DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
5:54 AM CST JAN 15, 2026
Clear 14°F
Feels Like:	2°F
Dewpoint:	5°F
Rel. Hum.:	63%
Visibility:	10 miles
Wind:	NNW at 9 mph
Pressure:	30.07 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Weather Map

(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

TODAY
Sunny. Highs in the upper 20s. Northwest winds 5 to 10 mph with gusts up to 20 mph, becoming southwest this afternoon. Wind chill values as low as zero this morning.

TONIGHT
Snow. Snow accumulation around an inch. Not as cool with lows in the mid 20s. Temperature rising to around 30 after midnight. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of snow 80 percent.

FRIDAY
Mostly cloudy. Not as cool with highs in the upper 30s. West winds 15 to 20 mph with gusts up to 30 mph.

FRIDAY NIGHT
Mostly cloudy. Scattered snow showers after midnight. Little or no snow accumulation. Lows around 17. West winds 10 to 15 mph with gusts up to 25 mph. Chance of snow 30 percent.

SATURDAY
Partly sunny in the morning, then becoming mostly cloudy. Scattered flurries. Much cooler with highs in the lower 20s. West winds 15 to 20 mph with gusts up to 30 mph.

SATURDAY NIGHT
Mostly cloudy with scattered flurries in the evening, then partly cloudy after midnight. Lows around 10 above. Wind chill values as low as 5 below after midnight.

SUNDAY
Partly sunny. Highs in the lower 20s. Wind chill values as low as 5 below in the morning.

SUNDAY NIGHT AND MARTIN LUTHER KING JR DAY
Partly cloudy. Lows around 10 above. Highs around 20. Wind chill values as low as 10 below.

MONDAY NIGHT AND TUESDAY
Mostly clear. Lows around 5 above. Highs in the lower 20s. Wind chill values as low as 10 below.

TUESDAY NIGHT AND WEDNESDAY
Partly cloudy. Lows 10 to 15. Highs in the mid 30s.

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 PM EST 1/14/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
15 JAN 2026

12 AM

20°

7°

Partly Cloudy

0%

0% Thunder
( 0% severe)

NNW 14

49%

6°

Low 15°

3 AM

18°

5°

Partly Cloudy

NNW 13

52%

5°

High 28°

6 AM

16°

3°

Clear

0%

0% Thunder
( 0% severe)

NW 12

57%

5°

Clear

9 AM

18°

6°

Clear

NW 10

52%

5°

12 PM

23°

13°

Clear

1%

0% Thunder
( 0% severe)

W 9

41%

5°

3 PM

27°

17°

Clear

WSW 10

34%

5°

6 PM

25°

16°

Mostly Cloudy

41%
SNOW
.1–1 in

0% Thunder
( 1% severe)

SSW 8

44%

8°

9 PM

25°

14°

Mostly Cloudy

SSW 12

48%

10°

Friday
16 JAN 2026

12 AM

27°

16°

Mostly Cloudy

32%
SNOW
.1–1 in

0% Thunder
( 1% severe)

SSW 14

63%

17°

Low 23°

3 AM

29°

18°

Mostly Cloudy

SW 14

67%

20°

High 39°

6 AM

29°

18°

Mostly Cloudy

5%

0% Thunder
( 0% severe)

WSW 14

73%

22°

Mostly Cloudy

Breezy

9 AM

33°

23°

Mostly Cloudy

W 15

74%

26°

12 PM

37°

27°

Mostly Cloudy

8%

0% Thunder
( 5% severe)

W 18

69%

28°

3 PM

38°

29°

Mostly Cloudy

W 17

64%

27°

6 PM

34°

25°

Mostly Cloudy

15%
SNOW
<.1 in

0% Thunder
( 2% severe)

W 12

72%

26°

9 PM

31°

21°

Mostly Cloudy

W 13

74%

24°


DECATUR, IL extended weather forecast
Saturday 17 JAN 2026	Sunday 18 JAN 2026	Monday 19 JAN 2026	Tuesday 20 JAN 2026	Wednesday 21 JAN 2026
Low 19°	Low 7°	Low 7°	Low 8°	Low 17°
High 23°	High 23°	High 16°	High 26°	High 38°

Overcast 36% Snow	Partly Cloudy 9% Snow	Partly Cloudy 10% Snow	Clear 5% Snow	Mostly Cloudy 13% Snow

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