Current Conditions

Mount Vernon, Illinois

74°F23°C

Rain

Wind

WSW 6 mph9 km/h

Humidity

91%

Cloud Cover

92%

As of Wednesday, October 14, 2026 at 7:35 AM CDT

Today's Outlook

Day

Overcast and warm, with a high of 75°F24°C. Light wind from the W around 5 mph8 km/h. 99% chance of rain in the morning. Heavy, humid air.

Night

Mostly cloudy, with a low around 71°F22°C. Breezy from the SSW at 6 to 9 mph10 to 15 km/h. 48% chance of showers in the evening.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 79°F26°C	Low 71°F22°C	Precip 0.35 in9 mm99%	Cloud 76%	Wind WSW 6 mph9 km/h	Wednesday: Overcast and warm, with a high of 75°F24°C. Light wind from the W around 5 mph8 km/h. 99% chance of rain in the morning. Heavy, humid air. Wednesday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the SSW at 6 to 9 mph10 to 15 km/h. 48% chance of showers in the evening.
Light Rain	High 79°F26°C	Low 68°F20°C	Precip 0.31 in7.8 mm77%	Cloud 73%	Wind SSW 7 mph11 km/h	Thursday: Overcast and warm, with a high of 79°F26°C and morning low of 68°F20°C. Breezy from the SSW at 7 to 9 mph12 to 14 km/h. 66% chance of light rain in the morning. Heavy, humid air. Thursday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the SW at 7 to 10 mph11 to 16 km/h. 77% chance of showers overnight.
Light Rain	High 70°F21°C	Low 50°F10°CFeels 45°F7°C	Precip 0.22 in5.6 mm84%	Cloud 84%	Wind NW 14 mph22 km/h	Friday: Overcast and mild, with a high of 55°F13°C. Windy from the NW at 15 to 16 mph24 to 26 km/h. 77% chance of light rain in the morning. Dry air. Friday Night: Mostly cloudy, with a low around 50°F10°C. Breezy from the NW at 13 to 14 mph21 to 23 km/h. 84% chance of light rain overnight.
Clear	High 55°F13°C	Low 42°F5°CFeels 36°F2°C	Precip 0 in0 mm—	Cloud 8%	Wind N 8 mph12 km/h	Saturday: Mostly clear and mild, with a high of 55°F13°C and morning low of 42°F5°C. Breezy from the N at 7 to 9 mph12 to 15 km/h. Dry air. Saturday Night: Mostly clear, with a low around 42°F6°C. Breezy from the N at 8 to 12 mph13 to 20 km/h.
Clear	High 61°F16°C	Low 37°F3°CFeels 33°F0°C	Precip 0 in0 mm—	Cloud 1%	Wind SE 6 mph10 km/h	Sunday: Mostly clear and mild, with a high of 61°F16°C and morning low of 37°F3°C. Breezy from the SE at 7 mph11 km/h. Dry air. Sunday Night: Mostly clear, with a low around 38°F3°C. Breezy from the SE at 6 to 7 mph10 to 11 km/h.
Clear	High 66°F19°C	Low 43°F6°CFeels 38°F4°C	Precip 0 in0 mm—	Cloud 36%	Wind SSE 7 mph11 km/h	Monday: Partly cloudy and mild, with a high of 66°F19°C and morning low of 43°F6°C. Breezy from the S at 7 mph11 km/h. Dry air. Monday Night: Partly cloudy, with a low around 43°F6°C. Breezy from the SSE at 7 mph11 km/h.
Drizzle	High 69°F21°C	Low 50°F10°C	Precip 0.03 in0.7 mm11%	Cloud 52%	Wind SSE 6 mph10 km/h	Tuesday: Mostly cloudy and warm, with a high of 69°F21°C and morning low of 50°F10°C. Light wind from the SSE around 6 mph10 km/h. Dry air. Tuesday Night: Partly cloudy, with a low around 50°F10°C. Breezy from the SE at 6 to 7 mph10 to 12 km/h. 11% chance of drizzle in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdayOct 14	79°F26°C	71°F22°C	0.35 in9 mm· 99%	76%	Rain	WSW 6 mph9 km/h
DayOvercast and warm, with a high of 75°F24°C. Light wind from the W around 5 mph8 km/h. 99% chance of rain in the morning. Heavy, humid air. NightMostly cloudy, with a low around 71°F22°C. Breezy from the SSW at 6 to 9 mph10 to 15 km/h. 48% chance of showers in the evening.
	ThursdayOct 15	79°F26°C	68°F20°C	0.31 in7.8 mm· 77%	73%	Light Rain	SSW 7 mph11 km/h
DayOvercast and warm, with a high of 79°F26°C and morning low of 68°F20°C. Breezy from the SSW at 7 to 9 mph12 to 14 km/h. 66% chance of light rain in the morning. Heavy, humid air. NightMostly cloudy, with a low around 68°F20°C. Breezy from the SW at 7 to 10 mph11 to 16 km/h. 77% chance of showers overnight.
	FridayOct 16	70°F21°C	50°F10°C Feels 45°F7°C	0.22 in5.6 mm· 84%	84%	Light Rain	NW 14 mph22 km/h
DayOvercast and mild, with a high of 55°F13°C. Windy from the NW at 15 to 16 mph24 to 26 km/h. 77% chance of light rain in the morning. Dry air. NightMostly cloudy, with a low around 50°F10°C. Breezy from the NW at 13 to 14 mph21 to 23 km/h. 84% chance of light rain overnight.
