Typical Weather in Boise, ID in January

38° F Avg High

24° F Avg Low

5 Rainy Days

☀️ Temperature Summary

January is one of the cooler months of the year for Boise, with highs averaging around 38°F. Overnight lows can reach 24°F. Daily high temperatures can range between 37°F and 41°F, and typically fall throughout the month.

You may want to consider a warmer month to visit Boise, unless you're ready to brave the cold. If you want to avoid the freezing temperatures in January, you may consider visiting in February instead, when highs are often closer to 45°.

High Temps Throughout the Year

☔ Rain Summary

You can expect about a 15% chance of rain for any given day in January. It's one of the rainier months of the year for Boise, with total rainfall for the month around 1 inches.