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The weather in
Chicago
See today's weather and the 14-day forecast for Chicago. Search another place to look ahead instantly.
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Chicago, Illinois
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next 24 hours
Rain forecast for Chicago
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looking ahead in Chicago
The next 14 days
Chicago weather
Weather in Chicago
See the forecast for Chicago in one clear overview. From temperature and wind to the chance of rain: plan a walk along the lakefront or a day exploring downtown with up-to-date information.
Today and the next 14 days
The forecast for Chicago is updated daily. Check the temperature, wind and chance of rain hour by hour, and use the 14-day outlook to plan ahead and spot which days look best for being outside.
Practical weather notes for Chicago
Chicago sits on the shore of Lake Michigan, which noticeably cools the lakefront on hot summer days and can add a sharper wind chill in winter — part of why it has earned the nickname "the Windy City". Weather can shift quickly here as fronts move through the open Midwest.
Seasons in Chicago
Winters are cold with regular snow and biting lake winds, while summers can turn hot and humid. Spring and autumn are typically brief, changeable transitions between the two extremes.
Frequently asked questions
How often is the forecast updated?
The live weather data refreshes several times a day, so you're always seeing the latest forecast for Chicago.
Is the 14-day forecast reliable?
The first few days are usually the most accurate. Further ahead, the forecast mainly shows a trend rather than the exact weather at a specific hour.
What should I check before heading outside?
Look at the combination of rain, wind and feels-like temperature. A short trip can handle a passing shower, but a longer walk or bike ride benefits from a more stable stretch of weather.
climate
Climate in Chicago by month
Planning a trip to Chicago? Below are the average daily high and low temperatures and the rainfall for each month. For the coming days, see the forecast above.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| January | 0.0°C (32°F) | -6.6°C (20°F) | 65 mm (2.6 in) |
| February | 2.0°C (36°F) | -6.5°C (20°F) | 60 mm (2.4 in) |
| March | 7.0°C (45°F) | -0.7°C (31°F) | 88 mm (3.5 in) |
| April | 12.3°C (54°F) | 4.0°C (39°F) | 101 mm (4.0 in) |
| May | 18.6°C (65°F) | 10.1°C (50°F) | 133 mm (5.2 in) |
| June | 24.8°C (77°F) | 16.2°C (61°F) | 111 mm (4.4 in) |
| July | 26.6°C (80°F) | 19.2°C (67°F) | 153 mm (6.0 in) |
| August | 26.4°C (80°F) | 19.0°C (66°F) | 107 mm (4.2 in) |
| September | 23.7°C (75°F) | 16.3°C (61°F) | 96 mm (3.8 in) |
| October | 16.5°C (62°F) | 9.2°C (49°F) | 123 mm (4.8 in) |
| November | 9.0°C (48°F) | 2.1°C (36°F) | 63 mm (2.5 in) |
| December | 3.9°C (39°F) | -2.6°C (27°F) | 66 mm (2.6 in) |
Source: ERA5 reanalysis via Open-Meteo, 2015-2024. Model averages for a grid cell, not official station records.
Best time to visit Chicago
The warmest month in Chicago is July, with an average high of 26.6°C (80°F). The coolest is January, at 0.0°C (32°F). The wettest month is July, with about 153 mm (6.0 in) of rain. Highs of 25°C (77°F) or more are typical from July and August. For sightseeing and walking, with highs between 18 and 27°C (64 to 81°F), May to September are the most comfortable.
Climate FAQ
What is the warmest month in Chicago?
July, with an average high of 26.6°C (80°F) and an average low of 19.2°C (67°F) (averages for 2015-2024).
What is the wettest month in Chicago?
July, with about 153 mm (6.0 in) of rain. The driest month is February.
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