Current Conditions

Mount Vernon, Illinois

74°F23°C

Partly Cloudy

Wind

ENE 6 mph10 km/h

Humidity

52%

Cloud Cover

21%

As of Thursday, July 23, 2026 at 11:15 AM CDT

Today's Outlook

Day

Partly cloudy and warm, with a high of 81°F27°C and morning low of 65°F18°C. Light wind from the NE around 5 mph9 km/h.

Night

Overcast, with a low around 72°F22°C. Light wind from the ENE around 4 mph7 km/h.

7-Day Forecast

Day	Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
ThursdayJul 23	Partly Cloudy	High 81°F27°C	Low 65°F18°C	Precip 0 in0 mm—	Cloud 65%	Wind ENE 5 mph8 km/h	Thursday: Partly cloudy and warm, with a high of 81°F27°C and morning low of 65°F18°C. Light wind from the NE around 5 mph9 km/h. Thursday Night: Overcast, with a low around 72°F22°C. Light wind from the ENE around 4 mph7 km/h.
FridayJul 24	Light Rain	High 75°F24°C	Low 68°F20°C	Precip 0.15 in3.9 mm75%	Cloud 91%	Wind E 3 mph5 km/h	Friday: Overcast and warm, with a high of 75°F24°C and morning low of 68°F20°C. Light wind from the E around 3 mph5 km/h. 75% chance of light rain throughout the day. Friday Night: Overcast, with a low around 68°F20°C. Light wind from the E around 4 mph6 km/h. 63% chance of light rain in the evening.
SaturdayJul 25	Showers	High 87°F31°CFeels 95°F35°C	Low 69°F20°C	Precip 0.15 in3.8 mm50%	Cloud 68%	Wind S 4 mph7 km/h	Saturday: Mostly cloudy and hot, with a high of 87°F30°C and morning low of 69°F21°C — feels like 93°F34°C. Light wind from the S around 4 mph7 km/h. 50% chance of light rain throughout the day. Humid. Saturday Night: Mostly cloudy, with a low around 69°F20°C. Light wind from the SSE around 4 mph6 km/h. 50% chance of showers overnight.
SundayJul 26	Hot	High 98°F37°CFeels 108°F42°C	Low 77°F25°C	Precip 0.01 in0.2 mm5%	Cloud 44%	Wind SSW 4 mph6 km/h	Sunday: Mostly cloudy and hot, with a high of 98°F37°C and morning low of 77°F25°C — feels like 108°F42°C. Light wind from the WSW around 4 mph6 km/h. Heat risk in the afternoon. Sunday Night: Partly cloudy, with a low around 77°F25°C. Light wind from the S around 4 mph7 km/h.
MondayJul 27	Hot	High 98°F36°CFeels 106°F41°C	Low 80°F27°C	Precip 0.03 in0.7 mm8%	Cloud 51%	Wind SSW 7 mph12 km/h	Monday: Mostly cloudy and hot, with a high of 98°F36°C and morning low of 80°F27°C — feels like 106°F41°C. Breezy from the SW at 7 to 9 mph11 to 14 km/h. Heat risk in the afternoon. Monday Night: Partly cloudy, with a low around 81°F27°C. Breezy from the SSW at 7 to 9 mph12 to 14 km/h.
TuesdayJul 28	Drizzle	High 98°F37°CFeels 105°F41°C	Low 82°F28°CFeels 87°F31°C	Precip 0.06 in1.4 mm18%	Cloud 37%	Wind WNW 7 mph12 km/h	Tuesday: Partly cloudy and hot, with a high of 98°F37°C and morning low of 82°F28°C — feels like 106°F41°C. Breezy from the WNW at 7 to 8 mph12 to 12 km/h. 18% chance of drizzle around midday. Heat risk in the afternoon. Tuesday Night: Partly cloudy, with a low around 84°F29°C. Breezy from the W at 7 to 9 mph12 to 14 km/h. 18% chance of drizzle throughout the night.
WednesdayJul 29	Clear	High 95°F35°C	Low 76°F24°C	Precip 0.04 in1 mm9%	Cloud 21%	Wind NE 6 mph9 km/h	Wednesday: Mostly clear and hot, with a high of 95°F35°C and morning low of 76°F24°C. Light wind from the NE around 5 mph9 km/h. Humid. Wednesday Night: Mostly clear, with a low around 78°F25°C. Light wind from the NE around 6 mph9 km/h.

