Mount Vernon, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Mount Vernon, IL in one place.
Sunny, with a high near 94. Southwest wind 6 to 12 mph.
Local Weather Overview
This forecast page for Mount Vernon, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 12, 2026 2:17 AM CDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Mount Vernon, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 2:17 AM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Mount Vernon
Tuesday looks like the warmest upcoming period in Mount Vernon at 94 degrees F.
Saturday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 15 to 24 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 2:17 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. South southwest wind 3 to 8 mph. Chance of precipitation is 30%.
Showers and thunderstorms. Mostly cloudy, with a high near 86. West southwest wind 2 to 6 mph. Chance of precipitation is 90%.
Showers and thunderstorms. Mostly cloudy, with a low around 63. North wind around 3 mph.
Showers and thunderstorms likely. Mostly cloudy, with a high near 80. East southeast wind 5 to 10 mph.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 55. West southwest wind 6 to 15 mph, with gusts as high as 20 mph.
A chance of showers and thunderstorms before 7am. Partly sunny, with a high near 68. Northwest wind 15 to 24 mph, with gusts as high as 28 mph.
Partly cloudy, with a low around 39. North northwest wind 10 to 23 mph.
Sunny, with a high near 61. North wind 8 to 14 mph.
Clear, with a low around 35. East northeast wind 0 to 5 mph.
Sunny, with a high near 68. South southeast wind 1 to 7 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Sunny
|
94°F |
6 to 12 mph
SW
|
|
Tuesday Night
Oct 13
|
Mostly Clear then Chance Showers And Thunderstorms
|
69°F |
3 to 8 mph
SSW
|
|
Wednesday
Oct 14
|
Showers And Thunderstorms
|
86°F |
2 to 6 mph
WSW
|
|
Wednesday Night
Oct 14
|
Showers And Thunderstorms
|
63°F |
3 mph
N
|
|
Thursday
Oct 15
|
Showers And Thunderstorms Likely
|
80°F |
5 to 10 mph
ESE
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
55°F |
6 to 15 mph
WSW
|
|
Friday
Oct 16
|
Chance Showers And Thunderstorms then Partly Sunny
|
68°F |
15 to 24 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
39°F |
10 to 23 mph
NNW
|
|
Saturday
Oct 17
|
Sunny
|
61°F |
8 to 14 mph
N
|
|
Saturday Night
Oct 17
|
Clear
|
35°F |
0 to 5 mph
ENE
|
|
Sunday
Oct 18
|
Sunny
|
68°F |
1 to 7 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mount Vernon.
