Collinsville Weather Forecast
- 76
- 93
Isolated Thunderstorms
- 74
- 90
Thunderstorms
- 72
- 89
Chance Thunderstorms
- 73
- 90
Slight Chance Thunderstorms
- 71
- 89
Chance Thunderstorms
- 71
- 91
Chance Thunderstorms
- 72
- 91
Chance Thunderstorms
Today 5 Jul Madison
Sunny. Near steady temperature in the lower 90s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.
Tonight 5 Jul Madison
Partly cloudy with isolated Showers and Thunderstorms. Lows in the mid 70s. Southwest Winds around 5 Mph. Chance of rain 20 percent.
Collinsville Temperature Statistics
July Temperature
Belleville, Scott AFB/MidAmerica Airport (10.6 miles)
Lowest 2 July, 2025
65.8 °FAverage July
79.9 °FHighest 3 July, 2025
91.6 °F
Climate (2020–Present)
Belleville, Scott AFB/MidAmerica Airport (10.6 miles)
Average Low 2020–2025
47.3 °FAverage 2020–2025
57.1 °FAverage High 2020–2025
67.3 °F