Downen, IL Weather Forecast

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Downen, IL Weather Forecast

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Downen IL weather  - Clear - 79°F
Clear
79°F
Updated 10:52 pm
Feels Like 87°F
Humidity 82%
Wind E 3 mph
Barometer  30.13 in
Dew Point 73°F
Downen IL weather  - Clear - 26°C
Clear
26°C
Updated 10:52 pm
Feels Like 31°C
Humidity 82%
Wind E 5 km/h
Barometer  102 kPa
Dew Point 23°C

Downen Weather Forecast

TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY SATURDAY SATURDAY NIGHT SUNDAY MONDAY MONDAY NIGHT TUESDAY
Downen, IL Weather - Tonight Mostly Clear Downen, IL Weather - Wednesday Mostly Sunny Downen, IL Weather - Wednesday Night Partly Cloudy Downen, IL Weather - Thursday Sunny Downen, IL Weather - Thursday Night Partly Cloudy Downen, IL Weather - Friday Mostly Clear Downen, IL Weather - Saturday Mostly Clear Downen, IL Weather - Saturday Night Partly Cloudy Downen, IL Weather - Sunday Partly Cloudy Downen, IL Weather - Monday Chance Of Showers Downen, IL Weather - Monday Night Chance Of Showers Downen, IL Weather - Tuesday Mostly Sunny
Mostly Clear Mostly Sunny Partly Cloudy Sunny Partly Cloudy Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Chance of Showers Chance of Showers Mostly Sunny
Lo: 75°FLo: 24°C Hi: 99°FHi: 37°C
Lo: 71°FLo: 22°C Hi: 99°FHi: 37°C
Lo: 71°FLo: 22°C Hi: 95°FHi: 35°C
Lo: 71°FLo: 22°C
Hi: 95°FHi: 35°C
Lo: 71°FLo: 22°C
Hi: 95°FHi: 35°C
Lo: 71°FLo: 22°C
Hi: 95°FHi: 35°C
Lo: 71°FLo: 22°C
Hi: 89°FHi: 32°C
Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
POP: 30% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 547 PM CDT Tue Sep 15 2026 Downen, IL Weather - WeatherWorld.com

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Downen Forecast Discussion

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Issued: 628 PM CDT Tue Sep 15 2026

Key Messages

  • A headlining late season heat wave with high temperatures near or at record levels continues thru the rest of the week.
  • A cold front`s late weekend passage will bring a chance of rain and cooler and less humid conditions early next week.

Discussion

... Issued at 1202 PM CDT Tue Sep 15 2026

The blast of furnace heat shows no signs of abating the remainder of the week. The upper (H5) high holds strong in the upper 590s DM while gradually retrograding across the FA. H8 temps actually incre...