Gallatin National Forest Weather Forecast
- 39
- 54
Rain Showers
- 37
- 42
Rain Showers
- 36
- 50
Chance Thunderstorms
- 38
- 53
Slight Chance Thunderstorms
- 37
- 54
Partly Sunny
- 38
- 54
Mostly Sunny
Today 18 Sep Absaroka/Beartooth Mountains
Patchy fog early in the morning. Chance of rain Showers in the morning. Isolated Thunderstorms late in the Morning, then rain Showers and scattered Thunderstorms in the afternoon. Highs in the mid 60s. Southwest Winds 5 to 10 Mph. Chance of precipitation 80 percent.
Tonight 18 Sep Absaroka/Beartooth Mountains
Rain Showers and scattered Thunderstorms in the evening. Chance of rain Showers and isolated Thunderstorms overnight. Patchy fog in the late evening and overnight. Some Thunderstorms may produce heavy rainfall early in the evening. Some Thunderstorms may produce heavy rainfall in the late evening and overnight. Lows in the upper 30s. North Winds 5 to 10 Mph in the evening shifting to the southeast overnight. Chance of precipitation 90 percent.
Gallatin National Forest Temperature Statistics
September Temperature
Livingston, Mission Field Airport (37.3 miles)
Lowest 15 September, 2026
33.1 °FAverage September
60.9 °FHighest 10 September, 2026
86.6 °F
Climate (2021–2026)
Livingston, Mission Field Airport (37.3 miles)
Average Low 2021–2026
34.7 °FAverage 2021–2026
47.5 °FAverage High 2021–2026
60.2 °F