DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

2:54 PM CST NOV 26, 2025
Few Clouds
39°F
Feels Like: 28°F
Dewpoint: 18°F
Rel. Hum.: 41%
Visibility: 10 miles
Wind: W at 26 mph, gusts to 40
Pressure: 30.10 inches
Last 72 hours

Local Area Snow Depth

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DECATUR, IL 62521
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear this evening, then becoming partly cloudy. Lows in the mid 20s. West winds 15 to 20 mph with gusts up to 35 mph.
THANKSGIVING DAY
Sunny. Highs in the upper 30s. West winds 15 to 20 mph.
THURSDAY NIGHT
Mostly clear. Lows around 18. Northwest winds 10 to 15 mph.
FRIDAY
Sunny. Highs in the mid 30s. West winds 5 to 10 mph.
FRIDAY NIGHT
Mostly cloudy. A chance of snow after midnight. Light snow accumulation possible. Near steady temperature in the mid 20s. Southeast winds around 5 mph, increasing to 10 to 15 mph after midnight. Chance of snow 50 percent.
SATURDAY
Snow in the morning, then rain and snow in the afternoon. Additional moderate snow accumulation. Highs in the mid 30s. Chance of precipitation near 100 percent.
SATURDAY NIGHT
Cloudy. Rain, mainly in the evening. Lows in the mid 20s. Chance of rain 80 percent.
SUNDAY AND SUNDAY NIGHT
Mostly cloudy. Highs around 30. Lows around 10 above.
MONDAY
Mostly cloudy. Highs in the lower 20s.
MONDAY NIGHT
Mostly cloudy. A chance of snow in the evening. Lows around 10 above. Chance of snow 30 percent.
TUESDAY AND TUESDAY NIGHT
Partly cloudy. Highs in the mid 20s. Lows around 10 above. Wind chill values as low as zero.
WEDNESDAY
Partly sunny. Highs in the lower 30s.

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 AM EST 11/26/2025
Wednesday
26 NOV 2025
DECATUR, IL 62521 weather forecast Day 1, 12 hours 12 PM 38° 26° Mostly Cloudy 0%

0% Thunder
( 0% severe)
W   26 53% 23°
High 41° DECATUR, IL 62521 weather forecast Day 1, 15 hours 3 PM 40° 30° Partly Cloudy W   24 43% 20°
Decreasing Clouds




Windy
DECATUR, IL 62521 weather forecast Day 1, 18 hours 6 PM 35° 25° Clear 0%

0% Thunder
( 0% severe)
WNW   17 47% 18°
DECATUR, IL 62521 weather forecast Day 1, 21 hours 9 PM 32° 22° Clear WNW   15 53% 18°
Thursday
27 NOV 2025
DECATUR, IL 62521 weather forecast Day 2, 0 hours 12 AM 29° 18° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   14 61% 18°
Low 24° DECATUR, IL 62521 weather forecast Day 2, 3 hours 3 AM 28° 17° Partly Cloudy WNW   14 60% 17°
High 37° DECATUR, IL 62521 weather forecast Day 2, 6 hours 6 AM 26° 14° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   14 66% 17°

Clear



DECATUR, IL 62521 weather forecast Day 2, 9 hours 9 AM 29° 17° Clear WNW   16 61% 18°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 12 PM 35° 25° Clear 0%

0% Thunder
( 0% severe)
WNW   16 47% 18°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 3 PM 36° 26° Clear WNW   16 43% 17°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 6 PM 31° 22° Clear 0%

0% Thunder
( 0% severe)
WNW   12 53% 17°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 9 PM 28° 19° Partly Cloudy NW   10 60% 17°
Friday
28 NOV 2025
DECATUR, IL 62521 weather forecast Day 3, 0 hours 12 AM 25° 15° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   9 65% 16°
Low 19° DECATUR, IL 62521 weather forecast Day 3, 3 hours 3 AM 23° 14° Partly Cloudy WNW   8 68% 15°
High 34° DECATUR, IL 62521 weather forecast Day 3, 6 hours 6 AM 21° 12° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   7 75% 15°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 3, 9 hours 9 AM 26° 17° Partly Cloudy NW   8 63% 16°
DECATUR, IL 62521 weather forecast Day 3, 15 hours 12 PM 31° 24° Clear 0%

0% Thunder
( 0% severe)
WNW   7 48% 15°
DECATUR, IL 62521 weather forecast Day 3, 18 hours 3 PM 33° 29° Partly Cloudy W   5 42% 14°
DECATUR, IL 62521 weather forecast Day 3, 21 hours 6 PM 27° 24° Mostly Cloudy     S   2 60% 16°

DECATUR, IL extended weather forecast

Saturday
29 NOV 2025
Sunday
30 NOV 2025
Monday
1 DEC 2025
Tuesday
2 DEC 2025
Wednesday
3 DEC 2025
Low 21° Low 25° Low 14° Low 13° Low 12°
High 37° High 30° High 24° High 22° High 33°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Overcast
77% Snow
Overcast
77% Rain/Snow
Overcast
18% Snow
Overcast
24% Snow
Mostly Cloudy
18% Snow
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