MOUNT VERNON, IL 62864 Weather Forecast & Current Conditions

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62864 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
MT. VERNON, IL Current Weather
12:56 PM CDT SEP 21, 2026
Scattered Clouds 75°F
Feels Like:	75°F
Dewpoint:	68°F
Rel. Hum.:	79%
Visibility:	10 miles
Wind:	NE at 5 mph
Pressure:	30.00 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

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(Automated weather data from NWS/FAA)

62864 WEATHER FORECAST
10-Day model forecast maps 2026 Hurricanes	MOUNT VERNON, IL 62864 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TODAY
Mostly cloudy this morning, then becoming partly sunny. A slight chance of showers and thunderstorms. Much cooler with highs in the mid 70s. Northeast winds 5 to 10 mph. Chance of rain 20 percent.

TONIGHT
Mostly cloudy. Lows around 60. Northeast winds 5 to 10 mph.

TUESDAY
Mostly sunny. Highs in the upper 70s. Northeast winds 10 to 15 mph.

TUESDAY NIGHT
Partly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph.

WEDNESDAY
Mostly sunny. Highs in the mid 70s. North winds 10 to 15 mph.

WEDNESDAY NIGHT AND THURSDAY
Partly cloudy. Lows in the mid 50s. Highs in the upper 70s.

THURSDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s.

FRIDAY AND FRIDAY NIGHT
Partly cloudy. Highs in the upper 70s. Lows in the lower 50s.

SATURDAY
Partly sunny. Highs in the mid 70s.

SATURDAY NIGHT AND SUNDAY
Partly cloudy. Lows in the mid 50s. Highs in the lower 80s.

62864 WEATHER SATELLITE LOOPS

Visible Weather Satellite
MOUNT VERNON, IL 62864

Infrared Weather Satellite
MOUNT VERNON, IL 62864

62864 WEATHER RADAR LOOP

NEXRAD Weather Radar
MOUNT VERNON, IL 62864

MOS COMPUTER WEATHER FORECAST

MT. VERNON, IL 3 hourly weather forecast

weather forecast created 8:00 AM EDT 9/21/2026

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)

Monday
21 SEP 2026

1 PM

77°

79°

Mostly Cloudy

13%
RAIN
<.01 in

0% Thunder
( 20% severe)

N 6

76%

69°

High 80°

4 PM

79°

81°

Mostly Cloudy

NA 8

69%

68°

Mostly Cloudy

7 PM

74°

Mostly Cloudy

0% Thunder
( 4% severe)

NNE 8

76%

66°

10 PM

66°

Partly Cloudy

NNE 8

97%

65°

Tuesday
22 SEP 2026

1 AM

63°

Partly Cloudy

0% Thunder
( 4% severe)

NNE 6

90%

60°

Low 57°

4 AM

61°

60°

Mostly Cloudy

NNE 7

93%

59°

High 75°

7 AM

60°

59°

Mostly Cloudy

0% Thunder
( 1% severe)

NNE 7

93%

58°

Mostly Cloudy

10 AM

67°

Mostly Cloudy

NNE 9

75%

59°

1 PM

71°

Mostly Cloudy

0% Thunder
( 4% severe)

NNE 9

66%

59°

4 PM

74°

Mostly Cloudy

NNE 12

59%

59°

7 PM

69°

Mostly Cloudy

0% Thunder
( 2% severe)

NNE 10

68%

58°

10 PM

62°

61°

Mostly Cloudy

NNE 8

87%

58°

Wednesday
23 SEP 2026

1 AM

60°

Mostly Cloudy

0% Thunder
( 1% severe)

NNE 6

87%

56°

Low 54°

4 AM

58°

57°

Mostly Cloudy

NNE 6

90%

55°

High 75°

7 AM

57°

56°

Mostly Cloudy

0% Thunder
( 0% severe)

N 7

93%

55°

Mostly Cloudy

10 AM

66°

Mostly Cloudy

NNE 8

70%

56°

1 PM

72°

Mostly Cloudy

0% Thunder
( 1% severe)

N 10

59%

57°

4 PM

74°

Partly Cloudy

N 12

55%

57°

7 PM

69°

Partly Cloudy

NNE 9

66%

57°


MT. VERNON, IL extended weather forecast
Thursday 24 SEP 2026	Friday 25 SEP 2026	Saturday 26 SEP 2026	Sunday 27 SEP 2026	Monday 28 SEP 2026
Low 53°	Low 57°	Low 51°	Low 49°	Low 51°
High 80°	High 79°	High 73°	High 77°	High 83°

Partly Cloudy 6% Rain	Mostly Cloudy 20% Rain	Overcast 32% Rain	Mostly Cloudy 28% Rain	Partly Cloudy 21% Rain