Current Conditions

St. Charles, Illinois

82°F28°C

Hot

Feels like86°F30°C

Wind

SW 7 mph12 km/h

Humidity

74%

Cloud Cover

17%

As of Tuesday, September 1, 2026 at 9:07 PM CDT

Today's Outlook

Night

Mostly clear, with a low around 77°F25°C. Breezy from the SW at 8 mph12 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Hot	High 96°F35°CFeels 103°F39°C	Low 75°F24°C	Precip 0 in0.1 mm7%	Cloud 25%	Wind SW 8 mph13 km/h	Wednesday: Partly cloudy and hot, with a high of 96°F35°C and morning low of 75°F24°C — feels like 102°F39°C. Breezy from the SW at 9 to 11 mph14 to 17 km/h. Heat risk in the afternoon. Wednesday Night: Mostly clear, with a low around 77°F25°C. Breezy from the SW at 8 mph12 km/h.
Drizzle	High 91°F33°CFeels 97°F36°C	Low 75°F24°C	Precip 0.01 in0.3 mm10%	Cloud 38%	Wind SSW 6 mph10 km/h	Thursday: Mostly cloudy and hot, with a high of 91°F33°C and morning low of 75°F24°C — feels like 97°F36°C. Light wind from the SW around 6 mph9 km/h. 10% chance of drizzle. Heat risk in the afternoon. Thursday Night: Mostly clear, with a low around 77°F25°C. Breezy from the SSW at 6 to 8 mph10 to 13 km/h.
Drizzle	High 91°F33°CFeels 98°F36°C	Low 75°F24°C	Precip 0.05 in1.3 mm16%	Cloud 48%	Wind SE 6 mph9 km/h	Friday: Mostly cloudy and hot, with a high of 91°F33°C and morning low of 75°F24°C — feels like 97°F36°C. Light wind from the SE around 6 mph9 km/h. 16% chance of drizzle in the afternoon. Heat risk in the afternoon. Friday Night: Partly cloudy, with a low around 75°F24°C. Light wind from the ESE around 5 mph8 km/h. 15% chance of drizzle throughout the night.
Showers	High 85°F30°CFeels 92°F33°C	Low 73°F23°C	Precip 0.18 in4.5 mm33%	Cloud 58%	Wind ENE 6 mph9 km/h	Saturday: Mostly cloudy and warm, with a high of 85°F30°C and morning low of 73°F23°C — feels like 91°F33°C. Light wind from the ENE around 6 mph9 km/h. 33% chance of showers throughout the day. Heavy, humid air. Saturday Night: Mostly cloudy, with a low around 74°F23°C. Light wind from the ENE around 6 mph9 km/h. 25% chance of showers throughout the night.
Drizzle	High 83°F28°C	Low 70°F21°C	Precip 0.09 in2.2 mm17%	Cloud 61%	Wind E 5 mph9 km/h	Sunday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 70°F21°C. Light wind from the E around 5 mph9 km/h. 17% chance of drizzle throughout the day. Humid. Sunday Night: Mostly cloudy, with a low around 71°F22°C. Light wind from the E around 5 mph8 km/h. 11% chance of drizzle throughout the night.
Drizzle	High 82°F28°C	Low 67°F19°C	Precip 0.05 in1.3 mm14%	Cloud 69%	Wind ESE 6 mph9 km/h	Monday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 67°F19°C. Breezy from the SE at 6 to 7 mph9 to 11 km/h. 14% chance of drizzle throughout the day. Monday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the ESE at 6 to 7 mph9 to 11 km/h.
Showers	High 85°F30°CFeels 88°F31°C	Low 68°F20°C	Precip 0.11 in2.7 mm19%	Cloud 66%	Wind SSE 8 mph12 km/h	Tuesday: Mostly cloudy and warm, with a high of 85°F30°C and morning low of 68°F20°C. Breezy from the S at 8 to 9 mph13 to 15 km/h. 19% chance of light rain throughout the day. Humid. Tuesday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h. 13% chance of drizzle throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	96°F35°C Feels 103°F39°C	75°F24°C	0 in0.1 mm· 7%	25%	Hot	SW 8 mph13 km/h
DayPartly cloudy and hot, with a high of 96°F35°C and morning low of 75°F24°C — feels like 102°F39°C. Breezy from the SW at 9 to 11 mph14 to 17 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 77°F25°C. Breezy from the SW at 8 mph12 km/h.
	ThursdaySep 3	91°F33°C Feels 97°F36°C	75°F24°C	0.01 in0.3 mm· 10%	38%	Drizzle	SSW 6 mph10 km/h
DayMostly cloudy and hot, with a high of 91°F33°C and morning low of 75°F24°C — feels like 97°F36°C. Light wind from the SW around 6 mph9 km/h. 10% chance of drizzle. Heat risk in the afternoon. NightMostly clear, with a low around 77°F25°C. Breezy from the SSW at 6 to 8 mph10 to 13 km/h.
	FridaySep 4	91°F33°C Feels 98°F36°C	75°F24°C	0.05 in1.3 mm· 16%	48%	Drizzle	SE 6 mph9 km/h
DayMostly cloudy and hot, with a high of 91°F33°C and morning low of 75°F24°C — feels like 97°F36°C. Light wind from the SE around 6 mph9 km/h. 16% chance of drizzle in the afternoon. Heat risk in the afternoon. NightPartly cloudy, with a low around 75°F24°C. Light wind from the ESE around 5 mph8 km/h. 15% chance of drizzle throughout the night.
