Fairview Heights Weather Forecast

    • 73
    • 89

    Becoming Sunny

    • 71
    • 87

    Rain Showers Likely

    • 59
    • 85

    Rain Showers

    • 53
    • 71

    Mostly Cloudy

    • 56
    • 73

    Mostly Cloudy

    • 60
    • 76

    Slight Chance Thunderstorms

Today 17 May St. Clair

Mostly sunny. Warmer with Highs in the upper 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 17 May St. Clair

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 70s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairview Heights Temperature Statistics

May Temperature

Belleville, Scott AFB/MidAmerica Airport (7.5 miles)

  • Lowest 7 May, 2026

    40.1 °F

  • Average May

    61.9 °F

  • Highest 12 May, 2026

    81.3 °F

Climate (2021–Present)

Belleville, Scott AFB/MidAmerica Airport (7.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    68.1 °F
Get WillyWeather+ to remove ads