Montana weather in August
One place stands in for Montana here — these are Bozeman's numbers, not a statewide average.
Based on 1 weather station, in Bozeman. One station — Bozeman speaks for the mountain valleys of southwest Montana, not for the plains that stretch east of the Rockies.
Bozeman & the Gallatin Valley
Highs near 81°, nights around 50°, and 1.3 in of rain in a typical August.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Bozeman | 81° / 50° | 4 | Warm and settled, unless the smoke finds the valley. |
Each place above has its own page for the full story — what the month feels like, what to pack, and whether the timing is right.