Weather Alert
Cornell Weather Warning NWS WEATHER ALERT FOR THE CORNELL, IL AREA - Issued: 301 PM CDT Sat Sep 5 2026 Cornell Weather Warning

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Cornell, IL Weather Forecast

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Cornell, IL Weather Forecast

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Cornell IL weather - Partly Cloudy - 90°F
Partly Cloudy
90°F
Updated 4:20 pm
Feels Like 96°F
Humidity 63%
Wind N 7 mph
Barometer  29.93 in
Dew Point 76°F
Cornell IL weather - Partly Cloudy - 32°C
Partly Cloudy
32°C
Updated 4:20 pm
Feels Like 36°C
Humidity 63%
Wind N 11 km/h
Barometer  101.4 kPa
Dew Point 24°C
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Cornell Weather Forecast

THIS AFTERNOON TONIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT
Cornell, IL Weather - This Afternoon Partly Cloudy Cornell, IL Weather - Tonight Partly Cloudy Cornell, IL Weather - Sunday Mostly Sunny Cornell, IL Weather - Sunday Night Partly Cloudy Cornell, IL Weather - Labor Day Mostly Sunny Cornell, IL Weather - Monday Night Partly Cloudy Cornell, IL Weather - Tuesday Partly Cloudy Cornell, IL Weather - Tuesday Night Partly Cloudy Cornell, IL Weather - Wednesday Partly Cloudy Cornell, IL Weather - Wednesday Night Chance Of Showers Cornell, IL Weather - Thursday Partly Cloudy Cornell, IL Weather - Thursday Night Partly Cloudy
Partly Cloudy Partly Cloudy Mostly Sunny Partly Cloudy Mostly Sunny Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Chance of Showers Partly Cloudy Partly Cloudy
Hi: 91°FHi: 33°C
 Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
 Lo: 60°FLo: 16°C Hi: 81°FHi: 27°C
 Lo: 61°FLo: 16°C Hi: 91°FHi: 33°C
 Lo: 71°FLo: 22°C Hi: 91°FHi: 33°C
 Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
 Lo: 61°FLo: 16°C
POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 1236 PM CDT Sat Sep 05 2026 Cornell, IL Weather - WeatherWorld.com

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Issued: 137 PM CDT Sat Sep 5 2026

Key Messages

  • Moderate to high swim risk expected through early Sunday during the final weekend of beach season.
  • Relatively cooler Sunday and Monday, although remaining seasonably warm.

Discussion

... Issued at 137 PM CDT Sat Sep 5 2026

After an unseasonably hot and humid stretch to start September, cooler conditions are beginning to filter over the area from north to south today. Moisture pooling along a cold front draped across the southern CWA combined with temps in the lower 90s south of the fron...