DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
3:54 PM CST NOV 30, 2025
Overcast 23°F
Feels Like:	10°F
Dewpoint:	18°F
Rel. Hum.:	79%
Visibility:	10 miles
Wind:	W at 15 mph, gusts to 22
Pressure:	30.40 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

62521 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	DECATUR, IL 62521 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Mostly cloudy. Lows around 15. Northwest winds 5 to 10 mph, becoming north after midnight.

MONDAY
Snow in the afternoon. Little or no snow accumulation. Highs in the upper 20s. Southeast winds around 5 mph. Chance of snow near 100 percent.

MONDAY NIGHT
Snow, mainly in the evening. Snow accumulation of 1 to 3 inches. Lows around 17. Light and variable winds, becoming northwest around 5 mph after midnight. Chance of snow near 100 percent.

TUESDAY
Partly sunny. Highs in the mid 20s. West winds around 5 mph.

TUESDAY NIGHT
Mostly cloudy. Near steady temperature around 18. South winds 5 to 10 mph.

WEDNESDAY AND WEDNESDAY NIGHT
Mostly cloudy. Highs in the lower 30s. Lows 5 to 10 above. Wind chill values as low as 5 below.

THURSDAY
Mostly sunny. Much cooler with highs around 15. Wind chill values as low as 10 below in the morning.

THURSDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Cold with lows around zero. Temperature rising to around 10 above after midnight.

FRIDAY
Mostly cloudy. A chance of snow in the afternoon. Not as cool with highs in the upper 20s. Chance of snow 40 percent. Wind chill values as low as 5 below in the morning.

FRIDAY NIGHT
Mostly cloudy. A chance of snow in the evening. Not as cool. Near steady temperature in the lower 20s. Chance of snow 30 percent.

SATURDAY AND SATURDAY NIGHT
Mostly cloudy. Highs in the lower 30s. Lows in the lower 20s.

SUNDAY
Mostly cloudy. Highs around 30.

62521 WEATHER SATELLITE LOOPS

Visible Weather Satellite
DECATUR, IL 62521

Infrared Weather Satellite
DECATUR, IL 62521

62521 WEATHER RADAR LOOP

NEXRAD Weather Radar
DECATUR, IL 62521

MOS COMPUTER WEATHER FORECAST

DECATUR, IL 3 hourly weather forecast

weather forecast created 7:00 AM EST 11/30/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
30 NOV 2025

12 PM

23°

9°

Mostly Cloudy

11%
SNOW
<.1 in

0% Thunder
( 0% severe)

W 18

87%

20°

High 25°

3 PM

24°

11°

Mostly Cloudy

WNW 15

83%

20°

Mostly Cloudy

6 PM

23°

12°

Mostly Cloudy

2%

0% Thunder
( 0% severe)

WNW 10

87%

20°

9 PM

22°

15°

Mostly Cloudy

NW 6

87%

19°

Monday
1 DEC 2025

12 AM

20°

16°

Mostly Cloudy

1%

0% Thunder
( 0% severe)

NNW 2

91%

18°

Low 16°

3 AM

18°

13°

Mostly Cloudy

N 1

95%

17°

High 29°

6 AM

18°

13°

Mostly Cloudy

14%
SNOW
<.1 in

0% Thunder
( 0% severe)

E 1

95%

17°

Mostly Cloudy

Snow Likely

9 AM

22°

17°

Mostly Cloudy

E 3

95%

21°

12 PM

27°

22°

Mostly Cloudy

70%
SNOW
.1–1 in

0% Thunder
( 1% severe)

SE 5

87%

24°

3 PM

29°

25°

Mostly Cloudy

E 3

84%

25°

6 PM

26°

23°

Overcast

87%
SNOW
***

0% Thunder
( 1% severe)

E 2

96%

25°

9 PM

26°

23°

Mostly Cloudy

NNW 2

96%

25°

Tuesday
2 DEC 2025

12 AM

24°

18°

Mostly Cloudy

21%
SNOW
.1–1 in

0% Thunder
( 0% severe)

WNW 5

100%

24°

Low 16°

3 AM

22°

15°

Mostly Cloudy

NW 6

95%

21°

High 25°

6 AM

19°

10°

Mostly Cloudy

2%

0% Thunder
( 0% severe)

NW 7

91%

17°

Mostly Cloudy

9 AM

20°

11°

Mostly Cloudy

NW 7

91%

18°

12 PM

23°

15°

Mostly Cloudy

5%

0% Thunder
( 0% severe)

W 7

83%

19°

3 PM

24°

17°

Mostly Cloudy

WSW 6

79%

19°

6 PM

20°

12°

Mostly Cloudy

SW 6

87%

17°


DECATUR, IL extended weather forecast
Wednesday 3 DEC 2025	Thursday 4 DEC 2025	Friday 5 DEC 2025	Saturday 6 DEC 2025	Sunday 7 DEC 2025
Low 13°	Low 12°	Low 9°	Low 21°	Low 26°
High 34°	High 19°	High 29°	High 36°	High 38°

Mostly Cloudy 21% Snow	Mostly Cloudy 33% Snow	Overcast 39% Snow	Overcast 46% Snow	Overcast 59% Rain

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