Current Conditions

Collinsville, Illinois

68°F20°C

Clear

Wind

SW 8 mph12 km/h

Humidity

65%

Cloud Cover

As of Tuesday, October 13, 2026 at 6:01 AM CDT

Today's Outlook

Night

Mostly clear, with a low around 78°F26°C. Breezy from the SSW at 9 mph15 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 83°F29°C	Low 78°F26°C	Precip 0 in0 mm—	Cloud 10%	Wind SSW 9 mph15 km/h	Monday Night: Mostly clear, with a low around 78°F26°C. Breezy from the SSW at 9 mph15 km/h.
Clear	High 89°F32°CFeels 93°F34°C	Low 68°F20°C	Precip 0 in0 mm—	Cloud 7%	Wind SW 8 mph12 km/h	Tuesday: Mostly clear and hot, with a high of 89°F32°C and morning low of 68°F20°C. Breezy from the SW at 7 to 8 mph11 to 12 km/h. Tuesday Night: Mostly clear, with a low around 69°F21°C. Breezy from the SSW at 8 to 10 mph13 to 16 km/h.
Rain	High 80°F27°C	Low 69°F21°C	Precip 0.34 in8.7 mm85%	Cloud 84%	Wind WNW 6 mph10 km/h	Wednesday: Overcast and warm, with a high of 74°F23°C. Light wind from the NW around 5 mph8 km/h. 85% chance of rain in the morning. Heavy, humid air. Wednesday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the WSW at 7 to 9 mph11 to 15 km/h. 28% chance of drizzle in the evening.
Light Rain	High 74°F23°C	Low 65°F18°C	Precip 0.43 in10.9 mm74%	Cloud 84%	Wind SW 8 mph12 km/h	Thursday: Overcast and warm, with a high of 74°F23°C and morning low of 66°F19°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. 74% chance of light rain in the morning. Humid. Thursday Night: Mostly cloudy, with a low around 65°F18°C. Breezy from the NW at 8 to 13 mph13 to 20 km/h. 71% chance of light rain overnight.
Showers	High 62°F17°C	Low 48°F9°CFeels 44°F6°C	Precip 0.05 in1.3 mm49%	Cloud 69%	Wind NW 14 mph23 km/h	Friday: Mostly cloudy and mild, with a high of 55°F13°C and morning low of 51°F10°C. Windy from the NW at 16 to 17 mph25 to 28 km/h. 10% chance of drizzle in the morning. Dry air. Friday Night: Mostly cloudy, with a low around 48°F9°C. Breezy from the NW at 13 to 15 mph21 to 24 km/h. 49% chance of showers overnight.
Clear	High 56°F13°C	Low 39°F4°CFeels 34°F1°C	Precip 0 in0 mm—	Cloud 5%	Wind N 6 mph9 km/h	Saturday: Mostly clear and mild, with a high of 56°F13°C and morning low of 39°F4°C. Light wind from the NNE around 5 mph8 km/h. Dry air. Saturday Night: Mostly clear, with a low around 39°F4°C. Breezy from the N at 7 to 10 mph11 to 16 km/h.
Clear	High 63°F17°C	Low 39°F4°CFeels 34°F1°C	Precip 0 in0.1 mm1%	Cloud 16%	Wind SSE 8 mph12 km/h	Sunday: Mostly clear and mild, with a high of 63°F17°C and morning low of 39°F4°C. Breezy from the SSE at 8 mph12 km/h. Dry air. Sunday Night: Mostly clear, with a low around 39°F4°C. Breezy from the SSE at 8 mph12 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	MondayOct 12	83°F29°C	78°F26°C	0 in0 mm· —	10%	Clear	SSW 9 mph15 km/h
NightMostly clear, with a low around 78°F26°C. Breezy from the SSW at 9 mph15 km/h.
	TuesdayOct 13	89°F32°C Feels 93°F34°C	68°F20°C	0 in0 mm· —	7%	Clear	SW 8 mph12 km/h
DayMostly clear and hot, with a high of 89°F32°C and morning low of 68°F20°C. Breezy from the SW at 7 to 8 mph11 to 12 km/h. NightMostly clear, with a low around 69°F21°C. Breezy from the SSW at 8 to 10 mph13 to 16 km/h.
	WednesdayOct 14	80°F27°C	69°F21°C	0.34 in8.7 mm· 85%	84%	Rain	WNW 6 mph10 km/h
DayOvercast and warm, with a high of 74°F23°C. Light wind from the NW around 5 mph8 km/h. 85% chance of rain in the morning. Heavy, humid air. NightMostly cloudy, with a low around 69°F21°C. Breezy from the WSW at 7 to 9 mph11 to 15 km/h. 28% chance of drizzle in the evening.
	ThursdayOct 15	74°F23°C	65°F18°C	0.43 in10.9 mm· 74%	84%	Light Rain	SW 8 mph12 km/h
DayOvercast and warm, with a high of 74°F23°C and morning low of 66°F19°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. 74% chance of light rain in the morning. Humid. NightMostly cloudy, with a low around 65°F18°C. Breezy from the NW at 8 to 13 mph13 to 20 km/h. 71% chance of light rain overnight.
