Current Conditions

Alton, Illinois

85°F29°C

Light Rain

Feels like92°F33°C

Wind

ESE 4 mph6 km/h

Humidity

70%

Cloud Cover

91%

As of Wednesday, August 12, 2026 at 7:36 PM CDT

Today's Outlook

Night

Overcast, with a low around 79°F26°C. Light wind from the ESE around 4 mph7 km/h. 38% chance of light rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Light Rain	High 92°F33°CFeels 99°F37°C	Low 79°F26°C	Precip 0.09 in2.2 mm40%	Cloud 90%	Wind SE 5 mph7 km/h	Wednesday: Overcast and hot, with a high of 92°F33°C — feels like 99°F37°C. Light wind from the SW around 5 mph8 km/h. 40% chance of light rain in the afternoon. Heat risk in the afternoon. Wednesday Night: Overcast, with a low around 79°F26°C. Light wind from the ESE around 4 mph7 km/h. 38% chance of light rain throughout the night.
Drizzle	High 91°F33°CFeels 99°F37°C	Low 76°F24°C	Precip 0.02 in0.6 mm10%	Cloud 85%	Wind ESE 5 mph8 km/h	Thursday: Overcast and hot, with a high of 91°F33°C and morning low of 76°F24°C — feels like 99°F37°C. Light wind from the SE around 4 mph7 km/h. 10% chance of drizzle around midday. Heat risk in the afternoon. Thursday Night: Mostly cloudy, with a low around 76°F24°C. Breezy from the ESE at 5 to 8 mph9 to 12 km/h. 10% chance of drizzle overnight.
Drizzle	High 93°F34°CFeels 102°F39°C	Low 78°F25°C	Precip 0.02 in0.4 mm11%	Cloud 81%	Wind SE 5 mph9 km/h	Friday: Overcast and hot, with a high of 93°F34°C and morning low of 78°F25°C — feels like 102°F39°C. Light wind from the SE around 5 mph8 km/h. 11% chance of drizzle in the morning. Heat risk in the afternoon. Friday Night: Mostly cloudy, with a low around 79°F26°C. Breezy from the SE at 6 to 7 mph10 to 12 km/h.
Drizzle	High 96°F36°CFeels 103°F40°C	Low 79°F26°C	Precip 0.05 in1.2 mm15%	Cloud 62%	Wind S 6 mph9 km/h	Saturday: Mostly cloudy and hot, with a high of 96°F36°C and morning low of 79°F26°C — feels like 104°F40°C. Breezy from the SSW at 5 to 7 mph9 to 11 km/h. 15% chance of drizzle in the morning. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 81°F27°C. Breezy from the SSE at 6 to 7 mph9 to 11 km/h. 12% chance of drizzle before dawn.
Drizzle	High 99°F37°CFeels 106°F41°C	Low 80°F27°C	Precip 0.02 in0.5 mm15%	Cloud 42%	Wind W 7 mph11 km/h	Sunday: Partly cloudy and hot, with a high of 99°F37°C and morning low of 80°F27°C — feels like 106°F41°C. Breezy from the W at 7 mph10 km/h. Heat risk in the afternoon. Sunday Night: Partly cloudy, with a low around 82°F28°C. Breezy from the W at 7 mph11 km/h. 15% chance of drizzle in the evening.
Showers	High 88°F31°CFeels 92°F33°C	Low 74°F23°C	Precip 0.07 in1.7 mm22%	Cloud 57%	Wind N 6 mph10 km/h	Monday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 74°F23°C. Light wind from the NNW around 6 mph10 km/h. 16% chance of showers in the morning. Humid. Monday Night: Mostly cloudy, with a low around 76°F25°C. Light wind from the N around 6 mph10 km/h. 22% chance of showers before dawn.
Showers	High 91°F33°CFeels 94°F34°C	Low 71°F22°C	Precip 0.06 in1.6 mm12%	Cloud 34%	Wind E 4 mph7 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 4 mph6 km/h. 12% chance of showers in the morning. Humid. Tuesday Night: Partly cloudy, with a low around 72°F22°C. Light wind from the E around 5 mph8 km/h. 12% chance of drizzle before dawn.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdayAug 12	92°F33°C Feels 99°F37°C	79°F26°C	0.09 in2.2 mm· 40%	90%	Light Rain	SE 5 mph7 km/h
DayOvercast and hot, with a high of 92°F33°C — feels like 99°F37°C. Light wind from the SW around 5 mph8 km/h. 40% chance of light rain in the afternoon. Heat risk in the afternoon. NightOvercast, with a low around 79°F26°C. Light wind from the ESE around 4 mph7 km/h. 38% chance of light rain throughout the night.
	ThursdayAug 13	91°F33°C Feels 99°F37°C	76°F24°C	0.02 in0.6 mm· 10%	85%	Drizzle	ESE 5 mph8 km/h
DayOvercast and hot, with a high of 91°F33°C and morning low of 76°F24°C — feels like 99°F37°C. Light wind from the SE around 4 mph7 km/h. 10% chance of drizzle around midday. Heat risk in the afternoon. NightMostly cloudy, with a low around 76°F24°C. Breezy from the ESE at 5 to 8 mph9 to 12 km/h. 10% chance of drizzle overnight.
	FridayAug 14	93°F34°C Feels 102°F39°C	78°F25°C	0.02 in0.4 mm· 11%	81%	Drizzle	SE 5 mph9 km/h
