Current Conditions

Collinsville, Illinois

64°F18°C

Cloudy

Wind

NE 7 mph11 km/h

Humidity

73%

Cloud Cover

55%

As of Wednesday, September 23, 2026 at 12:53 AM CDT

Today's Outlook

Day

Overcast and warm, with a high of 69°F21°C and morning low of 60°F16°C. Breezy from the NNE at 7 to 8 mph12 to 13 km/h.

Night

Mostly cloudy, with a low around 62°F16°C. Light wind from the NE around 6 mph10 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Cloudy	High 69°F21°C	Low 60°F16°C	Precip 0 in0.1 mm1%	Cloud 80%	Wind NNE 7 mph11 km/h	Wednesday: Overcast and warm, with a high of 69°F21°C and morning low of 60°F16°C. Breezy from the NNE at 7 to 8 mph12 to 13 km/h. Wednesday Night: Mostly cloudy, with a low around 62°F16°C. Light wind from the NE around 6 mph10 km/h.
Cloudy	High 72°F22°C	Low 60°F16°C	Precip 0 in0 mm—	Cloud 83%	Wind NE 5 mph7 km/h	Thursday: Overcast and warm, with a high of 72°F22°C and morning low of 60°F16°C. Light wind from the NE around 5 mph8 km/h. Thursday Night: Mostly cloudy, with a low around 61°F16°C. Light wind from the NE around 4 mph7 km/h.
Cloudy	High 76°F25°C	Low 63°F17°C	Precip 0 in0.1 mm3%	Cloud 86%	Wind ENE 4 mph7 km/h	Friday: Overcast and warm, with a high of 76°F25°C and morning low of 63°F17°C. Light wind from the ENE around 5 mph7 km/h. Friday Night: Overcast, with a low around 63°F17°C. Light wind from the ENE around 4 mph7 km/h.
Drizzle	High 72°F22°C	Low 62°F17°C	Precip 0.06 in1.4 mm29%	Cloud 88%	Wind E 5 mph7 km/h	Saturday: Overcast and warm, with a high of 72°F22°C and morning low of 62°F17°C. Light wind from the E around 4 mph7 km/h. 28% chance of drizzle throughout the day. Dry air. Saturday Night: Overcast, with a low around 64°F18°C. Light wind from the E around 5 mph8 km/h. 29% chance of drizzle in the evening.
Drizzle	High 76°F24°C	Low 61°F16°C	Precip 0.05 in1.2 mm19%	Cloud 60%	Wind ENE 4 mph6 km/h	Sunday: Mostly cloudy and warm, with a high of 76°F24°C and morning low of 61°F16°C. Light wind from the E around 4 mph6 km/h. 19% chance of drizzle throughout the day. Sunday Night: Mostly cloudy, with a low around 62°F17°C. Light wind from the ENE around 4 mph7 km/h. 15% chance of drizzle overnight.
Clear	High 80°F27°C	Low 58°F14°C	Precip 0.01 in0.2 mm4%	Cloud 28%	Wind ENE 4 mph6 km/h	Monday: Mostly clear and warm, with a high of 80°F27°C and morning low of 58°F14°C. Light wind from the ENE around 4 mph6 km/h. Dry air. Monday Night: Partly cloudy, with a low around 60°F16°C. Light wind from the ENE around 4 mph7 km/h.
Showers	High 80°F27°C	Low 58°F15°C	Precip 0.13 in3.3 mm34%	Cloud 69%	Wind SSE 7 mph11 km/h	Tuesday: Mostly cloudy and warm, with a high of 80°F27°C and morning low of 58°F15°C. Breezy from the SSE at 7 to 9 mph12 to 14 km/h. 19% chance of light rain throughout the day. Tuesday Night: Mostly cloudy, with a low around 60°F16°C. Breezy from the SSE at 6 to 8 mph10 to 13 km/h. 34% chance of showers in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 23	69°F21°C	60°F16°C	0 in0.1 mm· 1%	80%	Cloudy	NNE 7 mph11 km/h
DayOvercast and warm, with a high of 69°F21°C and morning low of 60°F16°C. Breezy from the NNE at 7 to 8 mph12 to 13 km/h. NightMostly cloudy, with a low around 62°F16°C. Light wind from the NE around 6 mph10 km/h.
	ThursdaySep 24	72°F22°C	60°F16°C	0 in0 mm· —	83%	Cloudy	NE 5 mph7 km/h
DayOvercast and warm, with a high of 72°F22°C and morning low of 60°F16°C. Light wind from the NE around 5 mph8 km/h. NightMostly cloudy, with a low around 61°F16°C. Light wind from the NE around 4 mph7 km/h.
	FridaySep 25	76°F25°C	63°F17°C	0 in0.1 mm· 3%	86%	Cloudy	ENE 4 mph7 km/h
DayOvercast and warm, with a high of 76°F25°C and morning low of 63°F17°C. Light wind from the ENE around 5 mph7 km/h. NightOvercast, with a low around 63°F17°C. Light wind from the ENE around 4 mph7 km/h.
	SaturdaySep 26	72°F22°C	62°F17°C	0.06 in1.4 mm· 29%	88%	Drizzle	E 5 mph7 km/h
DayOvercast and warm, with a high of 72°F22°C and morning low of 62°F17°C. Light wind from the E around 4 mph7 km/h. 28% chance of drizzle throughout the day. Dry air. NightOvercast, with a low around 64°F18°C. Light wind from the E around 5 mph8 km/h. 29% chance of drizzle in the evening.
