Dewey, IL Weather Forecast

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Dewey, IL Weather Forecast

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Dewey IL weather  - Clear - 59°F
Clear
59°F
Updated 6:07 am
Feels Like 57°F
Humidity 91%
Wind NE 5 mph
Barometer  30.14 in
Dew Point 57°F
Dewey IL weather  - Clear - 15°C
Clear
15°C
Updated 6:07 am
Feels Like 14°C
Humidity 91%
Wind NE 8 km/h
Barometer  102.1 kPa
Dew Point 14°C

Dewey Weather Forecast

TODAY TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT
Dewey, IL Weather - Today Sunny Dewey, IL Weather - Tonight Partly Cloudy Dewey, IL Weather - Tuesday Mostly Sunny Dewey, IL Weather - Tuesday Night Partly Cloudy Dewey, IL Weather - Wednesday Chance Of Showers Dewey, IL Weather - Wednesday Night Chance Of T-Storm Dewey, IL Weather - Thursday Mostly Sunny Dewey, IL Weather - Thursday Night Mostly Clear Dewey, IL Weather - Friday Mostly Clear Dewey, IL Weather - Friday Night Chance Of Showers Dewey, IL Weather - Saturday Mostly Sunny Dewey, IL Weather - Saturday Night Chance Of Showers
Sunny Partly Cloudy Mostly Sunny Partly Cloudy Chance of Showers Chance of T-Storm Mostly Sunny Mostly Clear Mostly Clear Chance of Showers Mostly Sunny Chance of Showers
Hi: 81°FHi: 27°C
Lo: 60°FLo: 16°C Hi: 89°FHi: 32°C
Lo: 70°FLo: 21°C Hi: 91°FHi: 33°C
Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
Hi: 81°FHi: 27°C
Lo: 59°FLo: 15°C
Hi: 81°FHi: 27°C
Lo: 59°FLo: 15°C
Lo: 61°FLo: 16°C Hi: 89°FHi: 32°C
Lo: 65°FLo: 18°C
POP: 50% POP: 70% POP: 30% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 437 AM CDT Mon Sep 07 2026 Dewey, IL Weather - WeatherWorld.com

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Issued: 555 AM CDT Mon Sep 7 2026

Key Messages

  • Heat Returns Midweek: Hot and muggy conditions return Tuesday and Wednesday. Temperatures will top out in the 90s both days. There is a 50-80% chance of heat indices greater than 95 degrees south of I-70 Wednesday afternoon.
  • Midweek Storm Potential: A passing front brings a 70-90% chance for showers and thunderstorms Wednesday into Thursday.
SPC has a marginal (level 1 of 5) risk for severe weather south of a Jacksonville to Hoopeston line.

Discussion

... Issued at 202 AM CDT Mon Sep 7...