MOUNT VERNON, IL 62864 Weather Forecast & Current Conditions

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MT. VERNON, IL
Current Weather

11:56 AM CDT AUG 7, 2026
Broken Clouds
Thunder
84°F
Feels Like: 92°F
Dewpoint: 75°F
Rel. Hum.: 74%
Visibility: 10 miles
Wind: SSW at 7 mph
Pressure: 30.10 inches
Last 72 hours

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MOUNT VERNON, IL 62864
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
THIS AFTERNOON
Mostly sunny with a chance of showers and thunderstorms. Near steady temperature in the upper 80s. Southwest winds around 5 mph. Chance of rain 40 percent.
TONIGHT
Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows around 70. Southwest winds around 5 mph. Chance of rain 20 percent.
SATURDAY
Mostly sunny. Highs around 90. Southwest winds around 5 mph.
SATURDAY NIGHT
Mostly clear. Lows in the lower 70s. Southwest winds around 5 mph in the evening, becoming light and variable.
SUNDAY
Sunny. Highs in the lower 90s. South winds 5 to 10 mph.
SUNDAY NIGHT THROUGH TUESDAY
Mostly clear. Lows in the mid 70s. Highs in the mid 90s.
TUESDAY NIGHT
A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 70s. Chance of rain 50 percent.
WEDNESDAY
Partly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 50 percent.
WEDNESDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows around 70. Chance of rain 60 percent.
THURSDAY
Partly sunny. A chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent.

Visible Weather Satellite
MOUNT VERNON, IL 62864
Infrared Weather Satellite
MOUNT VERNON, IL 62864
NEXRAD Weather Radar
MOUNT VERNON, IL 62864

MT. VERNON, IL 3 hourly weather forecast

weather forecast created  8:00 AM EDT  8/ 7/2026
Friday
7 AUG 2026
MOUNT VERNON, IL 62864 weather forecast Day 1, 12 hours 1 PM 85° 93° Mostly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 36% severe)
SSW   7 70% 74°
High 88° MOUNT VERNON, IL 62864 weather forecast Day 1, 15 hours 4 PM 87° 97° Partly Cloudy SW   7 68% 75°
Partly Cloudy

Chance of Rain

MOUNT VERNON, IL 62864 weather forecast Day 1, 18 hours 7 PM 83° 90° Partly Cloudy 23%
RAIN
.5–1 in
0% Thunder
( 16% severe)
SW   1 74% 74°
MOUNT VERNON, IL 62864 weather forecast Day 1, 21 hours 10 PM 75° 75° Partly Cloudy   CALM 94% 73°
Saturday
8 AUG 2026
MOUNT VERNON, IL 62864 weather forecast Day 2, 0 hours 1 AM 73° 73° Partly Cloudy 4%

0% Thunder
( 11% severe)
  CALM 97% 72°
Low 69° MOUNT VERNON, IL 62864 weather forecast Day 2, 3 hours 4 AM 71° 71° Partly Cloudy   CALM 100% 71°
High 91° MOUNT VERNON, IL 62864 weather forecast Day 2, 6 hours 7 AM 72° 72° Mostly Cloudy 4%

0% Thunder
( 10% severe)
SW   2 97% 71°

Partly Cloudy



MOUNT VERNON, IL 62864 weather forecast Day 2, 9 hours 10 AM 82° 87° Partly Cloudy WSW   5 74% 73°
MOUNT VERNON, IL 62864 weather forecast Day 2, 12 hours 1 PM 87° 97° Partly Cloudy 9%

0% Thunder
( 20% severe)
SW   5 68% 75°
MOUNT VERNON, IL 62864 weather forecast Day 2, 15 hours 4 PM 89° 99° Partly Cloudy SW   5 64% 75°
MOUNT VERNON, IL 62864 weather forecast Day 2, 18 hours 7 PM 86° 95° Partly Cloudy 4%

0% Thunder
( 7% severe)
  CALM 70% 75°
MOUNT VERNON, IL 62864 weather forecast Day 2, 21 hours 10 PM 76° 76° Clear   CALM 94% 74°
Sunday
9 AUG 2026
MOUNT VERNON, IL 62864 weather forecast Day 3, 0 hours 1 AM 73° 73° Partly Cloudy 13%
RAIN
<.01 in
0% Thunder
( 9% severe)
  CALM 97% 72°
Low 69° MOUNT VERNON, IL 62864 weather forecast Day 3, 3 hours 4 AM 72° 72° Partly Cloudy   CALM 100% 72°
High 93° MOUNT VERNON, IL 62864 weather forecast Day 3, 6 hours 7 AM 72° 72° Partly Cloudy 4%

0% Thunder
( 15% severe)
  CALM 100% 72°

Partly Cloudy



MOUNT VERNON, IL 62864 weather forecast Day 3, 9 hours 10 AM 83° 90° Partly Cloudy S   7 77% 75°
MOUNT VERNON, IL 62864 weather forecast Day 3, 15 hours 1 PM 89° 99° Partly Cloudy 1%

0% Thunder
( 19% severe)
SSW   8 64% 75°
MOUNT VERNON, IL 62864 weather forecast Day 3, 18 hours 4 PM 91° 101° Partly Cloudy SSW   8 58% 74°
MOUNT VERNON, IL 62864 weather forecast Day 3, 21 hours 7 PM 87° 97° Clear     S   6 68% 75°

MT. VERNON, IL extended weather forecast

Monday
10 AUG 2026
Tuesday
11 AUG 2026
Wednesday
12 AUG 2026
Thursday
13 AUG 2026
Friday
14 AUG 2026
Low 72° Low 72° Low 71° Low 66° Low 61°
High 97° High 98° High 90° High 86° High 89°
MOUNT VERNON, IL 62864 weather forecast Day 4 MOUNT VERNON, IL 62864 weather forecast Day 5 MOUNT VERNON, IL 62864 weather forecast Day 6 MOUNT VERNON, IL 62864 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
8% Rain
Partly Cloudy
15% Rain
Mostly Cloudy
44% Rain
Partly Cloudy
33% Rain
Partly Cloudy
21% Rain
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