Local Forecast

Mount Vernon, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Mount Vernon, IL.

No Active Alerts

Hour-by-Hour  Current Observation

Sunday 10:15 PM CDTSunday 10:15 PM

°F °C
Regional Observations →
77°F

Partly Cloudy

  • 89° / 73° High / Low
  • 77° Feels Like
  • 0% Chance of Rain

Wind

0 mph

N

UV Index

0

None

Humidity

74%

Dew 68°F

Sun

5:31 AM · 8:16 PM

Rise · Set

Source: CENTRALIA (KENL). Slider scrubs the next 12 hours.

5-Day Outlook

Through Thursday

Local Radar →

Today

89° 73°

Mostly Cloudy

Overnight: Chance of Thunderstorms

Detailed forecast

Today

Partly sunny, with a high near 89. South southeast wind around 9 mph.

Night

A chance of showers and thunderstorms after midnight. Mostly cloudy. Low around 72, with temperatures rising to around 74 overnight. South southeast wind 3 to 8 mph. Chance of precipitation is 40%.

Monday

86° 73°

Thunderstorms

Overnight: Thunderstorms

Detailed forecast

Monday

A chance of showers and thunderstorms before 11am, then showers and thunderstorms. Partly sunny. High near 85, with temperatures falling to around 82 in the afternoon. South southwest wind 6 to 10 mph. Chance of precipitation is 90%.

Night

Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 9pm, then showers and thunderstorms likely between 9pm and 11pm, then a chance of showers and thunderstorms between 11pm and midnight, then showers and thunderstorms likely between midnight and 1am, then a chance of showers and thunderstorms between 1am and 3am, then showers and thunderstorms. Mostly cloudy, with a low around 72. South southwest wind 3 to 8 mph. Chance of precipitation is 80%.

Tuesday

91° 75°

Chance of Thunderstorms

Overnight: Isolated T-storm

Detailed forecast

Tuesday

Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 90. South southwest wind 5 to 8 mph. Chance of precipitation is 70%.

Night

A chance of showers and thunderstorms before 1am. Mostly clear, with a low around 75. South southwest wind around 7 mph. Chance of precipitation is 30%.

Wednesday

93° 77°

Mostly Sunny

Overnight: Slight Chance of Showers

Detailed forecast

Wednesday

Sunny, with a high near 92. South southwest wind 6 to 13 mph, with gusts as high as 20 mph.

Night

A slight chance of rain showers after 1am. Mostly clear, with a low around 76. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.

Thursday

93° 71°

Chance of Scattered Thunderstorms

Overnight: Thunderstorms Likely

Detailed forecast

Thursday

A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Sunny, with a high near 92. South southwest wind 8 to 14 mph, with gusts as high as 20 mph.

Night

A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 70. West wind 5 to 13 mph, with gusts as high as 20 mph.

Mount Vernon, IL Weather Analysis Tools