Typical Weather in Boise, ID in December

38° F Avg High

23° F Avg Low

5 Rainy Days

☀️ Temperature Summary

December is one of the cooler months of the year for Boise, with highs averaging around 38°F. You can expect overnight lows near 23°F most days. Daily high temperatures can range between 43°F and 37°F for the month of December. This is the coldest month of the year in Boise.

You may want to consider a warmer month to visit Boise, unless you're ready to brave the cold. If you're looking to travel when it's warmer, you might consider visiting in November instead, when daily highs are typically closer to 49°.

High Temps Throughout the Year

☔ Rain Summary

You can expect about a 16% chance of rain for any given day in December. It's one of the rainier months of the year for Boise, with total rainfall for the month around 1 inches.