DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

3:54 PM CST JAN 29, 2026
Overcast
16°F
Feels Like: 7°F
Dewpoint: 7°F
Rel. Hum.: 63%
Visibility: 10 miles
Wind: N at 6 mph
Pressure: 30.31 inches
Last 72 hours

Local Area Snow Depth

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DECATUR, IL 62521
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Partly cloudy this evening, then becoming mostly cloudy. Cold with lows around 2 below. North winds around 5 mph.
FRIDAY
Mostly sunny. Highs around 15. North winds 10 to 15 mph. Wind chill values as low as 15 below in the morning.
FRIDAY NIGHT
Mostly cloudy with a chance of flurries in the evening, then partly cloudy after midnight. Cold with lows around 2 above. North winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 15 below.
SATURDAY
Mostly sunny. Highs around 19. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 15 below in the morning.
SATURDAY NIGHT
Mostly clear. Cold with lows around zero. Northwest winds 5 to 10 mph.
SUNDAY
Mostly sunny. Highs in the lower 20s. Wind chill values as low as 10 below in the morning.
SUNDAY NIGHT
Mostly cloudy. A chance of snow in the evening. Not as cool with lows 10 to 15. Chance of snow 30 percent.
MONDAY THROUGH TUESDAY
Mostly cloudy. Highs in the upper 20s. Lows around 15.
TUESDAY NIGHT
Mostly cloudy with a 40 percent chance of snow. Lows around 20.
WEDNESDAY
Mostly cloudy. A chance of snow in the morning. Highs in the upper 20s. Chance of snow 30 percent.
WEDNESDAY NIGHT AND THURSDAY
Mostly cloudy. Lows 15 to 20. Highs in the upper 20s.

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  1/29/2026
Thursday
29 JAN 2026
DECATUR, IL 62521 weather forecast Day 1, 12 hours 12 PM 15° Mostly Cloudy 3%

0% Thunder
( 0% severe)
NNE   5 66%
High 18° DECATUR, IL 62521 weather forecast Day 1, 15 hours 3 PM 17° 10° Mostly Cloudy N   5 63%
Mostly Cloudy



DECATUR, IL 62521 weather forecast Day 1, 18 hours 6 PM 12° Mostly Cloudy 3%

0% Thunder
( 0% severe)
N   3 73%
DECATUR, IL 62521 weather forecast Day 1, 21 hours 9 PM Mostly Cloudy N   2 77%
Friday
30 JAN 2026
DECATUR, IL 62521 weather forecast Day 2, 0 hours 12 AM -4° Partly Cloudy 1%

0% Thunder
( 0% severe)
N   3 81% -1°
Low -2° DECATUR, IL 62521 weather forecast Day 2, 3 hours 3 AM -10° Partly Cloudy N   5 80% -4°
High 14° DECATUR, IL 62521 weather forecast Day 2, 6 hours 6 AM -1° -13° Partly Cloudy 0%

0% Thunder
( 0% severe)
N   6 80% -5°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 9 AM -8° Partly Cloudy N   7 76% -1°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 12 PM 11° -2° Partly Cloudy 2%

0% Thunder
( 0% severe)
NNW   9 69%
DECATUR, IL 62521 weather forecast Day 2, 15 hours 3 PM 14° Mostly Cloudy N   10 66%
DECATUR, IL 62521 weather forecast Day 2, 18 hours 6 PM -4° Mostly Cloudy 2%

0% Thunder
( 0% severe)
NNW   9 77%
DECATUR, IL 62521 weather forecast Day 2, 21 hours 9 PM -5° Mostly Cloudy N   10 77%
Saturday
31 JAN 2026
DECATUR, IL 62521 weather forecast Day 3, 0 hours 12 AM -6° Partly Cloudy 1%

0% Thunder
( 0% severe)
N   10 73%
Low 2° DECATUR, IL 62521 weather forecast Day 3, 3 hours 3 AM -10° Partly Cloudy NNW   12 73%
High 18° DECATUR, IL 62521 weather forecast Day 3, 6 hours 6 AM -12° Partly Cloudy 1%

0% Thunder
( 0% severe)
NW   13 76%

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 3, 9 hours 9 AM -10° Partly Cloudy NW   14 77%
DECATUR, IL 62521 weather forecast Day 3, 15 hours 12 PM 14° Partly Cloudy 0%

0% Thunder
( 0% severe)
NNW   13 74%
DECATUR, IL 62521 weather forecast Day 3, 18 hours 3 PM 18° Partly Cloudy NW   12 67% 10°
DECATUR, IL 62521 weather forecast Day 3, 21 hours 6 PM 14° Partly Cloudy     NW   8 77%

DECATUR, IL extended weather forecast

Sunday
1 FEB 2026
Monday
2 FEB 2026
Tuesday
3 FEB 2026
Wednesday
4 FEB 2026
Thursday
5 FEB 2026
Low 3° Low 14° Low 19° Low 17° Low 18°
High 25° High 32° High 31° High 27° High 38°
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
Partly Cloudy
6% Snow
Partly Cloudy
9% Snow
Overcast
29% Snow
Mostly Cloudy
29% Snow
Partly Cloudy
14% Snow
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