Gallatin National Forest Weather Forecast

    • 34
    • 42

    Rain Showers

    • 33
    • 44

    Chance Rain Showers

    • 37
    • 53

    Mostly Sunny

    • 38
    • 56

    Partly Sunny

    • 38
    • 56

    Mostly Sunny

    • 40
    • 58

    Mostly Sunny

Today 19 Sep Absaroka/Beartooth Mountains

Scattered rain Showers in the morning. Isolated Thunderstorms late in the Morning, then numerous rain Showers and scattered Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall in the late morning and afternoon. Highs in the upper 50s. Northwest Winds 5 to 10 Mph. Chance of precipitation 60 percent.

Tonight 19 Sep Absaroka/Beartooth Mountains

Rain Showers likely and slight chance of Thunderstorms early in the Evening, then chance of rain Showers in the late evening and overnight. Patchy fog in the late evening and overnight. Areas of fog after 3 am. Some Thunderstorms may produce heavy rainfall early in the evening. Lows in the lower 30s. Northwest Winds 5 to 10 Mph. Chance of precipitation 60 percent.

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  • Temperature Real-Time

Gallatin National Forest Temperature Statistics

September Temperature

Livingston, Mission Field Airport (37.3 miles)

  • Lowest 15 September, 2026

    31.6 °F
  • Average September

    60.1 °F
  • Highest 10 September, 2026

    86.6 °F

Climate (2021–2026)

Livingston, Mission Field Airport (37.3 miles)

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  • Average Low 2021–2026

    34.7 °F
  • Average 2021–2026

    47.5 °F
  • Average High 2021–2026

    60.2 °F
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