Typical January weather
Boise
Idaho · January
39° days
26° nights
about 5 snowy days · 9½ hours of daylight
What to pack
- Warm coat
- Gloves & beanie
- Snow boots
What January feels like
January is inversion month: a layer of cold murk settles over the Treasure Valley and simply stays, sometimes for a week at a stretch. The drive up to Bogus Basin pops out into sunshine partway, and locals treat that sixteen-mile road as a mental health intervention.
Winter is doing its thing: 5.3 in of snow in a typical January, with fresh snow on about 5 days. Nearly every night dips below freezing.
The numbers
| Typical high | 39° |
|---|---|
| Typical low | 26° |
| Days with snow | 5 |
| Rain and melted snow | 1.4 in |
| Snowfall | 5.3 in |
| Humidity | dry air |
| Sunrise / sunset (mid-month) | 8:14 am / 5:33 pm |