DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
6:54 AM CST JAN 7, 2026
Fog 34°F
Feels Like:	32°F
Dewpoint:	34°F
Rel. Hum.:	100%
Visibility:	1/4 miles
Wind:	SE at 3 mph
Pressure:	29.94 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

REST OF TODAY
Areas of dense fog this morning. Mostly sunny. Highs in the mid 50s. Southwest winds around 5 mph, becoming south this afternoon.

TONIGHT
Mostly clear in the evening, then becoming mostly cloudy. Lows in the lower 40s. South winds around 10 mph with gusts up to 20 mph.

THURSDAY
Cloudy. Rain in the afternoon. Highs in the lower 60s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 80 percent.

THURSDAY NIGHT
Mostly cloudy. Rain, mainly in the evening. Lows in the upper 40s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent.

FRIDAY
Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 50s. Temperature falling into the upper 40s in the afternoon. West winds 10 to 15 mph, becoming northwest in the afternoon.

FRIDAY NIGHT
Mostly cloudy. A chance of rain after midnight. Cooler with lows in the upper 30s. Chance of rain 50 percent.

SATURDAY
Mostly cloudy in the morning, then becoming partly sunny. A chance of rain. A chance of snow in the afternoon. Cooler with highs in the lower 40s. Temperature falling into the upper 30s in the afternoon. Chance of precipitation 40 percent.

SATURDAY NIGHT
Mostly cloudy. Much cooler with lows in the lower 20s.

SUNDAY
Mostly sunny. Cooler with highs around 30.

SUNDAY NIGHT AND MONDAY
Mostly clear. Lows around 20. Highs in the lower 40s.

MONDAY NIGHT AND TUESDAY
Partly cloudy. Lows in the upper 20s. Highs in the mid 40s.

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/ 6/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
7 JAN 2026

12 AM

40°

35°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

WNW 8

85%

36°

Low 34°

3 AM

37°

32°

Mostly Cloudy

WNW 6

92%

35°

High 54°

6 AM

35°

33°

Partly Cloudy

0%

0% Thunder
( 0% severe)

W 2

92%

33°

Partly Cloudy

9 AM

38°

34°

Partly Cloudy

SSW 5

85%

34°

12 PM

49°

45°

Partly Cloudy

0%

0% Thunder
( 0% severe)

SSW 8

63%

37°

3 PM

54°

51°

Clear

S 10

52%

37°

6 PM

47°

42°

Partly Cloudy

0%

0% Thunder
( 0% severe)

S 10

71%

38°

9 PM

44°

38°

Partly Cloudy

S 10

79%

38°

Thursday
8 JAN 2026

12 AM

43°

37°

Partly Cloudy

1%

0% Thunder
( 0% severe)

S 10

82%

38°

Low 41°

3 AM

43°

37°

Mostly Cloudy

S 12

82%

38°

High 61°

6 AM

44°

38°

Mostly Cloudy

38%
RAIN
.1–.25 in

0% Thunder
( 1% severe)

SSE 13

82%

39°

Mostly Cloudy

Rain Likely

9 AM

48°

42°

Mostly Cloudy

SSE 14

86%

44°

12 PM

54°

50°

Mostly Cloudy

85%
RAIN
***

0% Thunder
( 6% severe)

SSE 16

80%

48°

3 PM

57°

53°

Mostly Cloudy

SSE 18

80%

51°

6 PM

58°

54°

Mostly Cloudy

76%
RAIN
***

0% Thunder
( 19% severe)

S 18

90%

55°

9 PM

60°

57°

Mostly Cloudy

SSW 18

87%

56°


DECATUR, IL extended weather forecast
Friday 9 JAN 2026	Saturday 10 JAN 2026	Sunday 11 JAN 2026	Monday 12 JAN 2026	Tuesday 13 JAN 2026
Low 51°	Low 35°	Low 21°	Low 21°	Low 28°
High 51°	High 43°	High 30°	High 41°	High 42°

Overcast 95% Rain	Overcast 73% Rain/Snow	Mostly Cloudy 24% Snow	Clear 8% Snow	Mostly Cloudy 17% Rain/Snow

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