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CheckWeather USDowners Grove
Forecast confidence: High · models disagree by 0°F

Downers Grove weather

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Showers,much the same tomorrow

NWS, the American and the European model agree on a high near 83° in Downers Grove today. Tomorrow looks cloudy around 79°, with a 0% chance of rain.

83°71°
79°67°
79°62°
85°63°
82°71°
80°66°
Todaymodels agreeTomorrowsplit ±5°Mondaymodels agreeTuesdaymodels agreeWednesdaysplit ±14°Thursdaymodels agree
NWSNational Blend (NBM)
83°
Showers
Today 83°·Low 73°·Rain 26%
AmericanNOAA GFS
83°
Cloudy
Today 83°·Low 71°·Rain 26%
EuropeanECMWF
83°
Thunderstorm
Today 83°·Low 70°·Rain 54%

The weather map: all three models at once

NWS, American, European side by side around Downers Grove and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Showers
83° 71°
models agree
Tomorrow
Cloudy
79° 67°
±5°
Mon
Cloudy
79° 62°
models agree
Tue
Cloudy
85° 63°
models agree
Wed
Light drizzle
82° 71°
±14°
Thu
Partly cloudy
80° 66°
models agree
Fri
Cloudy
83° 61°
±8°
Sat
Light drizzle
85° 66°
±5°
Sun
Light rain
80° 66°
±6°
Mon
Heavy drizzle
72° 61°
±5°
Tue
Light drizzle
71° 57°
±12°
Wed
Cloudy
73° 53°
±7°
Thu
Cloudy
75° 57°
±10°
Fri
Partly cloudy
75° 60°
±6°

Downers Grove, IL is at its warmest in Jul (average highs near 82°F) and coldest in Jan (lows around 21°F), with roughly 42 in of precipitation across the year. Below, compare what NWS, American, European forecast for Downers Grove 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.

Downers Grove climate by month

average daytime high and overnight low across a typical year
Jan
33°
21°
Feb
44°
26°
Mar
49°
31°
Apr
60°
40°
May
72°
51°
Jun
81°
61°
Jul
82°
64°
Aug
81°
64°
Sep
77°
60°
Oct
64°
48°
Nov
50°
36°
Dec
40°
29°

Which forecast is most accurate in Downers Grove?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
93
/100rank #1
95±0.5°F97±1.0 mph8994% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
76
/100rank #2
84±1.6°F95±1.6 mph5374% 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Todaymodels agree83° to 83°±28%26% to 54% chance
Tomorrow±5°77° to 82°models agree0% to 0% chance
Mon±4°77° to 81°models agree0% to 0% chance
Tue±2°84° to 86°±3%1% to 4% chance
Wed±14°73° to 87°±26%33% to 59% 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 Downers Grove

today, local time
Sunrise
06:22
Sunset
19:18
Daylight
12h 56m

Common questions

What's the weather in Downers Grove today?
On this page we show what NWS, American, European each forecast for Downers Grove 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 Downers Grove today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Downers Grove 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 Downers Grove?
Over the last 30 days, the European model has been the most accurate for Downers Grove (CheckWeather Score 93/100), ahead of the American at 76. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Downers Grove?
July is typically the warmest month in Downers Grove, with average highs around 82°F.
How cold does Downers Grove get?
The coldest month in Downers Grove is January, when overnight lows average about 21°F.
How much rain does Downers Grove get?
Downers Grove sees roughly 42 in of precipitation a year, with July usually the wettest month.

Nearby

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