DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

12:54 AM CST NOV 26, 2025
Few Clouds
39°F
Feels Like: 29°F
Dewpoint: 27°F
Rel. Hum.: 61%
Visibility: 10 miles
Wind: W at 22 mph, gusts to 36
Pressure: 29.91 inches
Last 72 hours

Local Area Snow Depth

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DECATUR, IL 62521
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
REST OF TONIGHT
Mostly cloudy and breezy, cooler with lows in the lower 30s. West winds 20 to 25 mph with gusts up to 40 mph.
WEDNESDAY
Cloudy in the morning, then becoming mostly sunny. Windy and much cooler with highs around 40. West winds 20 to 30 mph with gusts up to 45 mph.
WEDNESDAY NIGHT
Partly cloudy. Cooler with lows in the lower 20s. West winds 15 to 20 mph with gusts up to 30 mph.
THANKSGIVING DAY
Sunny. Highs in the upper 30s. Northwest winds 15 to 20 mph with gusts up to 30 mph.
THURSDAY NIGHT
Mostly clear. Lows around 18. Northwest winds 5 to 10 mph.
FRIDAY
Sunny. Highs in the mid 30s.
FRIDAY NIGHT
Mostly cloudy. Snow likely after midnight. Light snow accumulation possible. Lows in the mid 20s. Chance of snow 60 percent.
SATURDAY
Snow in the morning, then rain and snow in the afternoon. Additional light snow accumulation. Highs in the mid 30s. Chance of precipitation 90 percent.
SATURDAY NIGHT
Cloudy. Rain likely, mainly in the evening. Near steady temperature in the lower 30s. Chance of rain 70 percent.
SUNDAY AND SUNDAY NIGHT
Mostly cloudy with a 30 percent chance of snow. Highs in the lower 30s. Lows around 10 above.
MONDAY THROUGH TUESDAY
Mostly cloudy. Highs in the mid 20s. Lows around 10 above. Wind chill values as low as zero.

Visible Weather Satellite
DECATUR, IL 62521
Infrared Weather Satellite
DECATUR, IL 62521
NEXRAD Weather Radar
DECATUR, IL 62521

DECATUR, IL 3 hourly weather forecast

weather forecast created  7:00 PM EST 11/25/2025
Wednesday
26 NOV 2025
DECATUR, IL 62521 weather forecast Day 1, 0 hours 12 AM 43° 35° Partly Cloudy 1%

0% Thunder
( 0% severe)
W   17 70% 34°
Low 34° DECATUR, IL 62521 weather forecast Day 1, 3 hours 3 AM 37° 26° Mostly Cloudy W   21 69% 28°
High 41° DECATUR, IL 62521 weather forecast Day 1, 6 hours 6 AM 35° 23° Mostly Cloudy 3%

0% Thunder
( 0% severe)
W   23 69% 26°

Mostly Cloudy




Windy
DECATUR, IL 62521 weather forecast Day 1, 9 hours 9 AM 35° 23° Mostly Cloudy W   25 66% 25°
DECATUR, IL 62521 weather forecast Day 1, 12 hours 12 PM 37° 25° Mostly Cloudy 1%

0% Thunder
( 0% severe)
W   26 58% 24°
DECATUR, IL 62521 weather forecast Day 1, 15 hours 3 PM 39° 28° Partly Cloudy W   24 47% 21°
DECATUR, IL 62521 weather forecast Day 1, 18 hours 6 PM 36° 26° Clear 0%

0% Thunder
( 0% severe)
WNW   17 48% 19°
DECATUR, IL 62521 weather forecast Day 1, 21 hours 9 PM 33° 23° Partly Cloudy WNW   15 54% 19°
Thursday
27 NOV 2025
DECATUR, IL 62521 weather forecast Day 2, 0 hours 12 AM 30° 19° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   14 61% 19°
Low 23° DECATUR, IL 62521 weather forecast Day 2, 3 hours 3 AM 28° 17° Partly Cloudy WNW   14 63% 18°
High 37° DECATUR, IL 62521 weather forecast Day 2, 6 hours 6 AM 25° 13° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   14 69% 17°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 9 AM 29° 17° Partly Cloudy WNW   16 61% 18°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 12 PM 34° 23° Clear 0%

0% Thunder
( 0% severe)
WNW   17 49% 18°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 3 PM 36° 26° Clear WNW   16 41% 16°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 6 PM 31° 22° Clear 0%

0% Thunder
( 0% severe)
WNW   12 51% 16°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 9 PM 28° 19° Clear NW   10 57% 16°

DECATUR, IL extended weather forecast

Friday
28 NOV 2025
Saturday
29 NOV 2025
Sunday
30 NOV 2025
Monday
1 DEC 2025
Tuesday
2 DEC 2025
Low 19° Low 21° Low 25° Low 14° Low 13°
High 32° High 37° High 30° High 24° High 22°
DECATUR, IL 62521 weather forecast Day 3 DECATUR, IL 62521 weather forecast Day 4 DECATUR, IL 62521 weather forecast Day 5 DECATUR, IL 62521 weather forecast Day 6 DECATUR, IL 62521 weather forecast Day 7
Clear
2% Snow
Overcast
77% Snow
Overcast
77% Rain/Snow
Overcast
18% Snow
Overcast
24% Snow
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