DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

12:54 AM CST JAN 25, 2026
Overcast
Light Snow
Mist
7°F
Feels Like: -11°F
Dewpoint: 3°F
Rel. Hum.: 81%
Visibility: 1 1/4 miles
Wind: NNE at 16 mph
Pressure: 30.22 inches
Last 72 hours

Local Area Snow Depth

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DECATUR, IL 62521
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
REST OF TONIGHT
Snow. Snow accumulation of 1 to 3 inches. Not as cool. Near steady temperature around 8 above. Northeast winds 10 to 15 mph. Chance of snow near 100 percent. Wind chill values as low as 9 below.
SUNDAY
Snow. Total snow accumulation of 6 to 10 inches. Highs around 14. North winds 10 to 15 mph with gusts up to 25 mph. Chance of snow near 100 percent. Wind chill values as low as 8 below.
SUNDAY NIGHT
Partly cloudy in the evening, then clearing. Colder with lows around 4 below. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 24 below.
MONDAY
Sunny. Highs around 10 above. West winds 10 to 15 mph. Wind chill values as low as 24 below.
MONDAY NIGHT
Mostly clear. Cold with lows around zero. Temperature rising to around 9 above after midnight. Southwest winds 15 to 20 mph. Wind chill values as low as 15 below.
TUESDAY AND TUESDAY NIGHT
Partly cloudy. Highs in the mid 20s. Lows around zero. Wind chill values as low as 10 below.
WEDNESDAY
Partly sunny. Highs 15 to 20. Wind chill values as low as 10 below in the morning.
WEDNESDAY NIGHT THROUGH SATURDAY
Partly cloudy. Lows 5 below to zero. Highs 15 to 20. Wind chill values as low as 20 below.

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 PM EST  1/24/2026
Sunday
25 JAN 2026
DECATUR, IL 62521 weather forecast Day 1, 0 hours 12 AM -5° Mostly Cloudy 88%
SNOW
***
0% Thunder
( 0% severe)
NE   10 81%
Low 8° DECATUR, IL 62521 weather forecast Day 1, 3 hours 3 AM -6° Mostly Cloudy NNE   12 81%
High 13° DECATUR, IL 62521 weather forecast Day 1, 6 hours 6 AM -7° Mostly Cloudy 91%
SNOW
***
0% Thunder
( 0% severe)
NNE   13 85%

Mostly Cloudy

Snow

DECATUR, IL 62521 weather forecast Day 1, 9 hours 9 AM -8° Mostly Cloudy NNE   15 85%
DECATUR, IL 62521 weather forecast Day 1, 12 hours 12 PM 11° -6° Mostly Cloudy 74%
SNOW
2.5–5 in
0% Thunder
( 0% severe)
N   16 86%
DECATUR, IL 62521 weather forecast Day 1, 15 hours 3 PM 12° -5° Mostly Cloudy NNW   16 81%
DECATUR, IL 62521 weather forecast Day 1, 18 hours 6 PM 11° -5° Mostly Cloudy 10%
SNOW
.1–1 in
0% Thunder
( 0% severe)
NNW   15 77%
DECATUR, IL 62521 weather forecast Day 1, 21 hours 9 PM -9° Partly Cloudy NNW   14 73%
Monday
26 JAN 2026
DECATUR, IL 62521 weather forecast Day 2, 0 hours 12 AM -13° Clear 3%

0% Thunder
( 0% severe)
NW   13 72% -2°
Low -5° DECATUR, IL 62521 weather forecast Day 2, 3 hours 3 AM -18° Clear NW   13 72% -6°
High 8° DECATUR, IL 62521 weather forecast Day 2, 6 hours 6 AM -2° -20° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   12 76% -7°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 9 AM -1° -19° Partly Cloudy WNW   13 76% -6°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 12 PM -14° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   14 72% -2°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 3 PM -9° Partly Cloudy W   13 65% -1°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 6 PM -12° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   9 72% -3°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 9 PM -12° Clear SSW   12 69% -3°

DECATUR, IL extended weather forecast

Tuesday
27 JAN 2026
Wednesday
28 JAN 2026
Thursday
29 JAN 2026
Friday
30 JAN 2026
Saturday
31 JAN 2026
Low 5° Low -7° Low -6° Low 9° Low 9°
High 19° High 11° High 15° High 15° High 14°
DECATUR, IL 62521 weather forecast Day 3 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
Mostly Cloudy
3% Snow
Partly Cloudy
6% Snow
Mostly Cloudy
14% Snow
Overcast
30% Snow
Partly Cloudy
10% Snow
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