NWS, American, European side by side around Waukesha and nearby towns.Live rain radar →
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Next 14 hours
consensus of the three models
7-day forecast
where the models agree, and where they split
Waukesha, WI is at its warmest in Jul (average highs near 81°F) and coldest in Jan (lows around 20°F), with roughly 41 in of precipitation across the year. Below, compare what NWS, American, European forecast for Waukesha right now, and see exactly where they disagree.
Waukesha climate by month
average daytime high and overnight low across a typical year
Jan
31°
20°
Feb
41°
23°
Mar
45°
29°
Apr
57°
39°
May
70°
49°
Jun
78°
59°
Jul
81°
63°
Aug
79°
62°
Sep
75°
58°
Oct
62°
47°
Nov
47°
35°
Dec
38°
26°
Common questions
What's the weather in Waukesha today?
On this page we show what NWS, American, European each forecast for Waukesha 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 Waukesha today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Waukesha 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 Waukesha?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Waukesha 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 Waukesha?
Jul is typically the warmest month in Waukesha, with average highs around 81°F.
How cold does Waukesha get?
The coldest month in Waukesha is Jan, when overnight lows average about 20°F.
How much rain does Waukesha get?
Waukesha sees roughly 41 in of precipitation a year, with Jul 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.