Typical Weather in Boise, ID in May

72° F Avg High

46° F Avg Low

4 Rainy Days

☀️ Temperature Summary

May is one of the warmer months of the year for Boise, with highs averaging around 72°F. Lows overnight are typically around 46°F. Daily high temperatures can range between 68°F and 77°F, and will often rise as the month goes on.

The warm, dry temperatures in May make Boise a great destination to relax and soak up the sun.

High Temps Throughout the Year

☔ Rain Summary

You can expect about a 12% chance of rain for any given day in May. It's one of the rainier months of the year for Boise, with total rainfall for the month around 1 inches.