DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

4:54 AM CDT JUL 4, 2025
Clear
68°F
Feels Like: 68°F
Dewpoint: 64°F
Rel. Hum.: 87%
Visibility: 10 miles
Wind: Calm
Pressure: 30.09 inches
Last 72 hours

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DECATUR, IL 62521
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly sunny. Highs in the lower 90s. South winds 5 to 10 mph.
TONIGHT
Mostly clear. Lows in the lower 70s. South winds around 5 mph.
SATURDAY
Mostly sunny. Highs in the lower 90s. South winds 10 to 15 mph.
SATURDAY NIGHT
Partly cloudy. Lows in the lower 70s. South winds 5 to 10 mph.
SUNDAY
Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Humid with highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.
SUNDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of rain 50 percent.
MONDAY
Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent.
MONDAY NIGHT
Mostly clear. Lows in the upper 60s.
TUESDAY
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent.
TUESDAY NIGHT
Mostly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of rain 30 percent.
WEDNESDAY THROUGH THURSDAY
Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Lows in the upper 60s. Chance of rain 50 percent.

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  7/ 3/2025
Friday
4 JUL 2025
DECATUR, IL 62521 weather forecast Day 1, 0 hours 1 AM 75° 75° Clear 0%

0% Thunder
( 2% severe)
S   2 74% 66°
Low 72° DECATUR, IL 62521 weather forecast Day 1, 3 hours 4 AM 73° 73° Partly Cloudy S   3 79% 66°
High 93° DECATUR, IL 62521 weather forecast Day 1, 6 hours 7 AM 74° 74° Partly Cloudy 1%

0% Thunder
( 1% severe)
S   3 82% 68°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 1, 9 hours 10 AM 87° 91° Partly Cloudy SSW   7 55% 69°
DECATUR, IL 62521 weather forecast Day 1, 12 hours 1 PM 90° 93° Partly Cloudy 0%

0% Thunder
( 6% severe)
S   8 47% 67°
DECATUR, IL 62521 weather forecast Day 1, 15 hours 4 PM 92° 95° Clear S   8 43% 66°
DECATUR, IL 62521 weather forecast Day 1, 18 hours 7 PM 89° 92° Clear 0%

0% Thunder
( 5% severe)
S   7 48% 67°
DECATUR, IL 62521 weather forecast Day 1, 21 hours 10 PM 80° 82° Clear SSE   6 65% 67°
Saturday
5 JUL 2025
DECATUR, IL 62521 weather forecast Day 2, 0 hours 1 AM 76° 78° Partly Cloudy 0%

0% Thunder
( 0% severe)
S   6 71% 66°
Low 71° DECATUR, IL 62521 weather forecast Day 2, 3 hours 4 AM 74° 74° Clear S   6 76% 66°
High 93° DECATUR, IL 62521 weather forecast Day 2, 6 hours 7 AM 74° 74° Clear 0%

0% Thunder
( 1% severe)
S   7 82% 68°

Partly Cloudy



DECATUR, IL 62521 weather forecast Day 2, 9 hours 10 AM 86° 90° Partly Cloudy SSW   9 57% 69°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 1 PM 91° 94° Partly Cloudy 4%

0% Thunder
( 9% severe)
SSW   12 45% 67°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 4 PM 92° 96° Partly Cloudy SSW   12 44% 67°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 7 PM 89° 93° Partly Cloudy 5%

0% Thunder
( 9% severe)
SSW   9 50% 68°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 10 PM 82° 85° Partly Cloudy S   8 63% 68°

DECATUR, IL extended weather forecast

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Low 69° Low 72° Low 69° Low 67° Low 70°
High 92° High 90° High 90° High 91° High 87°
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
Clear
14% Rain
Overcast
67% Rain
Partly Cloudy
32% Rain
Partly Cloudy
30% Rain
Partly Cloudy
50% Rain
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