DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
11:54 AM CDT AUG 20, 2026
Overcast 73°F
Feels Like:	73°F
Dewpoint:	68°F
Rel. Hum.:	84%
Visibility:	10 miles
Wind:	ENE at 5 mph
Pressure:	30.06 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
Mostly sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph.

TONIGHT
Mostly clear. Patchy fog after midnight. Lows in the upper 50s. Northeast winds 5 to 10 mph.

FRIDAY
Patchy fog in the morning. Sunny. Highs in the lower 80s. Light and variable winds, becoming west around 5 mph in the afternoon.

FRIDAY NIGHT
Partly cloudy. Lows in the mid 60s. Southwest winds around 5 mph.

SATURDAY
Sunny. Highs in the lower 80s. Northwest winds 10 to 15 mph.

SATURDAY NIGHT AND SUNDAY
Mostly clear. Lows in the upper 50s. Highs in the upper 70s.

SUNDAY NIGHT THROUGH TUESDAY
Partly cloudy. Lows in the upper 50s. Highs around 80.

TUESDAY NIGHT AND WEDNESDAY
Partly cloudy. Lows in the mid 60s. Highs in the lower 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 8/20/2026

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)

Thursday
20 AUG 2026

1 PM

79°

81°

Partly Cloudy

0% Thunder
( 7% severe)

NNE 9

64%

66°

High 80°

4 PM

79°

81°

Partly Cloudy

NNE 9

62%

65°

Partly Cloudy

7 PM

76°

78°

Clear

0% Thunder
( 2% severe)

NNE 7

71%

66°

10 PM

68°

Clear

NE 5

90%

65°

Friday
21 AUG 2026

1 AM

64°

65°

Clear

0% Thunder
( 1% severe)

NE 3

93%

62°

Low 60°

4 AM

61°

62°

Clear

CALM

97%

60°

High 82°

7 AM

61°

62°

Clear

0% Thunder
( 2% severe)

CALM

97%

60°

Partly Cloudy

10 AM

74°

Clear

CALM

71%

64°

1 PM

80°

82°

Partly Cloudy

0% Thunder
( 11% severe)

WNW 5

58%

64°

4 PM

80°

82°

Partly Cloudy

W 7

58%

64°

7 PM

77°

79°

Clear

20%
RAIN
<.01 in

0% Thunder
( 21% severe)

W 5

71%

67°

10 PM

70°

Partly Cloudy

S 5

90%

67°

Saturday
22 AUG 2026

1 AM

68°

Mostly Cloudy

10%
RAIN
<.01 in

0% Thunder
( 18% severe)

SW 5

93%

66°

Low 65°

4 AM

66°

Partly Cloudy

WSW 6

100%

66°

High 81°

7 AM

66°

Partly Cloudy

0% Thunder
( 7% severe)

WNW 7

97%

65°

Partly Cloudy

10 AM

74°

Partly Cloudy

NW 10

76%

66°

1 PM

79°

81°

Partly Cloudy

0% Thunder
( 12% severe)

NNW 13

60%

64°

4 PM

78°

80°

Clear

NNW 14

60%

63°

7 PM

75°

Clear

NNW 10

69%

64°


DECATUR, IL extended weather forecast
Sunday 23 AUG 2026	Monday 24 AUG 2026	Tuesday 25 AUG 2026	Wednesday 26 AUG 2026	Thursday 27 AUG 2026
Low 59°	Low 57°	Low 63°	Low 68°	Low 64°
High 83°	High 80°	High 86°	High 88°	High 88°

Clear 1% Rain	Mostly Cloudy 11% Rain	Partly Cloudy 21% Rain	Partly Cloudy 30% Rain	Partly Cloudy 22% 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