Flat River Weather Forecast

    • 74
    • 94

    Isolated Thunderstorms

    • 75
    • 96

    Mostly Sunny

    • 75
    • 96

    Mostly Sunny

    • 74
    • 95

    Slight Chance Thunderstorms

    • 74
    • 95

    Slight Chance Thunderstorms

    • 74
    • 96

    Partly Sunny

    • 74
    • 96

    Hot

Today 22 Jul St. Francois

Mostly sunny with isolated Showers and Thunderstorms. Near steady temperature in the lower 90s. South Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 107.

Tonight 22 Jul St. Francois

Partly cloudy with isolated Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the lower 70s. Southeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 104 early in the evening.

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Flat River Temperature Statistics

July Temperature

Farmington Airport (6.8 miles)

  • Lowest 3 July, 2025

    64 °F

  • Average July

    75 °F

  • Highest 6 July, 2025

    89.1 °F

Climate (2020–Present)

Farmington Airport (6.8 miles)

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  • Average Low 2020–2025

    46.8 °F

  • Average 2020–2025

    56.6 °F

  • Average High 2020–2025

    66.9 °F
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