Current Conditions
Collinsville, Illinois
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
| Day | 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. | |||||||
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About This Forecast
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Coordinates: 38.6703°N, 89.9845°W·Elevation: 171m·Timezone: America/Chicago·Population: 24,754