Best Time to Visit Boise
Best time: Jul, Aug, Jun, Sep.
Aug is warmest (32.1°C high); Jan is rainiest (42 mm).
See the best things to do in Boise →
See the best things to do in Boise →
Boise weather by month
| Month | High °C | Low °C | Rain mm | Sun hrs |
|---|---|---|---|---|
| Jan | 3.6 | -5.1 | 42 | 2.5 |
| Feb | 7.4 | -2.7 | 31 | 4.2 |
| Mar | 12.1 | 0 | 36 | 6.4 |
| Apr | 16.8 | 2.7 | 32 | 8.5 |
| May | 21.9 | 6.7 | 31 | 10.4 |
| Jun | 27.1 | 10.6 | 21 | 11.7 |
| Jul | 32 | 13.7 | 9 | 12.3 |
| Aug | 32.1 | 13.8 | 8 | 10.7 |
| Sep | 25.8 | 8.9 | 19 | 8.3 |
| Oct | 19 | 3.7 | 20 | 5.5 |
| Nov | 10 | -0.9 | 40 | 3 |
| Dec | 4.3 | -4.8 | 39 | 2.2 |
Average high temperature
Best months by activity
Overall: JulAugJunSep
Beaches: JulAugJunSep
Hiking: JunSepJulMay
Sightseeing: JulAugJunMay
Boise quick facts
What to pack
Cold months (Jan, Feb, Mar, Nov, Dec): warm layers and a coat.
Frequently asked questions
When is the best time to visit Boise?
Jul, Aug, Jun, Sep.
What is the rainiest month?
Jan, about 42 mm.
What is the warmest month?
Aug, with average highs of 32.1°C.
Where to stay
See Boise hotels · Book Boise tours & activities
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Climate data: Open-Meteo Historical (ERA5), 1991–2020 climate normals.
Licensed under CC BY 4.0.
Open-Meteo.