CheckWeather US›Green Bay
Green Bay weather
Loading live data…The weather map: all three models at once
NWS, American, European side by side around Green Bay and nearby towns.Live rain radar →Loading the three model maps…
Next 14 hours
consensus of the three models7-day forecast
where the models agree, and where they splitGreen Bay, 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.
Green Bay climate by month
average daytime high and overnight low across a typical yearJan
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 the US?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 40 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.
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?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Green Bay forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Green Bay?
Jul 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 Jan, 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 Jun usually the wettest month.
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.