Current Conditions

Mount Vernon, Illinois

91°F33°C

Drizzle

Feels like102°F39°C

Wind

WSW 4 mph7 km/h

Humidity

61%

Cloud Cover

93%

As of Thursday, August 13, 2026 at 12:35 PM CDT

Today's Outlook

Day

Overcast and hot, with a high of 95°F35°C and morning low of 76°F25°C — feels like 108°F42°C. Light wind from the SSW around 5 mph7 km/h. 16% chance of drizzle in the morning. Heat risk in the afternoon.

Night

Mostly cloudy, with a low around 85°F29°C. Breezy from the SE at 6 to 7 mph10 to 11 km/h. 20% chance of drizzle in the evening.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 95°F35°CFeels 107°F42°C	Low 76°F25°C	Precip 0.03 in0.8 mm20%	Cloud 81%	Wind S 5 mph8 km/h	Thursday: Overcast and hot, with a high of 95°F35°C and morning low of 76°F25°C — feels like 108°F42°C. Light wind from the SSW around 5 mph7 km/h. 16% chance of drizzle in the morning. Heat risk in the afternoon. Thursday Night: Mostly cloudy, with a low around 85°F29°C. Breezy from the SE at 6 to 7 mph10 to 11 km/h. 20% chance of drizzle in the evening.
Hot	High 96°F35°CFeels 105°F41°C	Low 79°F26°C	Precip 0 in0.1 mm2%	Cloud 58%	Wind SSW 5 mph8 km/h	Friday: Mostly cloudy and hot, with a high of 96°F35°C and morning low of 79°F26°C — feels like 106°F41°C. Light wind from the SSW around 4 mph7 km/h. Heat risk in the afternoon. Friday Night: Partly cloudy, with a low around 81°F27°C. Breezy from the S at 6 to 8 mph10 to 12 km/h.
Hot	High 95°F35°CFeels 103°F39°C	Low 79°F26°C	Precip 0.02 in0.4 mm6%	Cloud 58%	Wind SSW 5 mph8 km/h	Saturday: Mostly cloudy and hot, with a high of 95°F35°C and morning low of 79°F26°C — feels like 102°F39°C. Light wind from the SW around 5 mph8 km/h. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 81°F27°C. Light wind from the S around 6 mph9 km/h.
Drizzle	High 100°F38°CFeels 105°F40°C	Low 81°F27°CFeels 85°F29°C	Precip 0.02 in0.6 mm11%	Cloud 41%	Wind WSW 7 mph11 km/h	Sunday: Partly cloudy and hot, with a high of 100°F38°C and morning low of 81°F27°C. Breezy from the WSW at 7 to 8 mph12 to 12 km/h. 10% chance of drizzle. Heat risk in the afternoon. Sunday Night: Partly cloudy, with a low around 83°F28°C. Breezy from the WSW at 7 to 8 mph11 to 12 km/h. 11% chance of drizzle overnight.
Showers	High 89°F32°CFeels 92°F33°C	Low 75°F24°C	Precip 0.06 in1.6 mm25%	Cloud 46%	Wind NNW 7 mph10 km/h	Monday: Partly cloudy and hot, with a high of 89°F32°C and morning low of 75°F24°C. Breezy from the NNW at 7 to 8 mph11 to 12 km/h. Humid. Monday Night: Partly cloudy, with a low around 78°F25°C. Light wind from the N around 6 mph10 km/h. 25% chance of showers overnight.
Clear	High 91°F33°C	Low 71°F22°C	Precip 0.02 in0.4 mm4%	Cloud 30%	Wind E 4 mph6 km/h	Tuesday: Partly cloudy and hot, with a high of 91°F33°C and morning low of 71°F22°C. Light wind from the ESE around 3 mph5 km/h. Humid. Tuesday Night: Partly cloudy, with a low around 73°F23°C. Light wind from the E around 5 mph8 km/h.
Showers	High 94°F35°CFeels 99°F37°C	Low 75°F24°C	Precip 0.07 in1.8 mm23%	Cloud 58%	Wind SSW 7 mph11 km/h	Wednesday: Mostly cloudy and hot, with a high of 94°F35°C and morning low of 75°F24°C. Breezy from the SSW at 7 to 8 mph12 to 14 km/h. 18% chance of drizzle in the morning. Heat risk in the afternoon. Wednesday Night: Mostly cloudy, with a low around 77°F25°C. Breezy from the S at 7 mph11 km/h. 23% chance of showers in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	95°F35°C Feels 107°F42°C	76°F25°C	0.03 in0.8 mm· 20%	81%	Drizzle	S 5 mph8 km/h
DayOvercast and hot, with a high of 95°F35°C and morning low of 76°F25°C — feels like 108°F42°C. Light wind from the SSW around 5 mph7 km/h. 16% chance of drizzle in the morning. Heat risk in the afternoon. NightMostly cloudy, with a low around 85°F29°C. Breezy from the SE at 6 to 7 mph10 to 11 km/h. 20% chance of drizzle in the evening.
	FridayAug 14	96°F35°C Feels 105°F41°C	79°F26°C	0 in0.1 mm· 2%	58%	Hot	SSW 5 mph8 km/h
DayMostly cloudy and hot, with a high of 96°F35°C and morning low of 79°F26°C — feels like 106°F41°C. Light wind from the SSW around 4 mph7 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Breezy from the S at 6 to 8 mph10 to 12 km/h.
	SaturdayAug 15	95°F35°C Feels 103°F39°C	79°F26°C	0.02 in0.4 mm· 6%	58%	Hot	SSW 5 mph8 km/h
