Fairmount Weather Forecast

    • 46
    • 51

    Rain Showers

    • 42
    • 54

    Decreasing Clouds

    • 38
    • 55

    Partly Sunny

    • 40
    • 56

    Chance Rain Showers

    • 31
    • 51

    Mostly Sunny

    • 41
    • 57

    Mostly Sunny

    • 42
    • 62

    Partly Sunny

Today 12 Oct Carlton/South St. Louis

Sunny. Highs in the lower 60s.

Tonight 12 Oct Carlton/South St. Louis

Cloudy with a chance of Showers. A slight chance of Thunderstorms early this Evening, then a slight chance of drizzle. Patchy fog. Near steady temperature in the mid 40s. East Winds 10 to 15 Mph, becoming north 5 to 10 Mph. Gusts up to 30 Mph. Chance of rain 50 percent.

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Fairmount Temperature Statistics

October Temperature

Richard I. Bong Airport (5.6 miles)

  • Lowest 2 October, 2026

    34.9 °F

  • Average October

    56.6 °F

  • Highest 6 October, 2026

    77 °F

Climate (2021–2026)

Richard I. Bong Airport (5.6 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    42.7 °F

  • Average High 2021–2026

    51 °F
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