DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

4:54 PM CST DEC 31, 2025
Overcast
36°F
Feels Like: 29°F
Dewpoint: 30°F
Rel. Hum.: 79%
Visibility: 10 miles
Wind: WSW at 10 mph
Pressure: 29.93 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 cloudy. Lows around 20. West winds around 10 mph, becoming north after midnight.
NEW YEARS DAY
Mostly sunny. Highs around 30. Northeast winds 5 to 10 mph, becoming northwest in the afternoon.
THURSDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows around 20. Light and variable winds, becoming east around 5 mph after midnight.
FRIDAY
Partly sunny. Highs in the mid 30s. Northeast winds around 5 mph.
FRIDAY NIGHT
Mostly cloudy. Lows in the lower 20s. Northeast winds around 5 mph.
SATURDAY
Mostly cloudy in the morning, then becoming mostly sunny. Highs in the mid 30s.
SATURDAY NIGHT
Mostly clear. Lows around 20.
SUNDAY
Sunny in the morning, then becoming partly sunny. Highs in the upper 30s.
SUNDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Near steady temperature in the lower 30s.
MONDAY AND MONDAY NIGHT
Partly cloudy. Highs around 50. Lows in the mid 30s.
TUESDAY AND TUESDAY NIGHT
Mostly cloudy. Highs in the lower 50s. Lows around 30.
WEDNESDAY
Mostly sunny. Highs in the mid 40s.

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 12/31/2025
Wednesday
31 DEC 2025
DECATUR, IL 62521 weather forecast Day 1, 12 hours 12 PM 35° 26° Mostly Cloudy 3%

0% Thunder
( 0% severe)
W   14 75% 28°
High 38° DECATUR, IL 62521 weather forecast Day 1, 15 hours 3 PM 37° 28° Mostly Cloudy W   15 72% 29°
Mostly Cloudy



DECATUR, IL 62521 weather forecast Day 1, 18 hours 6 PM 35° 27° Mostly Cloudy 4%

0% Thunder
( 0% severe)
W   12 82% 30°
DECATUR, IL 62521 weather forecast Day 1, 21 hours 9 PM 34° 26° Mostly Cloudy W   10 85% 30°
Thursday
1 JAN 2026
DECATUR, IL 62521 weather forecast Day 2, 0 hours 12 AM 31° 22° Mostly Cloudy 1%

0% Thunder
( 0% severe)
N   10 88% 28°
Low 18° DECATUR, IL 62521 weather forecast Day 2, 3 hours 3 AM 26° 16° Mostly Cloudy N   10 80% 21°
High 29° DECATUR, IL 62521 weather forecast Day 2, 6 hours 6 AM 21° 11° Partly Cloudy 2%

0% Thunder
( 0% severe)
NNE   9 71% 14°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 9 AM 21° 13° Clear NNE   6 58% 10°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 12 PM 26° 22° Partly Cloudy 2%

0% Thunder
( 0% severe)
N   3 44%
DECATUR, IL 62521 weather forecast Day 2, 15 hours 3 PM 28° 24° Clear W   3 42% 10°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 6 PM 24° 20° Partly Cloudy 0%

0% Thunder
( 0% severe)
E   2 56% 12°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 9 PM 23° 19° Partly Cloudy ESE   1 62% 13°
Friday
2 JAN 2026
DECATUR, IL 62521 weather forecast Day 3, 0 hours 12 AM 22° 18° Partly Cloudy 0%

0% Thunder
( 0% severe)
SE   2 65% 13°
Low 19° DECATUR, IL 62521 weather forecast Day 3, 3 hours 3 AM 22° 18° Partly Cloudy E   2 68% 14°
High 36° DECATUR, IL 62521 weather forecast Day 3, 6 hours 6 AM 21° 16° Mostly Cloudy 0%

0% Thunder
( 0% severe)
ENE   3 75% 15°

Mostly Cloudy



DECATUR, IL 62521 weather forecast Day 3, 9 hours 9 AM 26° 22° Mostly Cloudy ENE   3 63% 16°
DECATUR, IL 62521 weather forecast Day 3, 15 hours 12 PM 33° 28° Mostly Cloudy 0%

0% Thunder
( 0% severe)
ENE   6 51% 18°
DECATUR, IL 62521 weather forecast Day 3, 18 hours 3 PM 35° 29° Mostly Cloudy NE   7 50% 19°
DECATUR, IL 62521 weather forecast Day 3, 21 hours 6 PM 29° 22° Mostly Cloudy     NE   7 64% 19°

DECATUR, IL extended weather forecast

Saturday
3 JAN 2026
Sunday
4 JAN 2026
Monday
5 JAN 2026
Tuesday
6 JAN 2026
Wednesday
7 JAN 2026
Low 20° Low 20° Low 27° Low 37° Low 38°
High 33° High 37° High 46° High 53° High 48°
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
Mostly Cloudy
9% Snow
Partly Cloudy
12% Snow/Ice
Partly Cloudy
14% Rain/Ice
Overcast
19% Rain
Partly Cloudy
17% Rain
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