Fairmont City Weather Forecast

    • 18
    • 40

    Sunny

    • 28
    • 35

    Chance Snow

    • 21
    • 45

    Mostly Cloudy

    • 9
    • 26

    Mostly Cloudy

    • 15
    • 26

    Partly Sunny

    • 11
    • 27

    Mostly Sunny

    • 20
    • 34

    Mostly Sunny

Today 14 Jan St. Clair

Sunny, breezy and much cooler with Highs in the upper 30s. Temperature falling into the lower 30s late. Northwest Winds 15 to 25 Mph with Gusts up to 40 Mph.

Tonight 14 Jan St. Clair

Clear. Much cooler with Lows around 17. Northwest Winds 10 to 15 Mph. Gusts up to 30 Mph this evening.

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  • Temperature Real-Time

Fairmont City Temperature Statistics

January Temperature

St. Louis Downtown Airport (6.2 miles)

  • Lowest 4 January, 2026

    19 °F

  • Average January

    41.4 °F

  • Highest 6 January, 2026

    68 °F

Climate (2021–Present)

St. Louis Downtown Airport (6.2 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    68.7 °F
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