Chicago weather
Loading live data…Drizzle,rain likely tomorrow
NWS, the American and the European model agree on a high near 70° in Chicago today. Tomorrow looks rain around 74°, with a 98% chance of rain.
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active National Weather Service watches, warnings and advisoriesChecking the National Weather Service for active alerts covering Chicago…
Chicago weather in numbers
from 30 years of measured normalsChicago swings 57°F across the year, from 80°F highs in July to 23°F lows in January, and July is usually the wettest month in a year that brings about 45 in of precipitation.
The weather map: all three models at once
NWS, American, European side by side around Chicago and nearby towns.Live rain radar →Chicago in 3D: the weather on the streets, hour by hour
Rain, sun and real shadows drawn on a 3D map of Chicago, 48 hours ahead. Drag the timeline, pick what you are doing or where you are going, and read the verdict for that hour.Full screen ↗What are you doing?
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Chicago hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
Chicago 10-day forecast, out to 14 days
where the models agree, and where they splitChicago, Illinois (IL). Below we compare what NWS, American, European forecast for Chicago right now and flag exactly where they disagree, then break down Chicago's weather month by month and which forecast model has been most accurate here.
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.
Chicago weather by month
what to expect in Chicago through the yearHere is Chicago's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Chicago by season.
What Chicago's weather is like through the year
Chicago runs from warm summers, with July highs near 80°F, to cold winters, when January lows sit around 23°F (a swing of about 57°F across the year). July is usually the wettest month, and Chicago sees roughly 45 inches of precipitation annually. Overnight lows stay below freezing across 3 months (January, February and December), so Chicago sees regular winter snowfall.
Best time to visit Chicago
The most comfortable time to visit Chicago is usually May, September and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest July rain is behind you.
Which forecast is most accurate in Chicago?
CheckWeather Score, graded against the weather that actually happened
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.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Chicago, scoring 89/100 on our CheckWeather Score, ahead of the American at 68. See the full US accuracy scoreboard for exactly how every model is tested.
What do you think of the forecasts?
your vote countsThe 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.
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 separatelyThe 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.