Mount Vernon, IL Weather Forecast and Current Conditions (62864)
Feels Like 76°F
Current Weather
Feels Like 76°F
Forecast at a Glance
This Date in Weather History
1845 - A tornado traveled 275 miles across Lake Ontario, New York and Lake Champlain.
More on this and other weather history
Mount Vernon 7 Day Weather Forecast Details
Saturday Sep 20
Day: A slight chance of showers and thunderstorms after 3pm. Mostly sunny. High near 89, with temperatures falling to around 87 in the afternoon. South southwest wind around 6 mph. Chance of precipitation is 20%.
Night: A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southeast wind around 5 mph. Chance of precipitation is 50%.
Sunday Sep 21
Day: A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny. High near 87, with temperatures falling to around 82 in the afternoon. Southwest wind 2 to 10 mph. Chance of precipitation is 50%.
Night: A chance of showers and thunderstorms before 10pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 65. South southwest wind 2 to 7 mph. Chance of precipitation is 70%.
Monday Sep 22
Day: Showers and thunderstorms likely. Mostly cloudy, with a high near 84. South southwest wind 5 to 10 mph. Chance of precipitation is 70%.
Night: Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 64. South wind 2 to 7 mph. Chance of precipitation is 70%.
Tuesday Sep 23
Day: Showers and thunderstorms likely. Mostly cloudy, with a high near 80. South southwest wind 2 to 7 mph.
Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 65. South southeast wind around 5 mph.
Wednesday Sep 24
Day: Rain showers likely before 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 79. East northeast wind 5 to 9 mph.
Night: Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 62. East northeast wind 3 to 8 mph.
Thursday Sep 25
Day: A chance of showers and thunderstorms. Mostly cloudy, with a high near 75. North northeast wind 6 to 9 mph.
Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 59. North northwest wind 2 to 7 mph.
Friday Sep 26
Day: A chance of showers and thunderstorms. Partly sunny, with a high near 77. West northwest wind 2 to 8 mph.
Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 56. West northwest wind around 5 mph.
Sun & Moon Monthly
Sunrise 6:43 AM
Sunset 6:57 PM
Last Light 7:24 PM
Moonset 6:33 PM
Contiguous United States Extremes
Fri's High Temperature
104 at 4 Miles South Of Tolleson, AZ
Sat's Low Temperature
25 at 14 Miles West Southwest Of Mackay, ID and Saranac Lake, NY
Weather Folklore
The higher the clouds, the fairer the weather.
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About Mount Vernon, Illinois
Mount Vernon is a city in Jefferson County, Illinois, United States, and its county seat. The population was 14,600 at the 2020 census. Mount Vernon is the principal city of the Mount Vernon, Illinois micropolitan area, which includes all of Jefferson and Hamilton counties.
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