DayOvercast and hot, with a high of 93°F34°C and morning low of 78°F25°C — feels like 102°F39°C. Light wind from the SE around 5 mph8 km/h. 11% chance of drizzle in the morning. Heat risk in the afternoon. NightMostly cloudy, with a low around 79°F26°C. Breezy from the SE at 6 to 7 mph10 to 12 km/h.
	SaturdayAug 15	96°F36°C Feels 103°F40°C	79°F26°C	0.05 in1.2 mm· 15%	62%	Drizzle	S 6 mph9 km/h
DayMostly cloudy and hot, with a high of 96°F36°C and morning low of 79°F26°C — feels like 104°F40°C. Breezy from the SSW at 5 to 7 mph9 to 11 km/h. 15% chance of drizzle in the morning. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Breezy from the SSE at 6 to 7 mph9 to 11 km/h. 12% chance of drizzle before dawn.
	SundayAug 16	99°F37°C Feels 106°F41°C	80°F27°C	0.02 in0.5 mm· 15%	42%	Drizzle	W 7 mph11 km/h
DayPartly cloudy and hot, with a high of 99°F37°C and morning low of 80°F27°C — feels like 106°F41°C. Breezy from the W at 7 mph10 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 82°F28°C. Breezy from the W at 7 mph11 km/h. 15% chance of drizzle in the evening.
	MondayAug 17	88°F31°C Feels 92°F33°C	74°F23°C	0.07 in1.7 mm· 22%	57%	Showers	N 6 mph10 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 74°F23°C. Light wind from the NNW around 6 mph10 km/h. 16% chance of showers in the morning. Humid. NightMostly cloudy, with a low around 76°F25°C. Light wind from the N around 6 mph10 km/h. 22% chance of showers before dawn.
	TuesdayAug 18	91°F33°C Feels 94°F34°C	71°F22°C	0.06 in1.6 mm· 12%	34%	Showers	E 4 mph7 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 4 mph6 km/h. 12% chance of showers in the morning. Humid. NightPartly cloudy, with a low around 72°F22°C. Light wind from the E around 5 mph8 km/h. 12% chance of drizzle before dawn.
	WednesdayAug 19	98°F37°C	75°F24°C	0.02 in0.4 mm· 7%	49%	Hot	S 7 mph11 km/h
DayMostly cloudy and hot, with a high of 98°F37°C and morning low of 75°F24°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 77°F25°C. Breezy from the SSE at 7 mph11 km/h.
	ThursdayAug 20	94°F34°C	76°F24°C	0.05 in1.2 mm· 10%	42%	Drizzle	NW 6 mph10 km/h
DayPartly cloudy and hot, with a high of 94°F34°C and morning low of 76°F24°C. Light wind from the NW around 6 mph10 km/h. 10% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 79°F26°C. Breezy from the NE at 6 to 7 mph10 to 12 km/h. 10% chance of drizzle throughout the night.
	FridayAug 21	93°F34°C	73°F23°C	0.05 in1.2 mm· 11%	37%	Drizzle	E 6 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. 11% chance of drizzle in the afternoon. NightPartly cloudy, with a low around 75°F24°C. Light wind from the E around 6 mph10 km/h. 10% chance of drizzle throughout the night.
	SaturdayAug 22	93°F34°C	72°F22°C	0.04 in1.1 mm· 6%	34%	Clear	E 6 mph10 km/h
DayPartly cloudy and hot, with a high of 93°F34°C and morning low of 72°F22°C. Light wind from the W around 6 mph10 km/h. NightPartly cloudy, with a low around 74°F23°C. Light wind from the E around 6 mph10 km/h.
	SundayAug 23	93°F34°C	72°F22°C	0.02 in0.5 mm· 7%	33%	Clear	NNE 6 mph10 km/h
DayPartly cloudy and hot, with a high of 93°F34°C and morning low of 72°F22°C. Light wind from the WNW around 6 mph10 km/h. NightPartly cloudy, with a low around 74°F23°C. Light wind from the ENE around 6 mph10 km/h.
	MondayAug 24	91°F33°C	71°F22°C	0.03 in0.8 mm· 7%	33%	Clear	NE 6 mph10 km/h
DayPartly cloudy and hot, with a high of 91°F33°C and morning low of 71°F22°C. Light wind from the N around 6 mph10 km/h. NightPartly cloudy, with a low around 73°F23°C. Light wind from the ENE around 6 mph10 km/h.
	TuesdayAug 25	91°F33°C	70°F21°C	0.02 in0.6 mm· 8%	35%	Clear	E 6 mph9 km/h
DayPartly cloudy and hot, with a high of 91°F33°C and morning low of 70°F21°C. Light wind from the E around 6 mph9 km/h. NightPartly cloudy, with a low around 72°F22°C. Light wind from the E around 6 mph9 km/h.
	WednesdayAug 26	91°F33°C	71°F22°C	0.03 in0.7 mm· 10%	37%	Drizzle	E 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 E around 6 mph9 km/h. 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.

Nearby Cities

Upper Alton2 mi4 km Godfrey4 mi7 km Old Jamestown7 mi11 km Spanish Lake7 mi12 km Florissant10 mi16 km Ferguson12 mi19 km

About This Forecast

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Coordinates: 38.8906°N, 90.1843°W·Elevation: 150m·Timezone: America/Chicago·Population: 27,003