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 CDT MAR 10, 2026
Clear 59°F
Feels Like:	56°F
Dewpoint:	57°F
Rel. Hum.:	93%
Visibility:	10 miles
Wind:	SSW at 14 mph
Pressure:	29.85 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
Mostly sunny. A slight chance of showers and thunderstorms this afternoon. Highs in the upper 70s. South winds 15 to 20 mph. Chance of rain 20 percent.

TONIGHT
Partly cloudy with a chance of showers and thunderstorms in the evening, then showers with thunderstorms likely after midnight. Lows in the lower 50s. Southwest winds 15 to 20 mph with gusts up to 35 mph. Chance of rain near 100 percent.

WEDNESDAY
Showers with thunderstorms likely in the morning, then a chance of showers in the afternoon. Breezy and much cooler. Less humid with highs in the lower 60s. Temperature falling into the mid 40s in the afternoon. West winds around 20 mph, becoming northwest in the afternoon. Chance of rain 90 percent.

WEDNESDAY NIGHT
Mostly cloudy in the evening, then clearing. Breezy and much cooler with lows in the upper 20s. Northwest winds 15 to 25 mph, diminishing to 10 to 15 mph after midnight.

THURSDAY
Sunny, cooler with highs around 50. Northwest winds 5 to 10 mph, becoming southwest 10 to 15 mph in the afternoon.

THURSDAY NIGHT AND FRIDAY
Mostly cloudy and breezy. Lows in the lower 40s. Highs in the mid 50s.

FRIDAY NIGHT AND SATURDAY
Mostly cloudy. Lows in the mid 30s. Highs around 60.

SATURDAY NIGHT
Mostly cloudy. A chance of rain after midnight. Not as cool with lows in the mid 40s. Chance of rain 30 percent.

SUNDAY
Rain, windy. Near steady temperature around 50. Chance of rain 80 percent.

SUNDAY NIGHT
Mostly cloudy. A chance of rain and snow in the evening. Breezy and much cooler with lows around 20. Chance of precipitation 40 percent.

MONDAY
Partly sunny. Much cooler with 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 PM EST 3/ 9/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
10 MAR 2026

12 AM

64°

63°

Partly Cloudy

4%

0% Thunder
( 18% severe)

SSW 14

84%

59°

Low 60°

3 AM

62°

60°

Partly Cloudy

SSW 13

90%

59°

High 78°

6 AM

61°

59°

Partly Cloudy

3%

0% Thunder
( 9% severe)

SSW 12

93%

59°

Mostly Cloudy

Chance of Rain

9 AM

66°

66°

Mostly Cloudy

SSW 14

87%

62°

12 PM

73°

73°

Mostly Cloudy

28%
RAIN
<.01 in

0% Thunder
( 26% severe)

SSW 15

71%

63°

3 PM

76°

78°

Mostly Cloudy

S 17

64%

63°

6 PM

72°

72°

Mostly Cloudy

63%
RAIN
.1–.25 in

0% Thunder
( 45% severe)

S 16

73%

63°

9 PM

70°

70°

Mostly Cloudy

SSW 17

81%

64°

Wednesday
11 MAR 2026

12 AM

68°

68°

Mostly Cloudy

91%
RAIN
***

0% Thunder
( 56% severe)

SSW 16

84%

63°

Low 52°

3 AM

65°

65°

Mostly Cloudy

SW 16

90%

62°

High 64°

6 AM

62°

60°

Mostly Cloudy

97%
RAIN
***

0% Thunder
( 28% severe)

WSW 16

93%

60°

Mostly Cloudy

Rain

Breezy

9 AM

59°

56°

Mostly Cloudy

W 18

93%

57°

12 PM

52°

46°

Mostly Cloudy

58%
RAIN
>2 in

0% Thunder
( 3% severe)

NW 20

83%

47°

3 PM

48°

41°

Mostly Cloudy

NW 21

71%

39°

6 PM

44°

36°

Mostly Cloudy

3%

0% Thunder
( 0% severe)

NNW 18

68%

34°

9 PM

40°

31°

Mostly Cloudy

NNW 16

70%

31°


DECATUR, IL extended weather forecast
Thursday 12 MAR 2026	Friday 13 MAR 2026	Saturday 14 MAR 2026	Sunday 15 MAR 2026	Monday 16 MAR 2026
Low 30°	Low 38°	Low 35°	Low 49°	Low 22°
High 52°	High 57°	High 60°	High 56°	High 33°

Partly Cloudy 5% Rain/Snow	Partly Cloudy 9% Rain	Partly Cloudy 8% Rain	Mostly Cloudy 62% Rain	Overcast 39% Rain/Snow

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