Year-round weather and climate in Chicago, United States
Average temperatures in Chicago run from an average low of -5°C23°F in January up to an average high of 27°C81°F in July. February is the driest month at 5 rainy days; January the wettest at 14. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 2.7M
- Currency
- USD
- Language
- English
- Time zone
- Chicago
Best time to visit
The most pleasant weather falls in June, July, and August, offering a perfect balance of comfortable temperatures and clear skies.
Rain character
Tropical Downpours: Expect intense bursts of rain during wetter months. Pack quick-drying footwear and a compact umbrella.
Day-to-night swing
Evening Chill: Temperatures drop by a noticeable 10°C18°F when the sun goes down. A light sweater or jacket is usually all you need for evening plans.
Seasonality Profile
True Four Seasons: Dramatic contrasts. Freezing winters, transitional shoulders, and blazing summers.
Evening vibe
Seasonal Terraces: During the more temperate months, the city opens up with lively outdoor terraces. For the rest of the year, expect to dine indoors.
Sightseeing stamina
All-Day Strolling: Weather is generally forgiving for long walking days. Comfortable sneakers are your most important packing item.
Average temperatures, sunshine, and rainfall
Average monthly weather in Chicago, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Feb is typically driest at 5 days (53mm); Jan the wettest at 14 days (87mm).
| Month | Average high | Average low | Sunshine hours | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 1°C / 34°F | -5°C / 23°F | 4h | 14 | 87mm |
| Feb | 6°C / 44°F | -3°C / 27°F | 9h | 5 | 53mm |
| Mar | 8°C / 47°F | 0°C / 32°F | 8h | 13 | 102mm |
| Apr | 15°C / 59°F | 5°C / 41°F | 9h | 14 | 91mm |
| May | 20°C / 68°F | 10°C / 51°F | 11h | 11 | 73mm |
| Jun | 26°C / 79°F | 17°C / 62°F | 12h | 9 | 67mm |
| Jul | 27°C / 80°F | 19°C / 65°F | 12h | 12 | 240mm |
| Aug | 27°C / 80°F | 19°C / 65°F | 12h | 8 | 91mm |
| Sep | 24°C / 75°F | 16°C / 61°F | 9h | 9 | 119mm |
| Oct | 18°C / 64°F | 9°C / 49°F | 8h | 12 | 90mm |
| Nov | 10°C / 50°F | 3°C / 38°F | 6h | 8 | 65mm |
| Dec | 5°C / 40°F | -1°C / 30°F | 4h | 11 | 61mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Chicago?
The most sunshine in Chicago comes around June, averaging 12 hours a month. If you're heading there then, pack your sunglasses and sunscreen.
What clothes should I pack for Chicago?
Your packing list depends entirely on when you travel. Temperatures in Chicago swing from an average low of -5°C23°F in January up to 27°C81°F in July. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Chicago?
Chicago gets rain on about 126 days out of the year. The wettest month is January. If you're traveling during the rainy season, you'll definitely want to pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Chicago with Packola.
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