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 JAN 8, 2026
Overcast Light Rain Mist 57°F
Feels Like:	53°F
Dewpoint:	55°F
Rel. Hum.:	93%
Visibility:	3 miles
Wind:	SSE at 18 mph, gusts to 28
Pressure:	29.61 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 with rain with a chance of thunderstorms this evening, then partly cloudy with a chance of rain with a slight chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds. Windy with lows in the lower 40s. Southwest winds 20 to 30 mph with gusts up to 40 mph. Chance of rain 90 percent.

FRIDAY
Mostly cloudy in the morning, then becoming partly sunny. Breezy, cooler. Near steady temperature in the mid 40s. West winds 15 to 25 mph, becoming northwest 10 to 15 mph in the afternoon.

FRIDAY NIGHT
Mostly cloudy. Lows in the mid 30s. Northeast winds around 5 mph.

SATURDAY
Mostly cloudy with a chance of rain in the morning, then mostly sunny in the afternoon. Highs in the lower 40s. West winds 15 to 20 mph. Chance of rain 40 percent.

SATURDAY NIGHT
Mostly cloudy. Much cooler with lows around 20. West winds 15 to 20 mph with gusts up to 30 mph.

SUNDAY
Mostly sunny. Cooler with highs in the lower 30s.

SUNDAY NIGHT
Mostly clear. Lows in the lower 20s.

MONDAY AND MONDAY NIGHT
Partly cloudy. Highs in the lower 40s. Lows in the lower 30s.

TUESDAY
Partly sunny in the morning, then becoming mostly cloudy. Highs in the upper 40s.

TUESDAY NIGHT
Mostly cloudy with a 30 percent chance of rain. Lows in the lower 30s.

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

THURSDAY
Partly sunny. Highs in the lower 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 AM EST 1/ 8/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
8 JAN 2026

12 PM

55°

51°

Mostly Cloudy

87%
RAIN
***

0% Thunder
( 19% severe)

S 16

83%

50°

High 63°

3 PM

58°

54°

Mostly Cloudy

SSE 21

83%

53°

Mostly Cloudy

Rain

Breezy

6 PM

60°

56°

Mostly Cloudy

96%
RAIN
***

0% Thunder
( 31% severe)

S 22

90%

57°

9 PM

62°

59°

Mostly Cloudy

SSW 22

87%

58°

Friday
9 JAN 2026

12 AM

61°

58°

Mostly Cloudy

39%
RAIN
.5–1 in

0% Thunder
( 13% severe)

SSW 20

87%

57°

Low 44°

3 AM

58°

54°

Mostly Cloudy

SW 17

87%

54°

High 51°

6 AM

50°

44°

Mostly Cloudy

4%

0% Thunder
( 2% severe)

W 17

86%

46°

Mostly Cloudy

9 AM

46°

39°

Mostly Cloudy

WNW 15

83%

41°

12 PM

46°

40°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

NW 13

76%

39°

3 PM

47°

42°

Mostly Cloudy

NNW 10

71%

38°

6 PM

43°

39°

Mostly Cloudy

2%

0% Thunder
( 0% severe)

N 6

86%

39°

9 PM

41°

38°

Mostly Cloudy

NE 5

86%

37°

Saturday
10 JAN 2026

12 AM

40°

37°

Mostly Cloudy

23%
RAIN
.5–1 in

0% Thunder
( 1% severe)

ENE 5

89%

37°

Low 34°

3 AM

39°

36°

Mostly Cloudy

E 5

92%

37°

High 43°

6 AM

38°

34°

Mostly Cloudy

36%
RAIN
>2 in

0% Thunder
( 1% severe)

WNW 6

92%

36°

Mostly Cloudy

Chance of Rain

9 AM

39°

32°

Mostly Cloudy

WNW 10

85%

35°

12 PM

40°

31°

Partly Cloudy

13%
RAIN/SNOW
<.05 in

0% Thunder
( 0% severe)

WNW 16

73%

32°

3 PM

40°

31°

Partly Cloudy

W 16

62%

28°

6 PM

35°

26°

Mostly Cloudy

W 14

69%

26°


DECATUR, IL extended weather forecast
Sunday 11 JAN 2026	Monday 12 JAN 2026	Tuesday 13 JAN 2026	Wednesday 14 JAN 2026	Thursday 15 JAN 2026
Low 22°	Low 20°	Low 29°	Low 28°	Low 22°
High 28°	High 42°	High 44°	High 35°	High 30°

Mostly Cloudy 31% Snow	Clear 5% Snow	Mostly Cloudy 13% Rain	Overcast 30% Rain/Snow	Mostly Cloudy 22% Snow

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