DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
12:54 PM CDT MAY 23, 2026
Broken Clouds 72°F
Feels Like:	72°F
Dewpoint:	61°F
Rel. Hum.:	68%
Visibility:	10 miles
Wind:	S at 3 mph
Pressure:	30.00 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

THIS AFTERNOON
Mostly cloudy. Highs in the mid 70s. Southwest winds 5 to 10 mph.

TONIGHT
Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the lower 60s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.

SUNDAY
Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then mostly sunny in the afternoon. Highs in the upper 70s. Northwest winds around 5 mph, becoming north in the afternoon. Chance of rain 40 percent.

SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. East winds around 5 mph.

MEMORIAL DAY
Partly sunny. Highs in the lower 80s. Southeast winds 5 to 10 mph.

MONDAY NIGHT AND TUESDAY
Mostly cloudy. Lows in the lower 60s. Highs in the lower 80s.

TUESDAY NIGHT AND WEDNESDAY
Showers likely with a chance of thunderstorms. Lows in the mid 60s. Highs around 80. Chance of rain 70 percent.

WEDNESDAY NIGHT
Mostly cloudy. A chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 40 percent.

THURSDAY AND THURSDAY NIGHT
Mostly cloudy. A chance of showers. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 50 percent.

FRIDAY
Mostly sunny. Highs in the upper 70s.

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 8:00 AM EDT 5/23/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
23 MAY 2026

1 PM

72°

72°

Mostly Cloudy

9%

0% Thunder
( 26% severe)

W 6

68%

61°

High 76°

4 PM

75°

75°

Partly Cloudy

WSW 6

62%

61°

Mostly Cloudy

7 PM

74°

74°

Partly Cloudy

7%

0% Thunder
( 18% severe)

SW 5

64%

61°

10 PM

66°

66°

Mostly Cloudy

S 3

84%

61°

Sunday
24 MAY 2026

1 AM

63°

64°

Mostly Cloudy

40%
RAIN
<.01 in

0% Thunder
( 24% severe)

SSW 5

90%

60°

Low 60°

4 AM

62°

62°

Mostly Cloudy

WSW 5

93%

60°

High 77°

7 AM

63°

64°

Mostly Cloudy

33%
RAIN
.25–.5 in

0% Thunder
( 12% severe)

W 5

93%

61°

Mostly Cloudy

Chance of Rain

10 AM

69°

69°

Mostly Cloudy

NW 2

78%

62°

1 PM

74°

74°

Partly Cloudy

7%

0% Thunder
( 17% severe)

N 6

62%

60°

4 PM

77°

79°

Partly Cloudy

NA 6

52%

58°

7 PM

74°

74°

Clear

1%

0% Thunder
( 5% severe)

NNE 3

59%

59°

10 PM

65°

65°

Clear

CALM

75%

57°

Monday
25 MAY 2026

1 AM

61°

62°

Partly Cloudy

1%

0% Thunder
( 1% severe)

CALM

87%

57°

Low 58°

4 AM

59°

60°

Partly Cloudy

CALM

90%

56°

High 81°

7 AM

61°

61°

Partly Cloudy

1%

0% Thunder
( 2% severe)

ENE 5

90%

58°

Mostly Cloudy

10 AM

73°

73°

Partly Cloudy

E 7

68%

62°

1 PM

78°

79°

Mostly Cloudy

3%

0% Thunder
( 9% severe)

E 9

54%

60°

4 PM

80°

81°

Mostly Cloudy

E 9

49%

59°

7 PM

76°

78°

Mostly Cloudy

ESE 8

60%

61°


DECATUR, IL extended weather forecast
Tuesday 26 MAY 2026	Wednesday 27 MAY 2026	Thursday 28 MAY 2026	Friday 29 MAY 2026	Saturday 30 MAY 2026
Low 60°	Low 65°	Low 65°	Low 65°	Low 59°
High 80°	High 80°	High 82°	High 82°	High 76°

Mostly Cloudy 33% Rain	Overcast 65% Rain	Overcast 66% Rain	Overcast 53% Rain	Overcast 36% Rain

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