	SundaySep 27	76°F24°C	61°F16°C	0.05 in1.2 mm· 19%	60%	Drizzle	ENE 4 mph6 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 61°F16°C. Light wind from the E around 4 mph6 km/h. 19% chance of drizzle throughout the day. NightMostly cloudy, with a low around 62°F17°C. Light wind from the ENE around 4 mph7 km/h. 15% chance of drizzle overnight.
	MondaySep 28	80°F27°C	58°F14°C	0.01 in0.2 mm· 4%	28%	Clear	ENE 4 mph6 km/h
DayMostly clear and warm, with a high of 80°F27°C and morning low of 58°F14°C. Light wind from the ENE around 4 mph6 km/h. Dry air. NightPartly cloudy, with a low around 60°F16°C. Light wind from the ENE around 4 mph7 km/h.
	TuesdaySep 29	80°F27°C	58°F15°C	0.13 in3.3 mm· 34%	69%	Showers	SSE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 58°F15°C. Breezy from the SSE at 7 to 9 mph12 to 14 km/h. 19% chance of light rain throughout the day. NightMostly cloudy, with a low around 60°F16°C. Breezy from the SSE at 6 to 8 mph10 to 13 km/h. 34% chance of showers in the evening.
	WednesdaySep 30	74°F23°C	65°F19°C	0.45 in11.5 mm· 46%	80%	Light Rain	SW 8 mph13 km/h
DayOvercast and warm, with a high of 74°F23°C and morning low of 65°F19°C. Breezy from the WSW at 9 mph14 km/h. 46% chance of light rain throughout the day. NightMostly cloudy, with a low around 66°F19°C. Breezy from the SSW at 8 mph12 km/h. 42% chance of light rain throughout the night.
	ThursdayOct 1	74°F23°C	59°F15°C	0.2 in5 mm· 26%	53%	Showers	WNW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 59°F15°C. Breezy from the WNW at 8 to 9 mph13 to 14 km/h. 22% chance of showers throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the WNW at 7 mph11 km/h. 26% chance of showers throughout the night.
	FridayOct 2	75°F24°C	57°F14°C	0.15 in3.7 mm· 19%	47%	Showers	SSW 7 mph11 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 57°F14°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. 17% chance of showers throughout the day. NightPartly cloudy, with a low around 59°F15°C. Light wind from the S around 6 mph10 km/h. 19% chance of showers throughout the night.
	SaturdayOct 3	76°F25°C	59°F15°C	0.12 in3.1 mm· 15%	53%	Showers	SSW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 76°F25°C and morning low of 59°F15°C. Breezy from the SSW at 7 to 8 mph11 to 13 km/h. 15% chance of drizzle throughout the day. NightMostly cloudy, with a low around 60°F16°C. Breezy from the S at 7 to 8 mph11 to 12 km/h. 13% chance of showers throughout the night.
	SundayOct 4	72°F22°C	58°F14°C	0.17 in4.3 mm· 22%	51%	Showers	WNW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 58°F14°C. Breezy from the WNW at 8 to 9 mph13 to 14 km/h. 22% chance of showers throughout the day. NightPartly cloudy, with a low around 60°F16°C. Breezy from the WNW at 7 to 8 mph12 to 12 km/h. 19% chance of showers throughout the night.
	MondayOct 5	72°F22°C	54°F12°C	0.11 in2.8 mm· 16%	49%	Showers	WNW 7 mph11 km/h
DayPartly cloudy and warm, with a high of 72°F22°C and morning low of 54°F12°C. Breezy from the WNW at 7 to 8 mph11 to 12 km/h. 16% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 57°F14°C. Breezy from the WNW at 7 mph10 km/h. 12% chance of showers throughout the night.
	TuesdayOct 6	72°F22°C	54°F12°C	0.09 in2.2 mm· 16%	43%	Drizzle	W 7 mph11 km/h
DayPartly cloudy and warm, with a high of 72°F22°C and morning low of 54°F12°C. Breezy from the W at 7 to 8 mph11 to 13 km/h. 14% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 56°F13°C. Light wind from the W around 6 mph10 km/h. 16% chance of drizzle throughout the night.
	WednesdayOct 7	71°F22°C	53°F12°C	0.07 in1.9 mm· 12%	40%	Drizzle	WNW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 53°F12°C. Breezy from the WNW at 8 to 9 mph12 to 14 km/h. 12% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 56°F13°C. Breezy from the WNW at 7 mph11 km/h. 11% chance of drizzle throughout the night.

Nearby Cities

Fairview Heights6 mi9 km O'Fallon7 mi11 km Granite City9 mi15 km East Saint Louis10 mi15 km Edwardsville10 mi16 km Belleville10 mi17 km

About This Forecast

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Coordinates: 38.6703°N, 89.9845°W·Elevation: 171m·Timezone: America/Chicago·Population: 24,754