Fallon Weather Forecast

    • 23
    • 35

    Chance Snow

    • 8
    • 32

    Snow Likely

    • 3
    • 18

    Chance Snow

    • 14
    • 26

    Mostly Cloudy

    • 23
    • 40

    Mostly Cloudy

    • 17
    • 40

    Chance Freezing Rain

Today 4 Dec Prairie

Partly sunny this Morning, then becoming mostly cloudy. Warmer with Highs in the mid 30s. West wind 10 to 15 Mph.

Tonight 4 Dec Prairie

Mostly cloudy. A chance of snow in the evening. Lows in the lower 20s. West wind around 10 Mph. Chance of snow 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fallon Temperature Statistics

December Temperature

Glendive, Dawson Community Airport (25.5 miles)

  • Lowest 1 December, 2025

    -6 °F

  • Average December

    12.7 °F

  • Highest 1 December, 2025

    27 °F

Climate (2020–Present)

Glendive, Dawson Community Airport (25.5 miles)

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  • Average Low 2020–2025

    33.5 °F

  • Average 2020–2025

    45 °F

  • Average High 2020–2025

    56.5 °F
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