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CheckWeather USWest Allis
Forecast confidence: High · models disagree by 1°F

West Allis weather

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Light drizzle,rain likely tomorrow

NWS, the American and the European model agree on a high near 67° in West Allis today. Tomorrow looks heavy rain around 70°, with a 100% chance of rain.

67°60°
70°62°
66°60°
62°57°
60°53°
62°54°
Todaymodels agreeTomorrowmodels agreeSundaymodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaymodels agree
NWSNational Blend (NBM)
67°
Light drizzle
Today 67°·Low 60°·Rain 28%
AmericanNOAA GFS
67°
Light drizzle
Today 67°·Low 59°·Rain 28%
EuropeanECMWF
67°
Light drizzle
Today 67°·Low 61°·Rain 95%
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West Allis weather alerts and warnings

active National Weather Service watches, warnings and advisories

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West Allis weather in numbers

from 30 years of measured normals

West Allis swings 59°F across the year, from 80°F highs in July to 21°F lows in January, and July is usually the wettest month in a year that brings about 40 in of precipitation.

Warmest month
July
80°F average high
Coldest month
January
21°F average low
Wettest month
July
40 in a year
Below freezing
4 months
January, February, March and December
Comfortable
4 months
May, June, September and October
Residents
61,000
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The weather map: all three models at once

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

where the models agree, and where they split
Today
Light drizzle
67° 60°
models agree
Tomorrow
Heavy rain
70° 62°
models agree
Sun
Rain
66° 60°
models agree
Mon
Cloudy
62° 57°
models agree
Tue
Cloudy
60° 53°
models agree
Wed
Cloudy
62° 54°
models agree
Thu
Cloudy
63° 55°
models agree
Fri
Partly cloudy
65° 56°
models agree
Sat
Partly cloudy
68° 54°
±7°
Sun
Cloudy
70° 55°
±6°
Mon
Light drizzle
67° 53°
models agree
Tue
Drizzle
57° 50°
±13°
Wed
Cloudy
59° 48°
models agree
Thu
Cloudy
67° 47°
±5°

West Allis, Wisconsin (WI) is at its warmest in Jul (average highs near 80°F) and coldest in Jan (lows around 21°F), with roughly 40 in of precipitation across the year. Below, compare what NWS, American, European forecast for West Allis 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.

West Allis climate by month

average daytime high and overnight low across a typical year
Jan
32°
21°
Feb
41°
24°
Mar
44°
29°
Apr
57°
39°
May
67°
48°
Jun
77°
59°
Jul
80°
63°
Aug
79°
63°
Sep
75°
59°
Oct
63°
47°
Nov
48°
35°
Dec
38°
27°

Which forecast is most accurate in West Allis?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
93
/100rank #1
94±0.6°F96±1.1 mph8994% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
63
/100rank #2
77±2.3°F95±1.7 mph2458% 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°67° to 67°±67%28% to 95% chance
Tomorrow±4°68° to 72°±11%89% to 100% chance
Sun±3°64° to 67°±20%46% to 66% chance
Mon±3°60° to 63°±7%11% to 18% chance
Tue±4°59° to 62°±16%8% to 24% 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 West Allis

today, local time
Sunrise
06:35
Sunset
18:56
Daylight
12h 21m

Common questions

What's the weather in West Allis today?
On this page we show what NWS, American, European each forecast for West Allis 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 West Allis today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for West Allis 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 West Allis?
Over the last 30 days, the European model has been the most accurate for West Allis (CheckWeather Score 93/100), ahead of the American at 63. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in West Allis?
July is typically the warmest month in West Allis, with average highs around 80°F.
How cold does West Allis get?
The coldest month in West Allis is January, when overnight lows average about 21°F.
How much rain does West Allis get?
West Allis sees roughly 40 in of precipitation a year, with July usually the wettest month.

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