15-Day Forecast

	Day	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Condition	Wind (mph)
	ThursdayJul 23	81°F27°C	65°F18°C	0 in0 mm· —	65%	Partly Cloudy	ENE 5 mph8 km/h
DayPartly cloudy and warm, with a high of 81°F27°C and morning low of 65°F18°C. Light wind from the NE around 5 mph9 km/h. NightOvercast, with a low around 72°F22°C. Light wind from the ENE around 4 mph7 km/h.
	FridayJul 24	75°F24°C	68°F20°C	0.15 in3.9 mm· 75%	91%	Light Rain	E 3 mph5 km/h
DayOvercast and warm, with a high of 75°F24°C and morning low of 68°F20°C. Light wind from the E around 3 mph5 km/h. 75% chance of light rain throughout the day. NightOvercast, with a low around 68°F20°C. Light wind from the E around 4 mph6 km/h. 63% chance of light rain in the evening.
	SaturdayJul 25	87°F31°C Feels 95°F35°C	69°F20°C	0.15 in3.8 mm· 50%	68%	Showers	S 4 mph7 km/h
DayMostly cloudy and hot, with a high of 87°F30°C and morning low of 69°F21°C — feels like 93°F34°C. Light wind from the S around 4 mph7 km/h. 50% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 69°F20°C. Light wind from the SSE around 4 mph6 km/h. 50% chance of showers overnight.
	SundayJul 26	98°F37°C Feels 108°F42°C	77°F25°C	0.01 in0.2 mm· 5%	44%	Hot	SSW 4 mph6 km/h
DayMostly cloudy and hot, with a high of 98°F37°C and morning low of 77°F25°C — feels like 108°F42°C. Light wind from the WSW around 4 mph6 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 77°F25°C. Light wind from the S around 4 mph7 km/h.
	MondayJul 27	98°F36°C Feels 106°F41°C	80°F27°C	0.03 in0.7 mm· 8%	51%	Hot	SSW 7 mph12 km/h
DayMostly cloudy and hot, with a high of 98°F36°C and morning low of 80°F27°C — feels like 106°F41°C. Breezy from the SW at 7 to 9 mph11 to 14 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Breezy from the SSW at 7 to 9 mph12 to 14 km/h.
	TuesdayJul 28	98°F37°C Feels 105°F41°C	82°F28°C Feels 87°F31°C	0.06 in1.4 mm· 18%	37%	Drizzle	WNW 7 mph12 km/h
DayPartly cloudy and hot, with a high of 98°F37°C and morning low of 82°F28°C — feels like 106°F41°C. Breezy from the WNW at 7 to 8 mph12 to 12 km/h. 18% chance of drizzle around midday. Heat risk in the afternoon. NightPartly cloudy, with a low around 84°F29°C. Breezy from the W at 7 to 9 mph12 to 14 km/h. 18% chance of drizzle throughout the night.
	WednesdayJul 29	95°F35°C	76°F24°C	0.04 in1 mm· 9%	21%	Clear	NE 6 mph9 km/h
DayMostly clear and hot, with a high of 95°F35°C and morning low of 76°F24°C. Light wind from the NE around 5 mph9 km/h. Humid. NightMostly clear, with a low around 78°F25°C. Light wind from the NE around 6 mph9 km/h.
	ThursdayJul 30	94°F34°C	74°F24°C	0.04 in1 mm· 13%	28%	Drizzle	ENE 5 mph9 km/h
DayPartly cloudy and hot, with a high of 94°F34°C and morning low of 74°F24°C. Light wind from the ENE around 5 mph9 km/h. NightMostly clear, with a low around 76°F24°C. Light wind from the E around 5 mph9 km/h. 13% chance of drizzle in the evening.
	FridayJul 31	93°F34°C	74°F24°C	0.08 in2.1 mm· 15%	39%	Showers	SE 5 mph8 km/h
DayPartly cloudy and hot, with a high of 93°F34°C and morning low of 74°F24°C. Light wind from the S around 5 mph8 km/h. 15% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 76°F24°C. Light wind from the SE around 5 mph8 km/h. 14% chance of showers throughout the night.
	SaturdayAug 1	93°F34°C	75°F24°C	0.08 in2.1 mm· 16%	35%	Drizzle	NW 5 mph9 km/h
DayPartly cloudy and hot, with a high of 93°F34°C and morning low of 75°F24°C. Light wind from the NW around 5 mph9 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 76°F24°C. Light wind from the SE around 5 mph9 km/h. 14% chance of drizzle throughout the night.
	SundayAug 2	93°F34°C	73°F23°C	0.06 in1.5 mm· 9%	33%	Clear	S 5 mph9 km/h
DayPartly cloudy and hot, with a high of 93°F34°C and morning low of 73°F23°C. Light wind from the SW around 6 mph9 km/h. NightPartly cloudy, with a low around 74°F24°C. Light wind from the SSE around 5 mph9 km/h.
	MondayAug 3	94°F34°C	75°F24°C	0.07 in1.9 mm· 19%	38%	Drizzle	SSW 6 mph10 km/h
DayPartly cloudy and hot, with a high of 94°F34°C and morning low of 75°F24°C. Breezy from the SSW at 6 to 7 mph10 to 11 km/h. 13% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 75°F24°C. Light wind from the S around 6 mph10 km/h. 19% chance of drizzle throughout the night.
	TuesdayAug 4	92°F34°C	75°F24°C	0.09 in2.3 mm· 16%	49%	Showers	SW 7 mph11 km/h
DayMostly cloudy and hot, with a high of 92°F34°C and morning low of 75°F24°C. Breezy from the SW at 7 mph11 km/h. 16% chance of showers throughout the day. Humid. NightPartly cloudy, with a low around 76°F25°C. Light wind from the SSW around 6 mph10 km/h. 14% chance of drizzle throughout the night.
	WednesdayAug 5	91°F33°C	75°F24°C	0.14 in3.5 mm· 19%	49%	Showers	SW 6 mph10 km/h
DayMostly cloudy and hot, with a high of 91°F33°C and morning low of 75°F24°C. Breezy from the SW at 7 mph10 km/h. 18% chance of showers throughout the day. Humid. NightPartly cloudy, with a low around 76°F24°C. Light wind from the SSW around 6 mph10 km/h. 19% chance of showers throughout the night.
	ThursdayAug 6	90°F32°C	73°F23°C	0.11 in2.8 mm· 17%	49%	Showers	SW 6 mph9 km/h
DayMostly cloudy and hot, with a high of 90°F32°C and morning low of 73°F23°C. Light wind from the WSW around 6 mph9 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 75°F24°C. Light wind from the SSW around 6 mph9 km/h. 17% chance of showers throughout the night.

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