Current Conditions

Saint Charles, Missouri

100°F38°C

Hot

Wind

SSW 6 mph10 km/h

Humidity

34%

Cloud Cover

23%

As of Wednesday, September 2, 2026 at 3:56 PM CDT

Today's Outlook

Day

Partly cloudy and hot, with a high of 100°F38°C. Light wind from the SSW around 6 mph10 km/h. Heat risk in the afternoon.

Night

Mostly clear, with a low around 87°F30°C. Breezy from the S at 6 to 8 mph10 to 12 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Hot	High 100°F38°C	Low 87°F30°CFeels 90°F32°C	Precip 0 in0 mm—	Cloud 20%	Wind SSW 6 mph10 km/h	Wednesday: Partly cloudy and hot, with a high of 100°F38°C. Light wind from the SSW around 6 mph10 km/h. Heat risk in the afternoon. Wednesday Night: Mostly clear, with a low around 87°F30°C. Breezy from the S at 6 to 8 mph10 to 12 km/h.
Hot	High 100°F38°C	Low 78°F25°C	Precip 0 in0 mm—	Cloud 8%	Wind SSW 7 mph11 km/h	Thursday: Mostly clear and hot, with a high of 100°F38°C and morning low of 78°F25°C. Breezy from the SSW at 7 mph11 km/h. Heat risk in the afternoon. Thursday Night: Mostly clear, with a low around 80°F27°C. Breezy from the S at 7 to 8 mph11 to 13 km/h.
Hot	High 100°F38°C	Low 77°F25°C	Precip 0 in0 mm—	Cloud 7%	Wind SSW 5 mph7 km/h	Friday: Mostly clear and hot, with a high of 100°F38°C and morning low of 77°F25°C. Light wind from the SW around 4 mph7 km/h. Heat risk in the afternoon. Friday Night: Mostly clear, with a low around 80°F26°C. Breezy from the S at 5 to 7 mph8 to 12 km/h.
Drizzle	High 100°F38°C	Low 78°F26°C	Precip 0.03 in0.7 mm28%	Cloud 34%	Wind NNE 4 mph7 km/h	Saturday: Partly cloudy and hot, with a high of 100°F38°C and morning low of 78°F26°C. Light wind from the NW around 3 mph6 km/h. 26% chance of drizzle in the afternoon. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 81°F27°C. Light wind from the ESE around 5 mph8 km/h. 28% chance of drizzle in the evening.
Drizzle	High 92°F33°CFeels 96°F35°C	Low 75°F24°C	Precip 0.02 in0.6 mm13%	Cloud 47%	Wind ENE 6 mph10 km/h	Sunday: Mostly cloudy and hot, with a high of 92°F33°C and morning low of 75°F24°C. Breezy from the ENE at 6 to 7 mph9 to 11 km/h. 12% chance of drizzle in the afternoon. Heat risk in the afternoon. Sunday Night: Partly cloudy, with a low around 78°F26°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. 13% chance of drizzle before dawn.
Clear	High 92°F34°C	Low 71°F22°C	Precip 0.01 in0.3 mm5%	Cloud 31%	Wind E 6 mph9 km/h	Monday: Partly cloudy and hot, with a high of 92°F34°C and morning low of 71°F22°C. Light wind from the E around 6 mph9 km/h. Monday Night: Partly cloudy, with a low around 74°F23°C. Breezy from the E at 6 to 7 mph10 to 11 km/h.
Hot	High 98°F37°C	Low 72°F22°C	Precip 0 in0 mm—	Cloud 29%	Wind SSE 7 mph11 km/h	Tuesday: Partly cloudy and hot, with a high of 98°F37°C and morning low of 72°F22°C. Breezy from the S at 6 to 7 mph10 to 12 km/h. Heat risk in the afternoon. Tuesday Night: Partly cloudy, with a low around 74°F23°C. Breezy from the SSE at 7 to 10 mph12 to 15 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	100°F38°C	87°F30°C Feels 90°F32°C	0 in0 mm· —	20%	Hot	SSW 6 mph10 km/h
DayPartly cloudy and hot, with a high of 100°F38°C. Light wind from the SSW around 6 mph10 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 87°F30°C. Breezy from the S at 6 to 8 mph10 to 12 km/h.
	ThursdaySep 3	100°F38°C	78°F25°C	0 in0 mm· —	8%	Hot	SSW 7 mph11 km/h
DayMostly clear and hot, with a high of 100°F38°C and morning low of 78°F25°C. Breezy from the SSW at 7 mph11 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 80°F27°C. Breezy from the S at 7 to 8 mph11 to 13 km/h.
	FridaySep 4	100°F38°C	77°F25°C	0 in0 mm· —	7%	Hot	SSW 5 mph7 km/h
DayMostly clear and hot, with a high of 100°F38°C and morning low of 77°F25°C. Light wind from the SW around 4 mph7 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 80°F26°C. Breezy from the S at 5 to 7 mph8 to 12 km/h.
	SaturdaySep 5	100°F38°C	78°F26°C	0.03 in0.7 mm· 28%	34%	Drizzle	NNE 4 mph7 km/h
DayPartly cloudy and hot, with a high of 100°F38°C and morning low of 78°F26°C. Light wind from the NW around 3 mph6 km/h. 26% chance of drizzle in the afternoon. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Light wind from the ESE around 5 mph8 km/h. 28% chance of drizzle in the evening.
