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CheckWeather USWaukegan
Forecast confidence: High · models disagree by 2°F

Waukegan weather

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Light drizzle,rain likely tomorrow

NWS, the American and the European model agree on a high near 69° in Waukegan today. Tomorrow looks heavy rain around 72°, with a 92% chance of rain.

69°63°
72°63°
68°62°
63°58°
61°55°
61°55°
Todaymodels agreeTomorrowsplit ±5°Sundaymodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaymodels agree
NWSNational Blend (NBM)
68°
Light drizzle
Today 68°·Low 63°·Rain 26%
AmericanNOAA GFS
70°
Cloudy
Today 70°·Low 62°·Rain 26%
EuropeanECMWF
70°
Drizzle
Today 70°·Low 63°·Rain 65%
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Waukegan weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Waukegan weather in numbers

from 30 years of measured normals

Waukegan swings 57°F across the year, from 79°F highs in July to 22°F lows in January, and July is usually the wettest month in a year that brings about 37 in of precipitation.

Warmest month
July
79°F average high
Coldest month
January
22°F average low
Wettest month
July
37 in a year
Below freezing
4 months
January, February, March and December
Comfortable
4 months
May, June, September and October
Residents
88,000
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The weather map: all three models at once

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

where the models agree, and where they split
Today
Light drizzle
69° 63°
models agree
Tomorrow
Heavy rain
72° 63°
±5°
Sun
Rain
68° 62°
models agree
Mon
Light drizzle
63° 58°
models agree
Tue
Cloudy
61° 55°
models agree
Wed
Cloudy
61° 55°
models agree
Thu
Partly cloudy
63° 56°
models agree
Fri
Light drizzle
65° 57°
models agree
Sat
Partly cloudy
68° 56°
±6°
Sun
Cloudy
70° 55°
±6°
Mon
Light drizzle
67° 53°
models agree
Tue
Light rain
57° 51°
±17°
Wed
Cloudy
60° 48°
models agree
Thu
Partly cloudy
67° 47°
models agree

Waukegan, Illinois (IL) is at its warmest in Jul (average highs near 79°F) and coldest in Jan (lows around 22°F), with roughly 37 in of precipitation across the year. Below, compare what NWS, American, European forecast for Waukegan 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.

Waukegan climate by month

average daytime high and overnight low across a typical year
Jan
33°
22°
Feb
42°
26°
Mar
45°
31°
Apr
57°
41°
May
67°
50°
Jun
77°
60°
Jul
79°
65°
Aug
79°
65°
Sep
74°
61°
Oct
63°
49°
Nov
49°
37°
Dec
39°
29°

Which forecast is most accurate in Waukegan?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
83
/100rank #1
87±1.3°F95±1.7 mph7184% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
55
/100rank #2
79±2.1°F94±1.7 mph045% 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±2°68° to 70°±39%26% to 65% chance
Tomorrow±5°70° to 75°±18%74% to 92% chance
Sun±2°67° to 69°±37%50% to 87% chance
Mon±2°62° to 64°±9%18% to 27% chance
Tue±3°60° to 63°±29%10% to 39% 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 Waukegan

today, local time
Sunrise
06:34
Sunset
18:55
Daylight
12h 21m

Common questions

What's the weather in Waukegan today?
On this page we show what NWS, American, European each forecast for Waukegan 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 Waukegan today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Waukegan 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 Waukegan?
Over the last 30 days, the European model has been the most accurate for Waukegan (CheckWeather Score 83/100), ahead of the American at 55. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Waukegan?
July is typically the warmest month in Waukegan, with average highs around 79°F.
How cold does Waukegan get?
The coldest month in Waukegan is January, when overnight lows average about 22°F.
How much rain does Waukegan get?
Waukegan sees roughly 37 in of precipitation a year, with July usually the wettest month.

Nearby

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