DECATUR, IL 62521 Weather Forecast & Current Conditions

Enter ZIP code or City, State   
    


DECATUR, IL
Current Weather

3:54 PM CDT APR 24, 2026
Broken Clouds
70°F
Feels Like: 70°F
Dewpoint: 57°F
Rel. Hum.: 63%
Visibility: 10 miles
Wind: Variable at 3 mph
Pressure: 29.77 inches
Last 72 hours

Local Area Snow Depth

Illinois Current Weather

Illinois MOS Forecast Weather


Regional Weather Maps


(Automated weather data from NWS/FAA)
10-Day model forecast maps
2025 Hurricanes

DECATUR, IL 62521
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly cloudy this evening, then clearing. Cooler with lows around 50. North winds 5 to 10 mph.
SATURDAY
Sunny. Highs in the mid 70s. Northeast winds 10 to 15 mph.
SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. Northeast winds 10 to 15 mph.
SUNDAY
Mostly sunny. Highs in the mid 70s. East winds 10 to 15 mph.
SUNDAY NIGHT
Mostly cloudy. Lows in the mid 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
MONDAY
Partly sunny. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Breezy with highs in the upper 70s. Chance of rain 70 percent.
MONDAY NIGHT
Showers with thunderstorms likely in the evening, then partly cloudy after midnight. Breezy with lows in the lower 50s. Chance of rain 90 percent.
TUESDAY THROUGH WEDNESDAY NIGHT
Partly cloudy. Highs in the upper 60s. Lows in the upper 40s.
THURSDAY
Mostly sunny. A chance of showers in the afternoon. Highs in the mid 60s. Chance of rain 30 percent.
THURSDAY NIGHT AND FRIDAY
Mostly cloudy. A 40 percent chance of showers. Lows in the mid 40s. 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 AM EDT  4/24/2026
Friday
24 APR 2026
DECATUR, IL 62521 weather forecast Day 1, 12 hours 1 PM 69° 69° Mostly Cloudy 44%
RAIN
.1–.25 in
0% Thunder
( 29% severe)
WSW   13 68% 58°
High 72° DECATUR, IL 62521 weather forecast Day 1, 15 hours 4 PM 71° 71° Mostly Cloudy W   12 59% 56°
Mostly Cloudy

Chance of Rain

DECATUR, IL 62521 weather forecast Day 1, 18 hours 7 PM 69° 69° Mostly Cloudy 7%

0% Thunder
( 5% severe)
NW   9 59% 54°
DECATUR, IL 62521 weather forecast Day 1, 21 hours 10 PM 62° 61° Mostly Cloudy NNW   8 67% 51°
Saturday
25 APR 2026
DECATUR, IL 62521 weather forecast Day 2, 0 hours 1 AM 57° 55° Partly Cloudy 2%

0% Thunder
( 1% severe)
N   9 72% 48°
Low 50° DECATUR, IL 62521 weather forecast Day 2, 3 hours 4 AM 53° 50° Partly Cloudy NNE   8 77% 46°
High 74° DECATUR, IL 62521 weather forecast Day 2, 6 hours 7 AM 52° 49° Clear 1%

0% Thunder
( 0% severe)
NNE   9 80% 46°

Clear



DECATUR, IL 62521 weather forecast Day 2, 9 hours 10 AM 62° 61° Partly Cloudy ENE   12 62% 49°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 1 PM 70° 70° Clear 2%

0% Thunder
( 0% severe)
NE   12 45% 48°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 4 PM 73° 73° Clear NE   13 34% 43°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 7 PM 68° 68° Clear 1%

0% Thunder
( 1% severe)
NE   12 39% 42°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 10 PM 58° 56° Partly Cloudy NE   12 57% 43°
Sunday
26 APR 2026
DECATUR, IL 62521 weather forecast Day 3, 0 hours 1 AM 52° 48° Partly Cloudy 1%

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

0% Thunder
( 1% severe)
E   10 83% 45°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 3, 9 hours 10 AM 61° 59° Partly Cloudy E   12 60% 47°
DECATUR, IL 62521 weather forecast Day 3, 15 hours 1 PM 70° 70° Partly Cloudy 3%

0% Thunder
( 1% severe)
E   13 45% 48°
DECATUR, IL 62521 weather forecast Day 3, 18 hours 4 PM 74° 74° Partly Cloudy E   14 38% 47°
DECATUR, IL 62521 weather forecast Day 3, 21 hours 7 PM 71° 71° Mostly Cloudy     E   13 44% 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 57° Low 55° Low 45° Low 42° Low 41°
High 76° High 65° High 65° High 62° High 64°
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
Overcast
73% Rain
Overcast
74% Rain
Partly Cloudy
30% Rain
Mostly Cloudy
20% Rain
Partly Cloudy
23% Rain
WEATHER SELECT BOX EXAMPLES:
for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:
Decatur, IL
Decatur, IL snow
Decatur, IL radar
IL map
-or-
-or-
-or-
 
62521
62521 snow
62521 radar
 
-or-
-or-
 
 
IL
IL snow
 
 
Copyright © 2024 WeatherStreet.com
Put our free WeatherStreet weather lookup on your web page.
Terms & Conditions