The best time to visit Boise
Month-by-month climate averages for Boise, ID, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Boise is usually April, May and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest December rain is behind you.
Boise is warmest in July (highs near 92°F) and coldest in December (lows around 24°F), with roughly 15 inches of precipitation across the year and December the wettest month. The sweet spot for most visitors is April, May and October. Expect overnight frost in January, February, November and December.
These are long-run averages. For the actual days you are travelling, check the live Boise forecast - and note how much the models agree, because that tells you how much to trust it.
Boise weather by month
what to expect in Boise through the year, 1991-2020 averagesHere is Boise's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Boise by season.