	SundaySep 6	92°F33°C Feels 96°F35°C	75°F24°C	0.02 in0.6 mm· 13%	47%	Drizzle	ENE 6 mph10 km/h
DayMostly cloudy and hot, with a high of 92°F33°C and morning low of 75°F24°C. Breezy from the ENE at 6 to 7 mph9 to 11 km/h. 12% chance of drizzle in the afternoon. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. 13% chance of drizzle before dawn.
	MondaySep 7	92°F34°C	71°F22°C	0.01 in0.3 mm· 5%	31%	Clear	E 6 mph9 km/h
DayPartly cloudy and hot, with a high of 92°F34°C and morning low of 71°F22°C. Light wind from the E around 6 mph9 km/h. NightPartly cloudy, with a low around 74°F23°C. Breezy from the E at 6 to 7 mph10 to 11 km/h.
	TuesdaySep 8	98°F37°C	72°F22°C	0 in0 mm· —	29%	Hot	SSE 7 mph11 km/h
DayPartly cloudy and hot, with a high of 98°F37°C and morning low of 72°F22°C. Breezy from the S at 6 to 7 mph10 to 12 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 74°F23°C. Breezy from the SSE at 7 to 10 mph12 to 15 km/h.
	WednesdaySep 9	99°F37°C Feels 102°F39°C	79°F26°C	0.02 in0.4 mm· 10%	25%	Drizzle	SSW 8 mph13 km/h
DayPartly cloudy and hot, with a high of 99°F37°C and morning low of 79°F26°C. Breezy from the SSW at 8 to 9 mph13 to 14 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Breezy from the S at 8 to 9 mph13 to 15 km/h. 10% chance of drizzle in the evening.
	ThursdaySep 10	93°F34°C Feels 96°F36°C	77°F25°C	0.05 in1.2 mm· 13%	39%	Drizzle	SW 7 mph12 km/h
DayPartly cloudy and hot, with a high of 93°F34°C and morning low of 77°F25°C. Breezy from the SW at 7 mph11 km/h. 10% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 80°F27°C. Breezy from the SSW at 7 to 9 mph12 to 14 km/h. 13% chance of drizzle throughout the night.
	FridaySep 11	92°F33°C	74°F23°C	0.07 in1.7 mm· 13%	38%	Drizzle	S 7 mph11 km/h
DayPartly cloudy and hot, with a high of 92°F33°C and morning low of 74°F23°C. Breezy from the SSW at 7 mph11 km/h. 10% chance of drizzle throughout the day. NightPartly cloudy, with a low around 76°F24°C. Breezy from the S at 7 to 8 mph11 to 12 km/h. 13% chance of drizzle throughout the night.
	SaturdaySep 12	91°F33°C	73°F23°C	0.09 in2.2 mm· 18%	47%	Drizzle	S 8 mph12 km/h
DayPartly cloudy and hot, with a high of 91°F33°C and morning low of 73°F23°C. Breezy from the SSW at 8 mph13 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 75°F24°C. Breezy from the S at 7 to 8 mph12 to 13 km/h. 18% chance of drizzle throughout the night.
	SundaySep 13	90°F32°C	72°F22°C	0.1 in2.5 mm· 17%	49%	Showers	SSW 8 mph12 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 72°F22°C. Breezy from the SSW at 8 mph12 km/h. 17% chance of drizzle throughout the day. NightMostly cloudy, with a low around 74°F23°C. Breezy from the S at 7 to 8 mph12 to 13 km/h. 14% chance of showers throughout the night.
	MondaySep 14	90°F32°C	72°F22°C	0.13 in3.2 mm· 19%	47%	Showers	S 7 mph12 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 72°F22°C. Breezy from the SSW at 8 mph12 km/h. 19% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 74°F23°C. Breezy from the S at 7 to 8 mph12 to 12 km/h. 18% chance of showers throughout the night.
	TuesdaySep 15	87°F31°C	71°F21°C	0.13 in3.4 mm· 17%	49%	Showers	SSW 7 mph11 km/h
DayPartly cloudy and hot, with a high of 87°F31°C and morning low of 71°F21°C. Breezy from the SW at 7 mph11 km/h. 17% chance of showers throughout the day. NightPartly cloudy, with a low around 73°F23°C. Breezy from the S at 7 mph11 km/h. 17% chance of showers throughout the night.
	WednesdaySep 16	85°F30°C	67°F19°C	0.14 in3.5 mm· 16%	43%	Showers	E 6 mph10 km/h
DayPartly cloudy and warm, with a high of 85°F30°C and morning low of 67°F19°C. Breezy from the N at 6 to 7 mph10 to 11 km/h. 16% chance of showers throughout the day. NightPartly cloudy, with a low around 70°F21°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 12% chance of showers throughout the night.

Nearby Cities

Maryland Heights6 mi9 km Hazelwood6 mi10 km Saint Peters8 mi13 km Florissant9 mi14 km Overland9 mi14 km Creve Coeur9 mi15 km

About This Forecast

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Coordinates: 38.7839°N, 90.4812°W·Elevation: 147m·Timezone: America/Chicago·Population: 65,794