Weather forecast for: Mount Vernon IL
Last Update: 9:26 pm CDT Sep 23, 2026
Tonight: Patchy drizzle after 1am. Mostly cloudy, with a low around 56. Light north northeast wind.
Thursday: Patchy drizzle before 8am. Mostly cloudy, with a high near 75. Calm wind becoming northeast 5 to 7 mph in the morning.
Thursday Night: Mostly cloudy, with a low around 59. Light east northeast wind.
Friday: Partly sunny, with a high near 79. Calm wind becoming northeast 5 to 7 mph in the afternoon.
Friday Night: Partly cloudy, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.
Saturday: Partly sunny, with a high near 75. Light east northeast wind.
Saturday Night: Mostly cloudy, with a low around 55. Calm wind.
Sunday: Partly sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night: Partly cloudy, with a low around 54. Light east wind.
Monday: Mostly sunny, with a high near 82. Calm wind becoming east southeast around 5 mph in the afternoon.
Monday Night: Mostly clear, with a low around 58. Light east wind.
Tuesday: A chance of showers. Mostly sunny, with a high near 87. Light east southeast wind becoming south 6 to 11 mph in the morning.
Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South wind 8 to 11 mph.
Wednesday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 82. South wind 13 to 16 mph becoming west in the afternoon. Winds could gust as high as 21 mph.
WeatherWorld.com
City of Mt. Vernon, Illinois
