Fairmont City Weather Forecast

    • 70
    • 85

    Mostly Cloudy

    • 69
    • 85

    Chance Thunderstorms

    • 73
    • 92

    Chance Thunderstorms

    • 70
    • 88

    Thunderstorms Likely

    • 67
    • 87

    Mostly Sunny

    • 75
    • 90

    Mostly Sunny

    • 76
    • 97

    Mostly Sunny

Today 15 Jun St. Clair

Partly sunny. Near steady temperature in the lower 80s. Northeast Winds around 5 Mph.

Tonight 15 Jun St. Clair

Mostly cloudy. A slight chance of Showers after midnight. Lows around 70. East Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairmont City Temperature Statistics

June Temperature

St. Louis Downtown Airport (6.2 miles)

  • Lowest 10 June, 2025

    55.7 °F

  • Average June

    71.9 °F

  • Highest 11 June, 2025

    88.6 °F

Climate (2020–Present)

St. Louis Downtown Airport (6.2 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.7 °F

  • Average High 2020–2025

    68.3 °F
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