Idaho weather in October
One place stands in for Idaho here — these are Boise's numbers, not a statewide average.
Based on 1 weather station, in Boise. One station — Boise sits in the state’s warm southwestern valley, so the mountain towns and the panhandle run colder and snowier than these rows.
Boise & the Treasure Valley
Highs near 65°, nights around 42°, and 0.8 in of rain in a typical October.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Boise | 65° / 42° | 2 | Cottonwood yellow along the Greenbelt, and the air turns crisp. |
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.