| NWS Forecast for: Collinsville IL Issued by: National Weather Service Saint Louis, MO Last Update: 2:21 pm CDT Jul 3, 2025 |  |
| This Afternoon: Mostly sunny, with a high near 92. Light south wind. Tonight: Mostly clear, with a low around 72. Light southeast wind. Independence Day: Mostly sunny, with a high near 93. Calm wind becoming south 5 to 8 mph in the morning. Friday Night: Mostly clear, with a low around 72. Southeast wind around 6 mph becoming calm after midnight. Saturday: Sunny, with a high near 95. Calm wind becoming south 5 to 8 mph in the morning. Saturday Night: Partly cloudy, with a low around 75. Sunday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 93. Sunday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Monday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Tuesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Tuesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. | |
| Collinsville IL 38.68°N 90°W (Elev. 499 ft) | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |
