Fallon Weather Forecast

    • 37
    • 63

    Rain Likely

    • 26
    • 51

    Breezy

    • 28
    • 59

    Mostly Sunny

    • 32
    • 60

    Mostly Sunny

    • 33
    • 64

    Mostly Sunny

    • 38
    • 66

    Partly Sunny

    • 37
    • 68

    Mostly Cloudy

Today 19 Oct Prairie

Partly sunny. Highs in the mid 60s. Southwest wind 5 to 10 Mph.

Tonight 19 Oct Prairie

Rain likely this Evening, then partly cloudy after midnight. Lows in the upper 30s. West wind 15 to 20 Mph. Gusts up to 35 Mph after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fallon Temperature Statistics

October Temperature

Glendive, Dawson Community Airport (25.5 miles)

  • Lowest 6 October, 2025

    30 °F

  • Average October

    52.5 °F

  • Highest 2 October, 2025

    84.9 °F

Climate (2020–Present)

Glendive, Dawson Community Airport (25.5 miles)

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  • Average Low 2020–2025

    33.4 °F

  • Average 2020–2025

    44.9 °F

  • Average High 2020–2025

    56.4 °F
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