DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

12:54 AM CST NOV 22, 2025
Overcast
Mist
45°F
Feels Like: 42°F
Dewpoint: 43°F
Rel. Hum.: 93%
Visibility: 5 miles
Wind: NE at 6 mph
Pressure: 29.99 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
Mostly cloudy. Rain likely late this evening, then a chance of rain. Cooler with lows in the upper 30s. North winds 5 to 10 mph. Chance of rain 70 percent.
SATURDAY
Sunny. Highs in the mid 50s. North winds around 5 mph, becoming west in the afternoon.
SATURDAY NIGHT
Mostly clear. Lows in the mid 30s. West winds 5 to 10 mph.
SUNDAY
Sunny. Highs in the upper 50s. West winds around 5 mph.
SUNDAY NIGHT
Mostly clear in the evening, then becoming mostly cloudy. Lows in the upper 30s. Southeast winds around 5 mph.
MONDAY
Mostly cloudy. Rain likely in the afternoon. Highs in the mid 50s. Chance of rain 60 percent.
MONDAY NIGHT
Rain. Near steady temperature in the upper 40s. Chance of rain 90 percent.
TUESDAY
Mostly cloudy in the morning, then becoming partly sunny. A 40 percent chance of rain. Highs in the upper 50s.
TUESDAY NIGHT AND WEDNESDAY
Partly cloudy. Lows in the lower 30s. Highs in the mid 40s.
WEDNESDAY NIGHT AND THANKSGIVING DAY
Partly cloudy. Lows in the mid 20s. Highs in the lower 40s.
THURSDAY NIGHT
Mostly cloudy. Lows in the mid 20s.
FRIDAY
Mostly sunny. Highs in the upper 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 PM EST 11/21/2025
Saturday
22 NOV 2025
DECATUR, IL 62521 weather forecast Day 1, 0 hours 12 AM 46° 41° Mostly Cloudy 7%

0% Thunder
( 0% severe)
NNE   9 93% 44°
Low 38° DECATUR, IL 62521 weather forecast Day 1, 3 hours 3 AM 43° 38° Mostly Cloudy NNE   8 93% 41°
High 55° DECATUR, IL 62521 weather forecast Day 1, 6 hours 6 AM 39° 34° Partly Cloudy 0%

0% Thunder
( 0% severe)
N   7 96% 38°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 1, 9 hours 9 AM 43° 40° Partly Cloudy NNE   5 82% 38°
DECATUR, IL 62521 weather forecast Day 1, 12 hours 12 PM 51° 50° Partly Cloudy 1%

0% Thunder
( 0% severe)
WNW   3 56% 36°
DECATUR, IL 62521 weather forecast Day 1, 15 hours 3 PM 53° 51° Partly Cloudy WSW   6 50% 35°
DECATUR, IL 62521 weather forecast Day 1, 18 hours 6 PM 47° 44° Partly Cloudy 1%

0% Thunder
( 0% severe)
SW   6 65% 36°
DECATUR, IL 62521 weather forecast Day 1, 21 hours 9 PM 44° 40° Partly Cloudy WSW   7 79% 38°
Sunday
23 NOV 2025
DECATUR, IL 62521 weather forecast Day 2, 0 hours 12 AM 43° 38° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   8 89% 40°
Low 36° DECATUR, IL 62521 weather forecast Day 2, 3 hours 3 AM 41° 36° Partly Cloudy WNW   7 93% 39°
High 56° DECATUR, IL 62521 weather forecast Day 2, 6 hours 6 AM 38° 34° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   6 96% 37°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 9 AM 44° 41° Partly Cloudy NW   5 79% 38°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 12 PM 52° 51° Clear 1%

0% Thunder
( 0% severe)
NNW   5 56% 37°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 3 PM 55° 55° Clear WNW   3 47% 35°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 6 PM 47° 46° Clear 1%

0% Thunder
( 0% severe)
SE   3 63% 35°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 9 PM 42° 40° Clear SE   3 73% 34°

DECATUR, IL extended weather forecast

Monday
24 NOV 2025
Tuesday
25 NOV 2025
Wednesday
26 NOV 2025
Thursday
27 NOV 2025
Friday
28 NOV 2025
Low 32° Low 47° Low 37° Low 25° Low 24°
High 56° High 58° High 44° High 40° High 39°
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
22% Rain
Overcast
85% Rain
Partly Cloudy
26% Rain/Snow
Clear
9% Snow
Partly Cloudy
6% Snow
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