Current Conditions

Collinsville, Illinois

76°F24°C

Drizzle

Wind

S 5 mph8 km/h

Humidity

88%

Cloud Cover

82%

As of Thursday, August 13, 2026 at 6:27 AM CDT

Today's Outlook

Day

Overcast and hot, with a high of 95°F35°C and morning low of 76°F24°C — feels like 106°F41°C. Light wind from the S around 5 mph7 km/h. 20% chance of drizzle throughout the day. Heat risk in the afternoon.

Night

Overcast, with a low around 76°F24°C. Breezy from the SE at 6 to 8 mph10 to 14 km/h. 20% chance of drizzle throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 95°F35°CFeels 105°F41°C	Low 76°F24°C	Precip 0.06 in1.5 mm20%	Cloud 86%	Wind SSE 5 mph8 km/h	Thursday: Overcast and hot, with a high of 95°F35°C and morning low of 76°F24°C — feels like 106°F41°C. Light wind from the S around 5 mph7 km/h. 20% chance of drizzle throughout the day. Heat risk in the afternoon. Thursday Night: Overcast, with a low around 76°F24°C. Breezy from the SE at 6 to 8 mph10 to 14 km/h. 20% chance of drizzle throughout the night.
Hot	High 96°F35°CFeels 105°F40°C	Low 79°F26°C	Precip 0.02 in0.4 mm6%	Cloud 73%	Wind SSE 5 mph8 km/h	Friday: Overcast and hot, with a high of 96°F35°C and morning low of 79°F26°C — feels like 104°F40°C. Light wind from the S around 4 mph7 km/h. Heat risk in the afternoon. Friday Night: Mostly cloudy, with a low around 81°F27°C. Breezy from the SSE at 6 to 9 mph10 to 14 km/h.
Drizzle	High 97°F36°CFeels 103°F39°C	Low 79°F26°C	Precip 0.02 in0.6 mm11%	Cloud 64%	Wind S 5 mph8 km/h	Saturday: Overcast and hot, with a high of 97°F36°C and morning low of 79°F26°C — feels like 102°F39°C. Light wind from the SW around 5 mph8 km/h. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 81°F27°C. Light wind from the SSE around 6 mph9 km/h. 11% chance of drizzle overnight.
Showers	High 98°F37°CFeels 106°F41°C	Low 81°F27°CFeels 84°F29°C	Precip 0.03 in0.8 mm18%	Cloud 43%	Wind W 7 mph11 km/h	Sunday: Partly cloudy and hot, with a high of 98°F37°C and morning low of 81°F27°C — feels like 106°F41°C. Breezy from the W at 7 mph11 km/h. Heat risk in the afternoon. Sunday Night: Partly cloudy, with a low around 83°F28°C. Breezy from the W at 7 mph12 km/h. 18% chance of showers in the evening.
Drizzle	High 88°F31°C	Low 73°F23°C	Precip 0.02 in0.6 mm17%	Cloud 51%	Wind NNW 6 mph10 km/h	Monday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 73°F23°C. Breezy from the NNW at 7 to 8 mph11 to 12 km/h. Humid. Monday Night: Partly cloudy, with a low around 75°F24°C. Light wind from the NNW around 6 mph10 km/h. 17% chance of drizzle overnight.
Clear	High 93°F34°C	Low 69°F21°C	Precip 0.01 in0.2 mm3%	Cloud 22%	Wind ESE 4 mph7 km/h	Tuesday: Mostly clear and hot, with a high of 93°F34°C and morning low of 69°F21°C. Light wind from the SE around 4 mph6 km/h. Tuesday Night: Partly cloudy, with a low around 71°F22°C. Breezy from the ESE at 5 to 7 mph8 to 12 km/h.
Drizzle	High 96°F36°C	Low 76°F24°C	Precip 0.07 in1.8 mm22%	Cloud 56%	Wind SSW 8 mph12 km/h	Wednesday: Mostly cloudy and hot, with a high of 96°F36°C and morning low of 76°F24°C. Breezy from the SSW at 8 to 9 mph13 to 14 km/h. 15% chance of drizzle throughout the day. Heat risk in the afternoon. Wednesday Night: Mostly cloudy, with a low around 78°F25°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h. 22% chance of drizzle throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	95°F35°C Feels 105°F41°C	76°F24°C	0.06 in1.5 mm· 20%	86%	Drizzle	SSE 5 mph8 km/h
DayOvercast and hot, with a high of 95°F35°C and morning low of 76°F24°C — feels like 106°F41°C. Light wind from the S around 5 mph7 km/h. 20% chance of drizzle throughout the day. Heat risk in the afternoon. NightOvercast, with a low around 76°F24°C. Breezy from the SE at 6 to 8 mph10 to 14 km/h. 20% chance of drizzle throughout the night.
	FridayAug 14	96°F35°C Feels 105°F40°C	79°F26°C	0.02 in0.4 mm· 6%	73%	Hot	SSE 5 mph8 km/h
DayOvercast and hot, with a high of 96°F35°C and morning low of 79°F26°C — feels like 104°F40°C. Light wind from the S around 4 mph7 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 81°F27°C. Breezy from the SSE at 6 to 9 mph10 to 14 km/h.
	SaturdayAug 15	97°F36°C Feels 103°F39°C	79°F26°C	0.02 in0.6 mm· 11%	64%	Drizzle	S 5 mph8 km/h
