Fallon Weather Forecast

    • 13
    • 29

    Becoming Sunny

    • 29
    • 50

    Partly Sunny

    • 27
    • 42

    Chance Snow

    • 28
    • 46

    Slight Chance Rain

    • 30
    • 52

    Mostly Sunny

    • 14
    • 47

    Mostly Cloudy

Today 22 Feb Prairie

Mostly sunny. Highs around 30. Northeast wind around 5 Mph, becoming east 10 to 15 Mph this afternoon. Wind chill Values around 10 below this morning.

Tonight 22 Feb Prairie

Clear. Lows 10 to 15. East wind 5 to 10 Mph.

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Fallon Temperature Statistics

February Temperature

Glendive, Dawson Community Airport (25.5 miles)

  • Lowest 19 February, 2026

    -4 °F

  • Average February

    32 °F

  • Highest 5 February, 2026

    62.1 °F

Climate (2021–Present)

Glendive, Dawson Community Airport (25.5 miles)

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  • Average Low 2021–2026

    33.7 °F

  • Average 2021–2026

    45.2 °F

  • Average High 2021–2026

    56.7 °F
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