ILLIOPOLIS, IL 62539 Weather Forecast & Current Conditions

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62539 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
DECATUR, IL Current Weather
6:54 AM CDT JUL 12, 2025
Broken Clouds 72°F
Feels Like:	72°F
Dewpoint:	66°F
Rel. Hum.:	81%
Visibility:	10 miles
Wind:	NW at 5 mph
Pressure:	29.93 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Weather Map

(Automated weather data from NWS/FAA)

62539 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	ILLIOPOLIS, IL 62539 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TODAY
Mostly cloudy with a slight chance of showers and thunderstorms this morning, then partly sunny with a chance of showers and thunderstorms this afternoon. Highs in the mid 80s. Southwest winds 5 to 10 mph, becoming west this afternoon. Chance of rain 30 percent.

TONIGHT
Partly cloudy. Lows in the upper 60s. Northwest winds around 5 mph.

SUNDAY
Mostly sunny. A slight chance of showers in the afternoon. Highs in the mid 80s. North winds around 5 mph, becoming west around 5 mph in the afternoon. Chance of rain 20 percent.

SUNDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the mid 60s. Southwest winds around 5 mph in the evening, becoming light and variable.

MONDAY
Mostly sunny. Highs in the upper 80s. Southeast winds around 5 mph.

MONDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 60s.

TUESDAY AND TUESDAY NIGHT
Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows around 70. Chance of rain 50 percent.

WEDNESDAY
Partly sunny with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of rain 60 percent.

WEDNESDAY NIGHT THROUGH THURSDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 50 percent.

FRIDAY
Mostly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.

62539 WEATHER SATELLITE LOOPS

Visible Weather Satellite
ILLIOPOLIS, IL 62539

Infrared Weather Satellite
ILLIOPOLIS, IL 62539

62539 WEATHER RADAR LOOP

NEXRAD Weather Radar
ILLIOPOLIS, IL 62539

MOS COMPUTER WEATHER FORECAST

DECATUR, IL 3 hourly weather forecast

weather forecast created 8:00 PM EDT 7/11/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

Saturday
12 JUL 2025

1 AM

78°

80°

Mostly Cloudy

51%
RAIN
***

0% Thunder
( 33% severe)

WSW 10

82%

72°

Low 74°

4 AM

75°

75°

Mostly Cloudy

S 9

87%

71°

High 87°

7 AM

75°

75°

Partly Cloudy

21%
RAIN
<.01 in

0% Thunder
( 22% severe)

SSW 10

90%

72°

Partly Cloudy

Chance of Rain

10 AM

81°

85°

Mostly Cloudy

SW 13

74%

72°

1 PM

84°

90°

Partly Cloudy

38%
RAIN
.1–.25 in

0% Thunder
( 26% severe)

WSW 13

67%

72°

4 PM

85°

91°

Partly Cloudy

W 13

65%

72°

7 PM

83°

88°

Partly Cloudy

7%

0% Thunder
( 10% severe)

WNW 9

67%

71°

10 PM

78°

80°

Partly Cloudy

W 7

76%

70°

Sunday
13 JUL 2025

1 AM

74°

74°

Partly Cloudy

3%

0% Thunder
( 5% severe)

NNW 5

84%

69°

Low 68°

4 AM

71°

71°

Partly Cloudy

N 3

90%

68°

High 86°

7 AM

71°

71°

Partly Cloudy

7%

0% Thunder
( 4% severe)

N 3

87%

67°

Partly Cloudy

10 AM

79°

81°

Partly Cloudy

NNW 3

64%

66°

1 PM

83°

84°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 8% severe)

W 6

53%

64°

4 PM

85°

87°

Partly Cloudy

W 6

51%

65°

7 PM

82°

84°

Partly Cloudy

6%

0% Thunder
( 11% severe)

WNW 3

56%

65°

10 PM

75°

75°

Partly Cloudy

SE 2

71%

65°


DECATUR, IL extended weather forecast
BAD DAY BAD DATE	BAD DAY BAD DATE	BAD DAY BAD DATE	BAD DAY BAD DATE	BAD DAY BAD DATE
Low 69°	Low 65°	Low 71°	Low 71°	Low 68°
High 82°	High 88°	High 88°	High 89°	High 86°

Mostly Cloudy 56% Rain	Partly Cloudy 22% Rain	Mostly Cloudy 62% Rain	Overcast 66% Rain	Overcast 57% Rain

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