	FridayOct 16	62°F17°C	48°F9°C Feels 44°F6°C	0.05 in1.3 mm· 49%	69%	Showers	NW 14 mph23 km/h
DayMostly cloudy and mild, with a high of 55°F13°C and morning low of 51°F10°C. Windy from the NW at 16 to 17 mph25 to 28 km/h. 10% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 48°F9°C. Breezy from the NW at 13 to 15 mph21 to 24 km/h. 49% chance of showers overnight.
	SaturdayOct 17	56°F13°C	39°F4°C Feels 34°F1°C	0 in0 mm· —	5%	Clear	N 6 mph9 km/h
DayMostly clear and mild, with a high of 56°F13°C and morning low of 39°F4°C. Light wind from the NNE around 5 mph8 km/h. Dry air. NightMostly clear, with a low around 39°F4°C. Breezy from the N at 7 to 10 mph11 to 16 km/h.
	SundayOct 18	63°F17°C	39°F4°C Feels 34°F1°C	0 in0.1 mm· 1%	16%	Clear	SSE 8 mph12 km/h
DayMostly clear and mild, with a high of 63°F17°C and morning low of 39°F4°C. Breezy from the SSE at 8 mph12 km/h. Dry air. NightMostly clear, with a low around 39°F4°C. Breezy from the SSE at 8 mph12 km/h.
	MondayOct 19	67°F20°C	48°F9°C Feels 44°F7°C	0.01 in0.2 mm· 5%	45%	Partly Cloudy	S 7 mph12 km/h
DayPartly cloudy and mild, with a high of 67°F20°C and morning low of 48°F9°C. Breezy from the S at 7 mph12 km/h. Dry air. NightPartly cloudy, with a low around 48°F9°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h.
	TuesdayOct 20	71°F22°C	52°F11°C	0.03 in0.8 mm· 10%	34%	Drizzle	SSE 7 mph11 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 52°F11°C. Breezy from the SSE at 6 to 7 mph10 to 11 km/h. NightPartly cloudy, with a low around 52°F11°C. Breezy from the SSE at 7 mph11 km/h. 10% chance of drizzle in the evening.
	WednesdayOct 21	72°F22°C	57°F14°C	0.12 in3 mm· 21%	51%	Drizzle	SSE 8 mph12 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 57°F14°C. Breezy from the SSE at 8 mph12 km/h. 18% chance of drizzle in the morning. NightPartly cloudy, with a low around 58°F14°C. Breezy from the SSE at 8 mph12 km/h. 21% chance of drizzle overnight.
	ThursdayOct 22	71°F22°C	61°F16°C	0.24 in6.1 mm· 31%	72%	Light Rain	S 8 mph13 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 61°F16°C. Breezy from the S at 8 mph13 km/h. 31% chance of light rain in the morning. NightMostly cloudy, with a low around 61°F16°C. Breezy from the SSE at 8 to 9 mph13 to 14 km/h. 27% chance of light rain overnight.
	FridayOct 23	70°F21°C	59°F15°C	0.25 in6.3 mm· 32%	71%	Light Rain	S 8 mph13 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 59°F15°C. Breezy from the S at 8 mph13 km/h. 32% chance of light rain in the morning. NightMostly cloudy, with a low around 60°F15°C. Breezy from the SSE at 8 to 9 mph13 to 14 km/h. 24% chance of light rain overnight.
	SaturdayOct 24	68°F20°C	57°F14°C	0.19 in4.7 mm· 28%	68%	Showers	SSW 8 mph12 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 57°F14°C. Breezy from the SSW at 8 mph12 km/h. 28% chance of showers in the morning. NightMostly cloudy, with a low around 57°F14°C. Breezy from the S at 8 mph13 km/h. 25% chance of showers overnight.
	SundayOct 25	64°F18°C	53°F12°C	0.13 in3.4 mm· 17%	64%	Showers	WSW 7 mph12 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 53°F12°C. Breezy from the WSW at 7 to 8 mph12 to 12 km/h. 17% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 54°F12°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h. 15% chance of showers overnight.
	MondayOct 26	61°F16°C	49°F10°C	0.07 in1.9 mm· 13%	62%	Drizzle	W 7 mph11 km/h
DayMostly cloudy and mild, with a high of 61°F16°C and morning low of 49°F10°C. Breezy from the W at 7 to 8 mph11 to 12 km/h. 13% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 50°F10°C. Breezy from the W at 7 mph11 km/h. 12% chance of drizzle overnight.

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

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