DayOvercast and hot, with a high of 97°F36°C and morning low of 79°F26°C — feels like 102°F39°C. Light wind from the SW around 5 mph8 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Light wind from the SSE around 6 mph9 km/h. 11% chance of drizzle overnight.
	SundayAug 16	98°F37°C Feels 106°F41°C	81°F27°C Feels 84°F29°C	0.03 in0.8 mm· 18%	43%	Showers	W 7 mph11 km/h
DayPartly cloudy and hot, with a high of 98°F37°C and morning low of 81°F27°C — feels like 106°F41°C. Breezy from the W at 7 mph11 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 83°F28°C. Breezy from the W at 7 mph12 km/h. 18% chance of showers in the evening.
	MondayAug 17	88°F31°C	73°F23°C	0.02 in0.6 mm· 17%	51%	Drizzle	NNW 6 mph10 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 73°F23°C. Breezy from the NNW at 7 to 8 mph11 to 12 km/h. Humid. NightPartly cloudy, with a low around 75°F24°C. Light wind from the NNW around 6 mph10 km/h. 17% chance of drizzle overnight.
	TuesdayAug 18	93°F34°C	69°F21°C	0.01 in0.2 mm· 3%	22%	Clear	ESE 4 mph7 km/h
DayMostly clear and hot, with a high of 93°F34°C and morning low of 69°F21°C. Light wind from the SE around 4 mph6 km/h. NightPartly cloudy, with a low around 71°F22°C. Breezy from the ESE at 5 to 7 mph8 to 12 km/h.
	WednesdayAug 19	96°F36°C	76°F24°C	0.07 in1.8 mm· 22%	56%	Drizzle	SSW 8 mph12 km/h
DayMostly cloudy and hot, with a high of 96°F36°C and morning low of 76°F24°C. Breezy from the SSW at 8 to 9 mph13 to 14 km/h. 15% chance of drizzle throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 78°F25°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h. 22% chance of drizzle throughout the night.
	ThursdayAug 20	89°F32°C	74°F23°C	0.09 in2.2 mm· 15%	45%	Showers	N 6 mph10 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 74°F23°C. Light wind from the NNW around 6 mph10 km/h. 14% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 76°F25°C. Breezy from the N at 7 mph11 km/h. 15% chance of showers throughout the night.
	FridayAug 21	87°F31°C	70°F21°C	0.08 in2.1 mm· 11%	41%	Showers	NE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 87°F31°C and morning low of 70°F21°C. Light wind from the NNE around 5 mph9 km/h. 11% chance of showers throughout the day. NightPartly cloudy, with a low around 72°F22°C. Light wind from the NE around 6 mph9 km/h. 11% chance of drizzle throughout the night.
	SaturdayAug 22	89°F32°C	69°F21°C	0.09 in2.2 mm· 13%	35%	Showers	ENE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 69°F21°C. Light wind from the NE around 6 mph9 km/h. 13% chance of drizzle in the morning. NightPartly cloudy, with a low around 70°F21°C. Light wind from the ENE around 6 mph9 km/h. 12% chance of showers throughout the night.
	SundayAug 23	90°F32°C	69°F21°C	0.06 in1.5 mm· 8%	29%	Clear	E 6 mph9 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 69°F21°C. Light wind from the E around 6 mph9 km/h. NightMostly clear, with a low around 71°F22°C. Light wind from the E around 6 mph9 km/h.
	MondayAug 24	92°F33°C	69°F21°C	0.02 in0.5 mm· 5%	28%	Clear	E 6 mph9 km/h
DayPartly cloudy and hot, with a high of 92°F33°C and morning low of 69°F21°C. Light wind from the E around 6 mph9 km/h. NightPartly cloudy, with a low around 71°F22°C. Light wind from the E around 6 mph9 km/h.
	TuesdayAug 25	93°F34°C	71°F21°C	0.02 in0.4 mm· 5%	31%	Clear	ESE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 93°F34°C and morning low of 71°F21°C. Light wind from the SSE around 5 mph9 km/h. NightPartly cloudy, with a low around 73°F23°C. Light wind from the ESE around 6 mph9 km/h.
	WednesdayAug 26	94°F34°C	72°F22°C	0.02 in0.4 mm· 9%	34%	Clear	ESE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 94°F34°C and morning low of 72°F22°C. Light wind from the S around 5 mph9 km/h. NightPartly cloudy, with a low around 74°F23°C. Light wind from the E around 6 mph9 km/h.
	ThursdayAug 27	92°F34°C	71°F22°C	0.03 in0.8 mm· 12%	46%	Drizzle	E 6 mph9 km/h
DayMostly cloudy and hot, with a high of 92°F34°C and morning low of 71°F22°C. Light wind from the S around 6 mph9 km/h. 11% chance of drizzle in the morning. NightPartly cloudy, with a low around 74°F23°C. Light wind from the E around 6 mph9 km/h. 12% chance of drizzle in the evening.

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