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Thornton, IL Weather Forecast

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Thornton, IL Weather Forecast

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Thornton IL weather - Clear - 56°F
Clear
56°F
Updated 3:09 am
Feels Like 58°F
Humidity 100%
Wind N 0 mph
Barometer  30.04 in
Dew Point 56°F
Thornton IL weather - Clear - 13°C
Clear
13°C
Updated 3:09 am
Feels Like 15°C
Humidity 100%
Wind N 0 km/h
Barometer  101.7 kPa
Dew Point 14°C
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Thornton Weather Forecast

REST OF TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY
Thornton, IL Weather - Rest Of Tonight Mostly Clear Thornton, IL Weather - Friday Mostly Sunny Thornton, IL Weather - Friday Night Partly Cloudy Thornton, IL Weather - Saturday Partly Cloudy Thornton, IL Weather - Saturday Night Partly Cloudy Thornton, IL Weather - Sunday Chance Of Showers Thornton, IL Weather - Sunday Night Chance Of T-Storm Thornton, IL Weather - Monday Chance Of T-Storm Thornton, IL Weather - Monday Night Chance Of Showers Thornton, IL Weather - Tuesday Chance Of T-Storm Thornton, IL Weather - Tuesday Night Showers Likely Thornton, IL Weather - Wednesday Showers
Mostly Clear Mostly Sunny Partly Cloudy Partly Cloudy Partly Cloudy Chance of Showers Chance of T-Storm Chance of T-Storm Chance of Showers Chance of T-Storm Showers Likely Showers
Lo: 59°FLo: 15°C Hi: 81°FHi: 27°C
 Lo: 65°FLo: 18°C Hi: 89°FHi: 32°C
 Lo: 65°FLo: 18°C Hi: 80°FHi: 27°C
 Lo: 61°FLo: 16°C Hi: 81°FHi: 27°C
 Lo: 70°FLo: 21°C Hi: 85°FHi: 29°C
 Lo: 61°FLo: 16°C Hi: 79°FHi: 26°C
POP: 20% POP: 30% POP: 20% POP: 30% POP: 50% POP: 60% POP: 60%
POP = Probability of Precipitation.
Weather Outlook Updated: 121 AM CDT Fri Sep 11 2026 Thornton, IL Weather - WeatherWorld.com

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Thornton Forecast Discussion

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Issued: 1204 AM CDT Fri Sep 11 2026

Key Messages

  • Quieter conditions with near to slightly above normal temperatures through the weekend.

Discussion

... Issued at 114 PM CDT Thu Sep 10 2026

Through Sunday Night:

Ongoing rain showers are being observed south of the Kankakee River Valley this afternoon ahead of a mid level wave that is passing over the area. There has been an increase in shower coverage over the area, being located under the right entrance region of a 300 mb jet. However, lapse rates are fairly poor with the better well o...