	SaturdayOct 17	55°F13°C	42°F5°C Feels 36°F2°C	0 in0 mm· —	8%	Clear	N 8 mph12 km/h
DayMostly clear and mild, with a high of 55°F13°C and morning low of 42°F5°C. Breezy from the N at 7 to 9 mph12 to 15 km/h. Dry air. NightMostly clear, with a low around 42°F6°C. Breezy from the N at 8 to 12 mph13 to 20 km/h.
	SundayOct 18	61°F16°C	37°F3°C Feels 33°F0°C	0 in0 mm· —	1%	Clear	SE 6 mph10 km/h
DayMostly clear and mild, with a high of 61°F16°C and morning low of 37°F3°C. Breezy from the SE at 7 mph11 km/h. Dry air. NightMostly clear, with a low around 38°F3°C. Breezy from the SE at 6 to 7 mph10 to 11 km/h.
	MondayOct 19	66°F19°C	43°F6°C Feels 38°F4°C	0 in0 mm· —	36%	Clear	SSE 7 mph11 km/h
DayPartly cloudy and mild, with a high of 66°F19°C and morning low of 43°F6°C. Breezy from the S at 7 mph11 km/h. Dry air. NightPartly cloudy, with a low around 43°F6°C. Breezy from the SSE at 7 mph11 km/h.
	TuesdayOct 20	69°F21°C	50°F10°C	0.03 in0.7 mm· 11%	52%	Drizzle	SSE 6 mph10 km/h
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 50°F10°C. Light wind from the SSE around 6 mph10 km/h. Dry air. NightPartly cloudy, with a low around 50°F10°C. Breezy from the SE at 6 to 7 mph10 to 12 km/h. 11% chance of drizzle in the evening.
	WednesdayOct 21	73°F23°C	53°F12°C	0.06 in1.4 mm· 15%	40%	Drizzle	SSE 6 mph10 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 53°F12°C. Light wind from the SSE around 6 mph9 km/h. 15% chance of drizzle in the morning. NightPartly cloudy, with a low around 53°F12°C. Light wind from the SSE around 6 mph10 km/h. 12% chance of drizzle overnight.
	ThursdayOct 22	75°F24°C	55°F13°C	0.04 in1 mm· 12%	44%	Drizzle	S 6 mph10 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 55°F13°C. Light wind from the SSW around 6 mph10 km/h. 12% chance of drizzle in the morning. NightPartly cloudy, with a low around 55°F13°C. Breezy from the SSE at 6 to 7 mph10 to 11 km/h. 10% chance of drizzle overnight.
	FridayOct 23	74°F23°C	56°F13°C	0.04 in1.1 mm· 9%	56%	Partly Cloudy	S 7 mph11 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 56°F13°C. Breezy from the S at 7 mph11 km/h. NightMostly cloudy, with a low around 56°F13°C. Breezy from the SSE at 7 mph11 km/h.
	SaturdayOct 24	72°F22°C	56°F13°C	0.08 in2 mm· 15%	59%	Drizzle	SSW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 56°F13°C. Breezy from the SSW at 8 mph12 km/h. 15% chance of drizzle in the morning. NightMostly cloudy, with a low around 56°F14°C. Breezy from the S at 7 to 8 mph12 to 12 km/h. 14% chance of drizzle overnight.
	SundayOct 25	67°F20°C	55°F13°C	0.08 in2 mm· 13%	55%	Drizzle	W 7 mph11 km/h
DayMostly cloudy and mild, with a high of 67°F20°C and morning low of 55°F13°C. Breezy from the W at 7 mph11 km/h. 13% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 55°F13°C. Breezy from the W at 7 to 8 mph11 to 13 km/h. 13% chance of drizzle overnight.
	MondayOct 26	64°F18°C	51°F11°C	0.08 in2 mm· 14%	64%	Drizzle	NNW 7 mph11 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 51°F11°C. Breezy from the NW at 7 mph11 km/h. 14% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 51°F11°C. Breezy from the NNW at 7 mph11 km/h. 14% chance of drizzle overnight.
	TuesdayOct 27	63°F17°C	51°F11°C	0.12 in3.1 mm· 18%	63%	Showers	WNW 7 mph11 km/h
DayMostly cloudy and mild, with a high of 63°F17°C and morning low of 51°F11°C. Breezy from the WNW at 7 mph11 km/h. 17% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 51°F11°C. Breezy from the NW at 7 mph11 km/h. 18% chance of showers overnight.
	WednesdayOct 28	64°F18°C	51°F11°C	0.15 in3.7 mm· 20%	65%	Showers	SW 7 mph12 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 51°F11°C. Breezy from the SW at 7 mph12 km/h. 18% chance of showers in the morning. Dry air. NightMostly cloudy, with a low around 52°F11°C. Breezy from the SSW at 7 mph11 km/h. 20% chance of showers overnight.

Nearby Cities

Marion41 mi65 km Carbondale44 mi71 km O'Fallon58 mi93 km Belleville60 mi97 km Fairview Heights62 mi99 km Collinsville63 mi102 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 38.3173°N, 88.9031°W·Elevation: 156m·Timezone: America/Chicago·Population: 15,087