	SaturdaySep 5	85°F30°C Feels 92°F33°C	73°F23°C	0.18 in4.5 mm· 33%	58%	Showers	ENE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 85°F30°C and morning low of 73°F23°C — feels like 91°F33°C. Light wind from the ENE around 6 mph9 km/h. 33% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 74°F23°C. Light wind from the ENE around 6 mph9 km/h. 25% chance of showers throughout the night.
	SundaySep 6	83°F28°C	70°F21°C	0.09 in2.2 mm· 17%	61%	Drizzle	E 5 mph9 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 70°F21°C. Light wind from the E around 5 mph9 km/h. 17% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 71°F22°C. Light wind from the E around 5 mph8 km/h. 11% chance of drizzle throughout the night.
	MondaySep 7	82°F28°C	67°F19°C	0.05 in1.3 mm· 14%	69%	Drizzle	ESE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 67°F19°C. Breezy from the SE at 6 to 7 mph9 to 11 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 68°F20°C. Breezy from the ESE at 6 to 7 mph9 to 11 km/h.
	TuesdaySep 8	85°F30°C Feels 88°F31°C	68°F20°C	0.11 in2.7 mm· 19%	66%	Showers	SSE 8 mph12 km/h
DayMostly cloudy and warm, with a high of 85°F30°C and morning low of 68°F20°C. Breezy from the S at 8 to 9 mph13 to 15 km/h. 19% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 69°F21°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h. 13% chance of drizzle throughout the night.
	WednesdaySep 9	89°F32°C Feels 95°F35°C	73°F23°C	0.06 in1.6 mm· 18%	47%	Drizzle	SW 8 mph13 km/h
DayMostly cloudy and hot, with a high of 89°F32°C and morning low of 73°F23°C — feels like 95°F35°C. Breezy from the SW at 9 to 10 mph14 to 16 km/h. 18% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 74°F23°C. Breezy from the SSW at 8 mph12 km/h. 13% chance of drizzle throughout the night.
	ThursdaySep 10	85°F29°C	72°F22°C	0.16 in4.1 mm· 22%	55%	Showers	WSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 85°F29°C and morning low of 72°F22°C. Breezy from the WSW at 8 to 9 mph13 to 15 km/h. 18% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 73°F23°C. Breezy from the SW at 8 mph12 km/h. 22% chance of showers throughout the night.
	FridaySep 11	81°F27°C	68°F20°C	0.24 in6.1 mm· 30%	59%	Showers	WSW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 68°F20°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 30% chance of showers throughout the day. NightMostly cloudy, with a low around 70°F21°C. Breezy from the SW at 7 mph12 km/h. 28% chance of showers throughout the night.
	SaturdaySep 12	79°F26°C	65°F19°C	0.15 in3.9 mm· 17%	57%	Showers	WSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 65°F19°C. Breezy from the WSW at 9 mph14 km/h. 17% chance of showers throughout the day. NightMostly cloudy, with a low around 67°F19°C. Breezy from the SW at 7 mph12 km/h. 17% chance of showers throughout the night.
	SundaySep 13	78°F26°C	63°F17°C	0.14 in3.6 mm· 17%	59%	Showers	S 8 mph12 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 63°F17°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 16% chance of showers throughout the day. NightMostly cloudy, with a low around 64°F18°C. Breezy from the S at 7 to 8 mph12 to 12 km/h. 17% chance of showers throughout the night.
	MondaySep 14	78°F25°C	63°F17°C	0.11 in2.7 mm· 19%	60%	Showers	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 63°F17°C. Breezy from the SW at 9 mph14 km/h. 19% chance of drizzle throughout the day. NightMostly cloudy, with a low around 65°F18°C. Breezy from the SSW at 7 to 8 mph12 to 12 km/h. 19% chance of showers throughout the night.
	TuesdaySep 15	77°F25°C	63°F17°C	0.14 in3.5 mm· 21%	53%	Showers	SW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 63°F17°C. Breezy from the WSW at 8 to 9 mph13 to 15 km/h. 18% chance of showers throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the SW at 7 mph11 km/h. 21% chance of showers throughout the night.
	WednesdaySep 16	76°F24°C	60°F16°C	0.11 in2.7 mm· 18%	50%	Showers	W 8 mph12 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 60°F16°C. Breezy from the W at 8 to 9 mph13 to 15 km/h. 18% chance of showers throughout the day. NightPartly cloudy, with a low around 62°F16°C. Breezy from the W at 7 mph11 km/h. 15% chance of showers throughout the night.

Nearby Cities

Geneva2 mi3 km Batavia4 mi7 km Wasco5 mi8 km South Elgin6 mi9 km West Chicago6 mi9 km North Aurora8 mi12 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: 41.9142°N, 88.3087°W·Elevation: 223m·Timezone: America/Chicago·Population: 32,974