DECATUR, IL 62521 Weather Forecast & Current Conditions

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DECATUR, IL
Current Weather

6:54 PM CST NOV 6, 2025
Clear
54°F
Feels Like: 50°F
Dewpoint: 30°F
Rel. Hum.: 40%
Visibility: 10 miles
Wind: SSE at 12 mph
Pressure: 29.94 inches
Last 72 hours

Local Area Snow Depth

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DECATUR, IL 62521
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Not as cool with lows in the upper 40s. Temperature rising into the mid 50s after midnight. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.
FRIDAY
Partly sunny in the morning, then clearing. Highs in the upper 60s. West winds 15 to 20 mph.
FRIDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Cooler with lows in the upper 30s. West winds 5 to 10 mph.
SATURDAY
Partly sunny in the morning, then mostly cloudy with a chance of rain in the afternoon. Cooler with highs in the upper 50s. West winds 5 to 10 mph. Chance of rain 40 percent.
SATURDAY NIGHT
Mostly cloudy. Rain likely in the evening. Lows around 30. Northwest winds 15 to 20 mph. Chance of rain 70 percent.
SUNDAY
Partly sunny with a chance of flurries. Breezy and much cooler with highs in the upper 30s. Temperature falling into the mid 30s in the afternoon.
SUNDAY NIGHT
Partly cloudy. Lows in the lower 20s.
MONDAY AND MONDAY NIGHT
Mostly clear. Highs in the upper 30s. Lows in the lower 20s.
VETERANS DAY
Partly sunny. Not as cool with highs around 50.
TUESDAY NIGHT
Partly cloudy in the evening, then clearing. Not as cool with lows in the upper 30s.
WEDNESDAY THROUGH THURSDAY
Mostly clear. Highs in the upper 50s. Lows in the mid 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 AM EST 11/ 6/2025
Thursday
6 NOV 2025
DECATUR, IL 62521 weather forecast Day 1, 12 hours 12 PM 59° 56° Clear 0%

0% Thunder
( 0% severe)
SSE   14 34% 31°
High 62° DECATUR, IL 62521 weather forecast Day 1, 15 hours 3 PM 61° 59° Partly Cloudy SSE   16 31% 30°
Increasing Clouds



DECATUR, IL 62521 weather forecast Day 1, 18 hours 6 PM 54° 50° Mostly Cloudy 6%

0% Thunder
( 2% severe)
SSE   13 43% 32°
DECATUR, IL 62521 weather forecast Day 1, 21 hours 9 PM 51° 46° Mostly Cloudy SSE   15 54% 35°
Friday
7 NOV 2025
DECATUR, IL 62521 weather forecast Day 2, 0 hours 12 AM 52° 47° Mostly Cloudy 65%
RAIN
1–2 in
0% Thunder
( 15% severe)
S   15 63% 40°
Low 50° DECATUR, IL 62521 weather forecast Day 2, 3 hours 3 AM 54° 50° Mostly Cloudy SSW   16 80% 48°
High 69° DECATUR, IL 62521 weather forecast Day 2, 6 hours 6 AM 56° 53° Mostly Cloudy 14%
RAIN
.01–.1 in
0% Thunder
( 1% severe)
WSW   14 83% 51°

Decreasing Clouds



DECATUR, IL 62521 weather forecast Day 2, 9 hours 9 AM 60° 57° Mostly Cloudy W   15 78% 53°
DECATUR, IL 62521 weather forecast Day 2, 12 hours 12 PM 66° 66° Clear 1%

0% Thunder
( 1% severe)
W   16 47% 45°
DECATUR, IL 62521 weather forecast Day 2, 15 hours 3 PM 67° 67° Clear W   16 37% 40°
DECATUR, IL 62521 weather forecast Day 2, 18 hours 6 PM 57° 55° Clear 0%

0% Thunder
( 0% severe)
W   10 53% 40°
DECATUR, IL 62521 weather forecast Day 2, 21 hours 9 PM 51° 48° Clear W   8 63% 39°
Saturday
8 NOV 2025
DECATUR, IL 62521 weather forecast Day 3, 0 hours 12 AM 46° 43° Clear 0%

0% Thunder
( 0% severe)
W   6 76% 39°
Low 39° DECATUR, IL 62521 weather forecast Day 3, 3 hours 3 AM 43° 41° Partly Cloudy W   3 82% 38°
High 60° DECATUR, IL 62521 weather forecast Day 3, 6 hours 6 AM 40° 38° Mostly Cloudy 1%

0% Thunder
( 1% severe)
W   3 89% 37°

Mostly Cloudy

Rain Likely

DECATUR, IL 62521 weather forecast Day 3, 9 hours 9 AM 49° 47° Mostly Cloudy W   5 71% 40°
DECATUR, IL 62521 weather forecast Day 3, 15 hours 12 PM 57° 55° Mostly Cloudy 52%
RAIN
1–2 in
0% Thunder
( 2% severe)
WSW   8 51% 39°
DECATUR, IL 62521 weather forecast Day 3, 18 hours 3 PM 58° 56° Mostly Cloudy WSW   10 49% 39°
DECATUR, IL 62521 weather forecast Day 3, 21 hours 6 PM 51° 47° Mostly Cloudy     NNE   12 66% 40°

DECATUR, IL extended weather forecast

Sunday
9 NOV 2025
Monday
10 NOV 2025
Tuesday
11 NOV 2025
Wednesday
12 NOV 2025
Thursday
13 NOV 2025
Low 32° Low 22° Low 27° Low 39° Low 40°
High 40° High 41° High 52° High 60° High 61°
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
74% Rain/Snow
Clear
4% Snow
Partly Cloudy
4% Rain/Snow
Clear
13% Rain
Clear
11% Rain
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