DECATUR, IL 62521 Weather Forecast & Current Conditions

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62521 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
7:54 PM CDT JUN 9, 2026
Clear 84°F
Feels Like:	88°F
Dewpoint:	70°F
Rel. Hum.:	63%
Visibility:	10 miles
Wind:	W at 6 mph
Pressure:	29.89 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

TONIGHT
Mostly clear this evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 20 percent.

WEDNESDAY
Sunny with highs in the lower 90s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 100.

WEDNESDAY NIGHT
Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Southwest winds 15 to 20 mph. Chance of rain 50 percent.

THURSDAY
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Breezy with highs in the lower 90s. Southwest winds 10 to 15 mph, becoming south 15 to 25 mph in the afternoon. Chance of rain 40 percent. Heat index values up to 101.

THURSDAY NIGHT
Showers with a chance of thunderstorms in the evening, then mostly cloudy after midnight. Breezy with lows in the mid 60s. Southwest winds 15 to 25 mph, becoming west 10 to 15 mph after midnight. Chance of rain 90 percent.

FRIDAY
Sunny. Not as warm with highs in the lower 80s.

FRIDAY NIGHT
Clear. Lows around 60.

SATURDAY
Sunny. Highs in the mid 80s.

SATURDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the mid 60s. Chance of rain 50 percent.

SUNDAY
Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 50 percent.

SUNDAY NIGHT
Mostly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 40 percent.

MONDAY
Partly sunny. Highs in the mid 70s.

MONDAY NIGHT AND TUESDAY
Partly cloudy. Lows in the mid 50s. Highs in the mid 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 6/ 9/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
9 JUN 2026

1 PM

84°

90°

Mostly Cloudy

35%
RAIN
>2 in

0% Thunder
( 35% severe)

SW 12

70%

73°

High 88°

4 PM

87°

94°

Partly Cloudy

SW 12

63%

73°

Partly Cloudy

Chance of Rain

7 PM

85°

92°

Partly Cloudy

24%
RAIN
.01–.1 in

0% Thunder
( 36% severe)

SW 9

67%

73°

10 PM

77°

78°

Partly Cloudy

SSW 7

85%

72°

Wednesday
10 JUN 2026

1 AM

74°

74°

Partly Cloudy

13%
RAIN
<.01 in

0% Thunder
( 19% severe)

SSW 8

87%

70°

Low 72°

4 AM

73°

73°

Partly Cloudy

SSW 9

90%

70°

High 90°

7 AM

75°

75°

Partly Cloudy

1%

0% Thunder
( 8% severe)

SSW 12

87%

71°

Partly Cloudy

10 AM

84°

90°

Partly Cloudy

SW 15

70%

73°

1 PM

88°

96°

Clear

14%
RAIN
<.01 in

0% Thunder
( 46% severe)

SSW 17

61%

73°

4 PM

90°

96°

Partly Cloudy

SSW 18

54%

71°

7 PM

87°

92°

Partly Cloudy

9%

0% Thunder
( 30% severe)

SSW 17

57%

70°

10 PM

80°

83°

Partly Cloudy

SSW 15

69%

69°

Thursday
11 JUN 2026

1 AM

77°

79°

Mostly Cloudy

25%
RAIN
<.01 in

0% Thunder
( 15% severe)

SSW 14

76%

69°

Low 73°

4 AM

75°

75°

Partly Cloudy

SSW 13

82%

69°

High 90°

7 AM

76°

77°

Partly Cloudy

6%

0% Thunder
( 15% severe)

SSW 12

82%

70°

Partly Cloudy

Chance of Rain

Breezy

10 AM

84°

90°

Partly Cloudy

SSW 15

67%

72°

1 PM

88°

96°

Partly Cloudy

35%
RAIN
***

0% Thunder
( 33% severe)

SSW 18

61%

73°

4 PM

90°

96°

Partly Cloudy

SSW 22

54%

71°

7 PM

85°

90°

Partly Cloudy

SSW 20

61%

70°


DECATUR, IL extended weather forecast
Friday 12 JUN 2026	Saturday 13 JUN 2026	Sunday 14 JUN 2026	Monday 15 JUN 2026	Tuesday 16 JUN 2026
Low 64°	Low 58°	Low 60°	Low 62°	Low 59°
High 82°	High 83°	High 78°	High 78°	High 76°

Partly Cloudy 62% Rain	Partly Cloudy 9% Rain	Overcast 53% Rain	Overcast 46% Rain	Overcast 45% Rain

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