DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

5:54 PM CDT AUG 26, 2025
Few Clouds
73°F
Feels Like: 73°F
Dewpoint: 48°F
Rel. Hum.: 41%
Visibility: 10 miles
Wind: NNW at 6 mph
Pressure: 30.24 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 clear. Lows in the upper 40s. North winds around 5 mph this evening, becoming light and variable.
WEDNESDAY
Mostly sunny. Highs in the upper 70s. Southwest winds around 5 mph.
WEDNESDAY NIGHT
Partly cloudy. Lows in the mid 50s. South winds around 5 mph.
THURSDAY
Sunny. Highs in the lower 80s. Southwest winds 5 to 10 mph.
THURSDAY NIGHT
Mostly clear. Lows in the mid 50s. Northwest winds around 5 mph, becoming northeast after midnight.
FRIDAY AND FRIDAY NIGHT
Mostly clear. Highs in the upper 70s. Lows in the lower 50s.
SATURDAY AND SATURDAY NIGHT
Partly cloudy. Highs in the upper 70s. Lows in the mid 50s.
SUNDAY THROUGH TUESDAY
Mostly clear. Highs in the lower 80s. Lows in the mid 50s.

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  8/26/2025
Tuesday
26 AUG 2025
DECATUR, IL 62521 weather forecast Day 1, 12 hours 1 PM 73° 73° Clear 0%

0% Thunder
( 1% severe)
NNW   9 41% 48°
High 75° DECATUR, IL 62521 weather forecast Day 1, 15 hours 4 PM 74° 74° Clear NNW   9 40% 48°
Clear



DECATUR, IL 62521 weather forecast Day 1, 18 hours 7 PM 69° 69° Clear 0%

0% Thunder
( 1% severe)
NNW   6 51% 50°
DECATUR, IL 62521 weather forecast Day 1, 21 hours 10 PM 60° 61° Clear NNW   2 69% 50°
Wednesday
27 AUG 2025
DECATUR, IL 62521 weather forecast Day 2, 0 hours 1 AM 56° 56° Clear 0%

0% Thunder
( 1% severe)
  CALM 80% 50°
Low 51° DECATUR, IL 62521 weather forecast Day 2, 3 hours 4 AM 54° 54° Clear   CALM 83% 49°
High 79° DECATUR, IL 62521 weather forecast Day 2, 6 hours 7 AM 54° 54° Clear 0%

0% Thunder
( 1% severe)
SW   1 83% 49°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 10 AM 70° 70° Clear SSW   3 53% 52°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 1 PM 75° 75° Partly Cloudy 2%

0% Thunder
( 4% severe)
SW   7 45% 52°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 4 PM 77° 78° Partly Cloudy WSW   7 43% 53°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 7 PM 71° 71° Partly Cloudy 0%

0% Thunder
( 6% severe)
SW   5 57% 55°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 10 PM 64° 65° Mostly Cloudy S   3 70% 54°
Thursday
28 AUG 2025
DECATUR, IL 62521 weather forecast Day 3, 0 hours 1 AM 61° 61° Mostly Cloudy 1%

0% Thunder
( 4% severe)
S   6 75% 53°
Low 57° DECATUR, IL 62521 weather forecast Day 3, 3 hours 4 AM 61° 60° Partly Cloudy S   7 75% 53°
High 82° DECATUR, IL 62521 weather forecast Day 3, 6 hours 7 AM 60° 59° Partly Cloudy 2%

0% Thunder
( 4% severe)
SSW   7 78% 53°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 3, 9 hours 10 AM 72° 72° Partly Cloudy WSW   8 59% 57°
DECATUR, IL 62521 weather forecast Day 3, 15 hours 1 PM 79° 80° Partly Cloudy 6%

0% Thunder
( 14% severe)
WSW   9 49% 58°
DECATUR, IL 62521 weather forecast Day 3, 18 hours 4 PM 81° 81° Partly Cloudy W   9 46% 58°
DECATUR, IL 62521 weather forecast Day 3, 21 hours 7 PM 74° 74° Partly Cloudy     W   6 59% 59°

DECATUR, IL extended weather forecast

Friday
29 AUG 2025
Saturday
30 AUG 2025
Sunday
31 AUG 2025
Monday
1 SEP 2025
Tuesday
2 SEP 2025
Low 57° Low 56° Low 55° Low 59° Low 58°
High 79° High 82° High 81° High 82° High 83°
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
15% Rain
Partly Cloudy
15% Rain
Partly Cloudy
23% Rain
Partly Cloudy
22% Rain
Partly Cloudy
27% Rain
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