Fallon Weather Forecast

    • 46
    • 76

    Partly Sunny

    • 49
    • 87

    Mostly Sunny

    • 60
    • 94

    Mostly Sunny

    • 63
    • 96

    Breezy

    • 58
    • 87

    Chance Rain Showers

    • 58
    • 84

    Chance Rain Showers

Today 23 May Prairie

Sunny. Highs in the upper 70s. Southwest wind around 5 Mph.

Tonight 23 May Prairie

Partly cloudy in the Evening, then clearing. Lows in the mid 40s. South wind around 5 Mph in the Evening, becoming light and variable.

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Fallon Temperature Statistics

May Temperature

Glendive, Dawson Community Airport (25.5 miles)

  • Lowest 6 May, 2026

    21.9 °F

  • Average May

    54.6 °F

  • Highest 13 May, 2026

    86 °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

    45.1 °F

  • Average High 2021–2026

    56.6 °F
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