DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

3:54 PM CST JAN 25, 2026
Overcast
12°F
Feels Like: -5°F
Dewpoint: 7°F
Rel. Hum.: 77%
Visibility: 5 miles
Wind: NNW at 17 mph, gusts to 29
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 cloudy this evening, then clearing. Colder with lows around 7 below. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 25 below.
MONDAY
Mostly sunny. Highs around 8 above. West winds 10 to 15 mph. Wind chill values as low as 25 below.
MONDAY NIGHT
Mostly clear. Cold with lows around 1 above. Temperature rising to around 10 above after midnight. Southwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 17 below.
TUESDAY
Mostly sunny. Not as cool with highs in the lower 20s. Temperature falling to around 16 in the afternoon. West winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 7 below in the morning.
TUESDAY NIGHT
Mostly clear. Cold with lows around 6 below. Northwest winds 5 to 10 mph. Wind chill values as low as 20 below.
WEDNESDAY
Partly sunny. Highs around 20. Wind chill values as low as 20 below in the morning.
WEDNESDAY NIGHT
Partly cloudy. Cold with lows around 5 below. Wind chill values as low as 20 below.
THURSDAY AND THURSDAY NIGHT
Mostly cloudy. Highs around 10 above. Lows around zero. Wind chill values as low as 20 below.
FRIDAY
Mostly sunny. Highs 10 to 15. Wind chill values as low as 15 below in the morning.
FRIDAY NIGHT
Mostly clear. Cold with lows around zero.
SATURDAY AND SATURDAY NIGHT
Partly cloudy. Highs 15 to 20. Lows zero to 5 above zero. Wind chill values as low as 15 below.
SUNDAY
Partly sunny. Highs in the mid 20s. Wind chill values as low as 10 below in the morning.

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  1/25/2026
Sunday
25 JAN 2026
DECATUR, IL 62521 weather forecast Day 1, 12 hours 12 PM 11° -6° Mostly Cloudy 63%
SNOW
10–20 in
0% Thunder
( 0% severe)
N   16 81%
High 14° DECATUR, IL 62521 weather forecast Day 1, 15 hours 3 PM 13° -3° Mostly Cloudy NNW   16 77%
Mostly Cloudy

Snow Likely

DECATUR, IL 62521 weather forecast Day 1, 18 hours 6 PM 10° -6° Mostly Cloudy 4%

0% Thunder
( 0% severe)
NNW   14 77%
DECATUR, IL 62521 weather forecast Day 1, 21 hours 9 PM -11° Partly Cloudy NW   14 77%
Monday
26 JAN 2026
DECATUR, IL 62521 weather forecast Day 2, 0 hours 12 AM -15° Partly Cloudy 1%

0% Thunder
( 0% severe)
NW   12 76% -3°
Low -6° DECATUR, IL 62521 weather forecast Day 2, 3 hours 3 AM -2° -20° Partly Cloudy NW   12 72% -8°
High 9° DECATUR, IL 62521 weather forecast Day 2, 6 hours 6 AM -4° -22° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   12 76% -9°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 9 AM -2° -20° Partly Cloudy NW   12 76% -7°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 12 PM -13° Mostly Cloudy 0%

0% Thunder
( 0% severe)
WNW   13 72% -2°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 3 PM -8° Partly Cloudy W   12 65% -1°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 6 PM -12° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   9 76% -2°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 9 PM -12° Clear SSW   13 72% -1°
Tuesday
27 JAN 2026
DECATUR, IL 62521 weather forecast Day 3, 0 hours 12 AM -11° Partly Cloudy 1%

0% Thunder
( 0% severe)
SSW   16 73%
Low 2° DECATUR, IL 62521 weather forecast Day 3, 3 hours 3 AM 10° -7° Partly Cloudy SW   16 73%
High 21° DECATUR, IL 62521 weather forecast Day 3, 6 hours 6 AM 12° -4° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   15 81%

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 3, 9 hours 9 AM 15° Mostly Cloudy W   15 86% 12°
DECATUR, IL 62521 weather forecast Day 3, 15 hours 12 PM 19° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   15 71% 12°
DECATUR, IL 62521 weather forecast Day 3, 18 hours 3 PM 18° Partly Cloudy WNW   14 64%
DECATUR, IL 62521 weather forecast Day 3, 21 hours 6 PM 12° -1° Partly Cloudy     NW   9 69%

DECATUR, IL extended weather forecast

Wednesday
28 JAN 2026
Thursday
29 JAN 2026
Friday
30 JAN 2026
Saturday
31 JAN 2026
Sunday
1 FEB 2026
Low -7° Low -6° Low 9° Low 9° Low 7°
High 11° High 15° High 15° High 14° High 25°
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
Mostly Cloudy
14% Snow
Overcast
30% Snow
Partly Cloudy
10% Snow
Overcast
18% Snow
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