DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

3:54 PM CST JAN 30, 2026
Overcast
16°F
Feels Like: 1°F
Dewpoint: 3°F
Rel. Hum.: 51%
Visibility: 10 miles
Wind: N at 16 mph
Pressure: 30.37 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 this evening, then becoming partly cloudy. A chance of flurries. Cold with lows around 2 above. North winds 10 to 15 mph. Wind chill values as low as 15 below.
SATURDAY
Partly sunny. Highs around 19. Northwest winds 10 to 15 mph. Wind chill values as low as 15 below in the morning.
SATURDAY NIGHT
Partly cloudy in the evening, then clearing. Cold with lows around zero. West winds 5 to 10 mph.
SUNDAY
Partly sunny. Highs in the lower 20s. Southwest winds 5 to 10 mph. Wind chill values as low as 10 below in the morning.
SUNDAY NIGHT
Mostly cloudy. A chance of snow in the evening. Little or no snow accumulation. Not as cool. Near steady temperature around 18. South winds 5 to 10 mph. Chance of snow 30 percent.
MONDAY AND MONDAY NIGHT
Mostly cloudy. Highs in the lower 30s. Lows around 20.
TUESDAY
Cloudy with a 40 percent chance of snow. Highs in the lower 30s.
TUESDAY NIGHT AND WEDNESDAY
Mostly cloudy. Lows 15 to 20. Highs in the mid 20s.
WEDNESDAY NIGHT AND THURSDAY
Mostly cloudy. Lows around 10 above. Highs in the upper 20s. Wind chill values as low as zero.
THURSDAY NIGHT AND FRIDAY
Mostly cloudy. Lows in the lower 20s. Highs in the mid 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  1/30/2026
Friday
30 JAN 2026
DECATUR, IL 62521 weather forecast Day 1, 12 hours 12 PM 13° Partly Cloudy 0%

0% Thunder
( 0% severe)
N   8 63%
High 17° DECATUR, IL 62521 weather forecast Day 1, 15 hours 3 PM 16° Partly Cloudy N   10 57%
Mostly Cloudy



DECATUR, IL 62521 weather forecast Day 1, 18 hours 6 PM 11° -1° Mostly Cloudy 1%

0% Thunder
( 0% severe)
N   8 73%
DECATUR, IL 62521 weather forecast Day 1, 21 hours 9 PM 10° -3° Mostly Cloudy N   9 81%
Saturday
31 JAN 2026
DECATUR, IL 62521 weather forecast Day 2, 0 hours 12 AM -5° Partly Cloudy 6%

0% Thunder
( 0% severe)
N   10 81%
Low 3° DECATUR, IL 62521 weather forecast Day 2, 3 hours 3 AM -8° Partly Cloudy NNW   12 73%
High 18° DECATUR, IL 62521 weather forecast Day 2, 6 hours 6 AM -10° Partly Cloudy 6%

0% Thunder
( 0% severe)
NW   13 77%

Mostly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 9 AM -9° Mostly Cloudy NNW   14 77%
DECATUR, IL 62521 weather forecast Day 2, 12 hours 12 PM 14° -1° Mostly Cloudy 0%

0% Thunder
( 0% severe)
NNW   14 74%
DECATUR, IL 62521 weather forecast Day 2, 15 hours 3 PM 18° Partly Cloudy NW   13 71% 11°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 6 PM 14° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   9 82% 10°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 9 PM 12° Partly Cloudy WNW   7 81%
Sunday
1 FEB 2026
DECATUR, IL 62521 weather forecast Day 3, 0 hours 12 AM -1° Clear 0%

0% Thunder
( 0% severe)
WNW   5 85%
Low 1° DECATUR, IL 62521 weather forecast Day 3, 3 hours 3 AM -4° Partly Cloudy W   5 81%
High 22° DECATUR, IL 62521 weather forecast Day 3, 6 hours 6 AM -4° Partly Cloudy 1%

0% Thunder
( 0% severe)
WSW   3 81% -1°

Mostly Cloudy



DECATUR, IL 62521 weather forecast Day 3, 9 hours 9 AM 10° Partly Cloudy SSW   5 73%
DECATUR, IL 62521 weather forecast Day 3, 15 hours 12 PM 18° Mostly Cloudy 8%

0% Thunder
( 0% severe)
SSW   8 71% 11°
DECATUR, IL 62521 weather forecast Day 3, 18 hours 3 PM 21° 10° Mostly Cloudy S   10 75% 15°
DECATUR, IL 62521 weather forecast Day 3, 21 hours 6 PM 19° Mostly Cloudy     S   8 82% 15°

DECATUR, IL extended weather forecast

Monday
2 FEB 2026
Tuesday
3 FEB 2026
Wednesday
4 FEB 2026
Thursday
5 FEB 2026
Friday
6 FEB 2026
Low 12° Low 15° Low 24° Low 20° Low 21°
High 31° High 34° High 31° High 33° High 34°
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
28% Snow
Mostly Cloudy
36% Snow
Overcast
64% Snow/Ice
Overcast
21% Snow
Overcast
31% Snow
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