- Clothing
- Light layers work well; a jacket for the evening.
Tomorrow's Weather Forecast - Chicago
Tomorrow's weather in Chicago. high 31°C (88°F), low 18°C (64°F). Overcast.
Tomorrow’s Outlook
Tomorrow will be 6°C warmer than today. A warm, sunny day is expected, with rain chances staying low throughout. Humidity stays high near 71%, so it will feel muggier and stickier than the temperature alone suggests. A light breeze near 19 km/h is expected. Sunrise is at 6:27 AM and sunset at 7:05 PM, for about 12h 37m of daylight.
- Tomorrow
- 31°/ 18°
- Today25° / 16°
Tomorrow’s Hourly Weather Outlook
Morning6 AM – Noon22°
- Rain probability
- 1%
- Wind speed
- 17 km/h
AfternoonNoon – 6 PM30°
- Rain probability
- 3%
- Wind speed
- 19 km/h
Evening6 PM – Midn25°
- Rain probability
- 3%
- Wind speed
- 14 km/h
NightMidn – 6 AM18°
- Rain probability
- 0%
- Wind speed
- 9 km/h
24-Hour Rain & Temperature Forecast
Tomorrow12 Sep
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Planning Advice for Tomorrow
- Outdoor
- Good conditions for outdoor activities.
- Travel
- Standard travel conditions expected.
Sunrise & Sunset
Sunrise
Dawn 5:57 AMTotal Daylight
Full day forecastSolar noon 12:46 PM
Sunset
Dusk 7:35 PMvs today-3 min daylight
Sunrise shift1 min later
Sunset shift1 min earlier
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Chicago is forecast to reach a high of 31°C tomorrow, with an overnight low around 18°C. That's 9° above the long-term average high of 22°C for this time of year. It continues a recent pattern — 21 of the last 28 days with published data have run warmer than normal. Expect little chance of rain (3% probability) and a gentle breeze averaging 19 km/h. Air quality is currently good (AQI 31), with no notable outdoor health concerns.
Today vs Normal
25°C+3° above normal
The long-term average high for today is 22°C.
21 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air Quality
Good
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.