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Winter is right around the corner, and it could be snowy. Read AccuWeather's 2025-26 U.S. winter forecast. Chevron right

Decatur, IL

59°F
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Decatur

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Winter Center
Today Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities
Tuesday, December 30

Day

12/30
23°Hi
RealFeel® 21°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
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RealFeel Shade™ 20°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
Mostly cloudy and very cold with a little snow

Max UV Index2.0 (Low)

WindNW 7 mph

Wind Gusts20 mph

Probability of Precipitation55%

Probability of Thunderstorms0%

Precipitation0.01 in

Snow0.2

Hours of Precipitation4

Cloud Cover65%

Night

12/30
14°Lo
RealFeel® -1°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
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A little snow in the evening; otherwise, mostly cloudy and cold

WindWNW 7 mph

Wind Gusts25 mph

Probability of Precipitation55%

Probability of Thunderstorms0%

Precipitation0.00 in

Snow0.1

Hours of Precipitation2

Cloud Cover82%

Sun & Moon

9 hrs 23 mins
Rise 8:17 AM
Set 5:40 PM
Waxing Gibbous
Rise 2:00 PM
Set 5:24 AM

Temperature History

12/30
High
Low
Forecast
23°
14°
Average
35°
22°
Last Year
50°
41°
Record
64°
1965
-14°
1983

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World North America United States Illinois Decatur

Weather Near Decatur:

  • Champaign, IL
  • Peoria, IL
  • Springfield, IL
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