DayMostly cloudy and hot, with a high of 95°F35°C and morning low of 79°F26°C — feels like 102°F39°C. Light wind from the SW around 5 mph8 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Light wind from the S around 6 mph9 km/h.
	SundayAug 16	100°F38°C Feels 105°F40°C	81°F27°C Feels 85°F29°C	0.02 in0.6 mm· 11%	41%	Drizzle	WSW 7 mph11 km/h
DayPartly cloudy and hot, with a high of 100°F38°C and morning low of 81°F27°C. Breezy from the WSW at 7 to 8 mph12 to 12 km/h. 10% chance of drizzle. Heat risk in the afternoon. NightPartly cloudy, with a low around 83°F28°C. Breezy from the WSW at 7 to 8 mph11 to 12 km/h. 11% chance of drizzle overnight.
	MondayAug 17	89°F32°C Feels 92°F33°C	75°F24°C	0.06 in1.6 mm· 25%	46%	Showers	NNW 7 mph10 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 75°F24°C. Breezy from the NNW at 7 to 8 mph11 to 12 km/h. Humid. NightPartly cloudy, with a low around 78°F25°C. Light wind from the N around 6 mph10 km/h. 25% chance of showers overnight.
	TuesdayAug 18	91°F33°C	71°F22°C	0.02 in0.4 mm· 4%	30%	Clear	E 4 mph6 km/h
DayPartly cloudy and hot, with a high of 91°F33°C and morning low of 71°F22°C. Light wind from the ESE around 3 mph5 km/h. Humid. NightPartly cloudy, with a low around 73°F23°C. Light wind from the E around 5 mph8 km/h.
	WednesdayAug 19	94°F35°C Feels 99°F37°C	75°F24°C	0.07 in1.8 mm· 23%	58%	Showers	SSW 7 mph11 km/h
DayMostly cloudy and hot, with a high of 94°F35°C and morning low of 75°F24°C. Breezy from the SSW at 7 to 8 mph12 to 14 km/h. 18% chance of drizzle in the morning. Heat risk in the afternoon. NightMostly cloudy, with a low around 77°F25°C. Breezy from the S at 7 mph11 km/h. 23% chance of showers in the evening.
	ThursdayAug 20	90°F32°C	74°F23°C	0.09 in2.4 mm· 16%	47%	Showers	N 6 mph10 km/h
DayMostly cloudy and hot, with a high of 90°F32°C and morning low of 74°F23°C. Light wind from the NNW around 6 mph10 km/h. 11% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 76°F25°C. Breezy from the N at 7 mph11 km/h. 16% chance of showers throughout the night.
	FridayAug 21	88°F31°C	71°F21°C	0.06 in1.6 mm· 12%	44%	Drizzle	ENE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 88°F31°C and morning low of 71°F21°C. Light wind from the ENE around 6 mph9 km/h. 11% chance of drizzle throughout the day. NightPartly cloudy, with a low around 72°F22°C. Light wind from the ENE around 6 mph9 km/h. 12% chance of drizzle throughout the night.
	SaturdayAug 22	90°F32°C	71°F22°C	0.07 in1.8 mm· 14%	41%	Showers	ESE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 71°F22°C. Light wind from the SSW around 6 mph10 km/h. 14% chance of showers throughout the day. NightPartly cloudy, with a low around 73°F23°C. Light wind from the E around 6 mph9 km/h. 10% chance of drizzle before dawn.
	SundayAug 23	91°F33°C	71°F22°C	0.03 in0.8 mm· 6%	33%	Clear	ENE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 91°F33°C and morning low of 71°F22°C. Light wind from the NW around 6 mph10 km/h. NightPartly cloudy, with a low around 73°F23°C. Light wind from the E around 6 mph9 km/h.
	MondayAug 24	94°F34°C	71°F22°C	0.01 in0.2 mm· 2%	28%	Clear	E 6 mph9 km/h
DayPartly cloudy and hot, with a high of 94°F34°C and morning low of 71°F22°C. Light wind from the ESE around 6 mph9 km/h. NightPartly cloudy, with a low around 73°F23°C. Light wind from the E around 6 mph9 km/h.
	TuesdayAug 25	94°F35°C	73°F23°C	0.01 in0.2 mm· 5%	34%	Clear	SE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 94°F35°C and morning low of 73°F23°C. Light wind from the SSE around 6 mph9 km/h. NightPartly cloudy, with a low around 75°F24°C. Light wind from the ESE around 6 mph10 km/h.
	WednesdayAug 26	94°F35°C	73°F23°C	0.03 in0.7 mm· 8%	37%	Clear	ESE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 94°F35°C and morning low of 73°F23°C. Light wind from the S around 6 mph9 km/h. NightPartly cloudy, with a low around 75°F24°C. Light wind from the ESE around 6 mph9 km/h.
	ThursdayAug 27	92°F33°C	73°F23°C	0.05 in1.2 mm· 13%	49%	Drizzle	E 6 mph9 km/h
DayMostly cloudy and hot, with a high of 92°F33°C and morning low of 73°F23°C. Light wind from the E around 6 mph9 km/h. 13% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 75°F24°C. Light wind from the E around 6 mph10 km/h. 12% chance of drizzle before dawn.

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

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