DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
10:54 AM CDT MAR 30, 2026
Clear 72°F
Feels Like:	72°F
Dewpoint:	54°F
Rel. Hum.:	53%
Visibility:	10 miles
Wind:	SSW at 26 mph, gusts to 38
Pressure:	29.98 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

THIS AFTERNOON
Mostly sunny. Much warmer with highs in the lower 80s. Southwest winds around 20 mph with gusts up to 35 mph.

TONIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s. South winds 15 to 20 mph with gusts up to 30 mph.

TUESDAY
Partly sunny with a chance of showers and thunderstorms. Breezy with highs in the lower 80s. Southwest winds 20 to 25 mph with gusts up to 35 mph. Chance of rain 30 percent.

TUESDAY NIGHT
Showers. Thunderstorms, mainly in the evening. Cooler with lows in the upper 40s. Southwest winds 15 to 20 mph, becoming north after midnight. Chance of rain 90 percent.

WEDNESDAY
Showers with a chance of thunderstorms. Much cooler with highs in the lower 60s. East winds around 15 mph with gusts up to 25 mph. Chance of rain 90 percent.

WEDNESDAY NIGHT
A chance of thunderstorms. Rain. Lows in the mid 50s. Chance of rain 90 percent.

THURSDAY
A chance of thunderstorms in the morning. Rain, breezy and not as cool with highs in the lower 70s. Chance of rain 90 percent.

THURSDAY NIGHT
Rain, mainly in the evening. Lows in the mid 50s. Chance of rain 90 percent.

FRIDAY
Mostly cloudy with a chance of rain. Highs in the lower 70s. Chance of rain 50 percent.

FRIDAY NIGHT
Mostly cloudy. A chance of rain in the evening, then rain likely after midnight. Lows in the mid 50s. Chance of rain 60 percent.

SATURDAY
Rain likely. Breezy with highs in the upper 60s. Chance of rain 60 percent.

SATURDAY NIGHT
Mostly cloudy with a 40 percent chance of rain. Much cooler with lows in the upper 30s.

SUNDAY
Partly sunny and breezy, cooler with highs in the lower 50s.

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 3/29/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Monday
30 MAR 2026

12 AM

56°

53°

Partly Cloudy

3%

0% Thunder
( 8% severe)

SSW 14

59%

42°

Low 54°

3 AM

55°

51°

Mostly Cloudy

SSW 14

66%

44°

High 79°

6 AM

56°

52°

Mostly Cloudy

3%

0% Thunder
( 12% severe)

SSW 15

72%

47°

Mostly Cloudy

Breezy

9 AM

64°

62°

Mostly Cloudy

SSW 17

65%

52°

12 PM

75°

75°

Partly Cloudy

2%

0% Thunder
( 11% severe)

SSW 20

50%

55°

3 PM

78°

79°

Partly Cloudy

SSW 18

47%

56°

6 PM

74°

74°

Partly Cloudy

3%

0% Thunder
( 8% severe)

S 15

55%

57°

9 PM

69°

69°

Partly Cloudy

SSW 17

66%

57°

Tuesday
31 MAR 2026

12 AM

67°

67°

Mostly Cloudy

8%

0% Thunder
( 13% severe)

SSW 18

68%

56°

Low 61°

3 AM

64°

62°

Partly Cloudy

SSW 17

73%

55°

High 81°

6 AM

62°

60°

Partly Cloudy

20%
RAIN
<.01 in

0% Thunder
( 21% severe)

SSW 18

78%

55°

Mostly Cloudy

Chance of Rain

Windy

9 AM

70°

70°

Mostly Cloudy

SSW 22

63%

57°

12 PM

78°

79°

Mostly Cloudy

43%
RAIN
1–2 in

0% Thunder
( 30% severe)

SW 24

48%

57°

3 PM

79°

80°

Mostly Cloudy

SW 22

45%

56°

6 PM

73°

73°

Mostly Cloudy

66%
RAIN
***

0% Thunder
( 31% severe)

SW 16

53%

55°

9 PM

66°

66°

Mostly Cloudy

SW 14

65%

54°


DECATUR, IL extended weather forecast
Wednesday 1 APR 2026	Thursday 2 APR 2026	Friday 3 APR 2026	Saturday 4 APR 2026	Sunday 5 APR 2026
Low 56°	Low 60°	Low 59°	Low 55°	Low 37°
High 73°	High 77°	High 75°	High 66°	High 57°

Overcast 70% Rain	Overcast 84% Rain	Overcast 74% Rain	Overcast 60% Rain	Clear 18% Rain

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