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CheckWeather USOak Forest

Oak Forest weather

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Oak Forest weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Oak Forest weather in numbers

from 30 years of measured normals

Oak Forest swings 59°F across the year, from 82°F highs in July to 23°F lows in January, and July is usually the wettest month in a year that brings about 43 in of precipitation.

Warmest month
July
82°F average high
Coldest month
January
23°F average low
Wettest month
July
43 in a year
Below freezing
3 months
January, February and December
Comfortable
4 months
April, May, September and October
Residents
28,000
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The weather map: all three models at once

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

where the models agree, and where they split

Oak Forest, Illinois (IL) is at its warmest in Jul (average highs near 82°F) and coldest in Jan (lows around 23°F), with roughly 43 in of precipitation across the year. Below, compare what NWS, American, European forecast for Oak Forest 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.

Oak Forest climate by month

average daytime high and overnight low across a typical year
Jan
34°
23°
Feb
45°
27°
Mar
49°
32°
Apr
60°
40°
May
72°
51°
Jun
81°
61°
Jul
82°
64°
Aug
81°
64°
Sep
76°
59°
Oct
65°
48°
Nov
50°
37°
Dec
41°
29°

Which forecast is most accurate in Oak Forest?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
96
/100rank #1
95±0.5°F98±0.5 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
65
/100rank #2
74±2.6°F93±2.2 mph3665% 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.

Common questions

What's the weather in Oak Forest today?
On this page we show what NWS, American, European each forecast for Oak Forest 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 Oak Forest today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Oak Forest 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 Oak Forest?
Over the last 30 days, the European model has been the most accurate for Oak Forest (CheckWeather Score 96/100), ahead of the American at 65. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Oak Forest?
July is typically the warmest month in Oak Forest, with average highs around 82°F.
How cold does Oak Forest get?
The coldest month in Oak Forest is January, when overnight lows average about 23°F.
How much rain does Oak Forest get?
Oak Forest sees roughly 43 in of precipitation a year, with July usually the wettest month.

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