Idaho Weather
Observed at Boise (the largest city by population in Idaho, used as a state-wide proxy). For per-city forecasts, see the city grid below.
Climate at a glance
Idaho covers two distinct climate zones across 236 cities and towns. Predominantly cold semi-arid (55% of cities), with warm-summer Mediterranean pockets (45%).
The state spans roughly 6.7° of latitude (42.0° N to 48.7° N), from Franklin in the south to Moyie Springs in the north. Boise is the largest city by population.
| Zone | Cities | % |
|---|---|---|
| cold semi-arid | 130 | 55.1% |
| warm-summer Mediterranean | 106 | 44.9% |
Microseason · September 21–25 · Mountain West
Thunder retreats as the monsoon dies
Late September brings the final monsoon surge south; by month's end, the daily storm pattern collapses.
Read this microseason across nine climate regions → · See all 72 microseasons
Microseason content for Idaho is drawn from the Mountain West corpus (100% of the state's cities sit in this region).
Live wind & temperature across Idaho
Cities in Idaho
| City | July normal | Population |
|---|---|---|
| Boise | 77°F | 448,305 |
| Nampa | 75°F | 201,956 |
| Coeur d'Alene | 70°F | 131,592 |
| Meridian | 75°F | 130,138 |
| Yellow Pine | 66°F | 17 |
Our dataset lists 236 places in Idaho; the 5 above have a page. For a smaller town, the nearest city above is the closest match.