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 AUG 23, 2026
Clear 79°F
Feels Like:	79°F
Dewpoint:	54°F
Rel. Hum.:	42%
Visibility:	10 miles
Wind:	NNW at 9 mph
Pressure:	30.08 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 2026 Hurricanes	DECATUR, IL 62521 Weather Forecast	Snowfall Forecast pages Snow Depth pages

THIS AFTERNOON
Sunny. Near steady temperature in the upper 70s. Northwest winds around 10 mph.

TONIGHT
Mostly clear. Lows in the mid 50s. North winds 5 to 10 mph, becoming west after midnight.

MONDAY
Mostly sunny. Highs in the lower 80s. Light and variable winds, becoming northwest around 5 mph in the afternoon.

MONDAY NIGHT
Mostly clear. Lows in the upper 50s. East winds around 5 mph.

TUESDAY
Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph.

TUESDAY NIGHT AND WEDNESDAY
Partly cloudy. Lows in the lower 60s. Highs in the upper 80s.

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

THURSDAY THROUGH FRIDAY
Mostly clear. Highs in the mid 80s. Lows in the lower 60s.

FRIDAY NIGHT AND SATURDAY
Partly cloudy. Lows in the lower 60s. Highs in the mid 80s.

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 8/23/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

TIME
CDT

TEMP
(deg. F)

FEELS
LIKE

CLOUD
COVER

PRECIP
PROB.

THUNDER
PROB.

WIND
dir./mph

REL
HUM

DEWPT
(deg. F)

Sunday
23 AUG 2026

1 PM

76°

78°

Clear

0% Thunder
( 1% severe)

NW 10

52%

57°

High 77°

4 PM

76°

78°

Clear

NW 12

50%

56°

Partly Cloudy

7 PM

73°

Partly Cloudy

0% Thunder
( 1% severe)

NNW 8

57%

57°

10 PM

64°

65°

Partly Cloudy

N 3

78%

57°

Monday
24 AUG 2026

1 AM

60°

61°

Partly Cloudy

0% Thunder
( 1% severe)

CALM

87%

56°

Low 57°

4 AM

58°

59°

Partly Cloudy

CALM

93%

56°

High 79°

7 AM

58°

59°

Partly Cloudy

0% Thunder
( 1% severe)

CALM

93%

56°

Partly Cloudy

10 AM

71°

Partly Cloudy

CALM

63%

58°

1 PM

76°

78°

Partly Cloudy

0% Thunder
( 1% severe)

NW 2

52%

57°

4 PM

77°

79°

Partly Cloudy

NA 2

48%

56°

7 PM

74°

Partly Cloudy

0% Thunder
( 1% severe)

NE 3

57%

58°

10 PM

66°

Clear

E 3

73%

57°

Tuesday
25 AUG 2026

1 AM

62°

63°

Partly Cloudy

0% Thunder
( 1% severe)

E 3

84%

57°

Low 58°

4 AM

60°

61°

Partly Cloudy

ESE 3

90%

57°

High 81°

7 AM

60°

Partly Cloudy

0% Thunder
( 1% severe)

ESE 5

90%

57°

Partly Cloudy

10 AM

72°

Clear

SE 5

64%

59°

1 PM

79°

80°

Partly Cloudy

0% Thunder
( 1% severe)

SE 3

49%

58°

4 PM

79°

80°

Partly Cloudy

SE 3

49%

58°

7 PM

76°

78°

Partly Cloudy

ESE 6

58%

60°


DECATUR, IL extended weather forecast
Wednesday 26 AUG 2026	Thursday 27 AUG 2026	Friday 28 AUG 2026	Saturday 29 AUG 2026	Sunday 30 AUG 2026
Low 61°	Low 63°	Low 60°	Low 60°	Low 60°
High 87°	High 85°	High 83°	High 80°	High 79°

Partly Cloudy 21% Rain	Partly Cloudy 43% Rain	Clear 15% Rain	Partly Cloudy 25% Rain	Overcast 41% Rain

WEATHER SELECT BOX EXAMPLES:

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STATE WEATHER MAP:

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DECATUR, IL 62521 Weather Forecast & Current Conditions

DECATUR, IL Current Weather

DECATUR, IL 62521 Weather Forecast

DECATUR, IL 3 hourly weather forecast

DECATUR, IL extended weather forecast

DECATUR, IL
Current Weather

DECATUR, IL 62521
Weather Forecast