DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

4:54 AM CDT APR 25, 2026
Clear
52°F
Feels Like: 52°F
Dewpoint: 45°F
Rel. Hum.: 77%
Visibility: 10 miles
Wind: Calm
Pressure: 29.87 inches
Last 72 hours

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DECATUR, IL 62521
Weather Forecast

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Snow Depth pages
TODAY
Sunny. Highs in the mid 70s. Northeast winds 10 to 15 mph.
TONIGHT
Mostly clear. Lows in the upper 40s. Northeast winds around 10 mph.
SUNDAY
Mostly sunny. Highs in the mid 70s. East winds 10 to 15 mph.
SUNDAY NIGHT
Mostly cloudy. Not as cool with lows in the upper 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
MONDAY
Partly sunny with a chance of showers and thunderstorms in the morning, then mostly cloudy with showers and thunderstorms likely in the afternoon. Breezy with highs in the upper 70s. Southeast winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 70 percent.
MONDAY NIGHT
Showers and thunderstorms in the evening, then partly cloudy after midnight. Breezy with lows in the lower 50s. Chance of rain 90 percent.
TUESDAY
Mostly sunny. Cooler with highs in the mid 60s.
TUESDAY NIGHT
Partly cloudy. A chance of showers in the evening. Lows in the upper 40s. Chance of rain 30 percent.
WEDNESDAY
Mostly sunny. Highs in the mid 60s.
WEDNESDAY NIGHT
Mostly clear. Lows in the lower 40s.
THURSDAY AND THURSDAY NIGHT
Partly cloudy. Highs in the mid 60s. Lows in the lower 40s.
FRIDAY
Partly sunny. Highs in the lower 60s.

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  8:00 PM EDT  4/24/2026
Saturday
25 APR 2026
DECATUR, IL 62521 weather forecast Day 1, 0 hours 1 AM 56° 54° Partly Cloudy 0%

0% Thunder
( 1% severe)
N   8 77% 49°
Low 51° DECATUR, IL 62521 weather forecast Day 1, 3 hours 4 AM 53° 50° Partly Cloudy NNE   8 80% 47°
High 74° DECATUR, IL 62521 weather forecast Day 1, 6 hours 7 AM 52° 49° Clear 0%

0% Thunder
( 0% severe)
NNE   9 86% 48°

Clear



DECATUR, IL 62521 weather forecast Day 1, 9 hours 10 AM 62° 61° Partly Cloudy NE   12 67% 51°
DECATUR, IL 62521 weather forecast Day 1, 12 hours 1 PM 70° 70° Clear 0%

0% Thunder
( 1% severe)
NE   12 45% 48°
DECATUR, IL 62521 weather forecast Day 1, 15 hours 4 PM 73° 73° Clear NE   13 35% 44°
DECATUR, IL 62521 weather forecast Day 1, 18 hours 7 PM 69° 69° Partly Cloudy 0%

0% Thunder
( 1% severe)
NE   12 39% 43°
DECATUR, IL 62521 weather forecast Day 1, 21 hours 10 PM 58° 56° Clear NE   12 57% 43°
Sunday
26 APR 2026
DECATUR, IL 62521 weather forecast Day 2, 0 hours 1 AM 52° 48° Clear 0%

0% Thunder
( 1% severe)
ENE   10 71% 43°
Low 48° DECATUR, IL 62521 weather forecast Day 2, 3 hours 4 AM 50° 46° Partly Cloudy E   10 80% 44°
High 75° DECATUR, IL 62521 weather forecast Day 2, 6 hours 7 AM 50° 46° Partly Cloudy 1%

0% Thunder
( 1% severe)
E   10 86% 46°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 10 AM 62° 61° Partly Cloudy E   12 60% 48°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 1 PM 71° 71° Partly Cloudy 1%

0% Thunder
( 2% severe)
E   12 44% 48°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 4 PM 74° 74° Partly Cloudy E   13 38% 47°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 7 PM 71° 71° Mostly Cloudy 1%

0% Thunder
( 3% severe)
ESE   13 42% 47°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 10 PM 63° 62° Mostly Cloudy ESE   13 58% 48°

DECATUR, IL extended weather forecast

Monday
27 APR 2026
Tuesday
28 APR 2026
Wednesday
29 APR 2026
Thursday
30 APR 2026
Friday
1 MAY 2026
Low 56° Low 55° Low 46° Low 42° Low 42°
High 77° High 66° High 63° High 63° High 60°
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
81% Rain
Overcast
63% Rain
Overcast
27% Rain
Mostly Cloudy
29% Rain
Mostly Cloudy
30% Rain
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