each forecast for Green Bay 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 Green Bay today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Green Bay 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 Green Bay?
Over the last 30 days, the European model has been the most accurate for Green Bay (CheckWeather Score 90/100), ahead of the American at 81. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Green Bay?
July is typically the warmest month in Green Bay, with average highs around 81°F.
How cold does Green Bay get?
The coldest month in Green Bay is January, when overnight lows average about 19°F.
How much rain does Green Bay get?
Green Bay sees roughly 33 in of precipitation a year, with June usually the wettest month.

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