Boise weather in May
May in Boise averages 72°F by day and 48°F at night, with 1.5 inches of precipitation. It is the 5th-warmest and 2nd-wettest month of the year here.
- Average high
- 72°F+10° vs April
- Average low
- 48°F1 nights below freezing
- Precipitation
- 1.5 in4 days with 0.1 in. or more
- Snow
- 0.0 in1 days at 90°F+
Is May a good time to visit Boise?
Yes. May is one of the most comfortable months in Boise by our rule (highs of 62 to 86°F, lows of 42°F or more and under 4.5 inches of precipitation). The most comfortable months overall are May to June and September.
On May 15 the sun rises at 6:20 am and sets at 9:03 pm, giving 14h 43m of daylight. Daylight all year.
What to pack for Boise in May
- T-shirts and a light jacket or sweater
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
May nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Boise | 72°F | 48°F | 1.5 in | |
| Meridian, ID | 8 mi | 72°F | 48°F | 1.5 in |
| Nampa, ID | 18 mi | 74°F | 44°F | 1.4 in |
| Caldwell, ID | 26 mi | 74°F | 44°F | 1.4 in |
| Kennewick, WA | 229 mi | 77°F | 46°F | 0.7 in |
| Pasco, WA | 231 mi | 77°F | 46°F | 0.7 in |
| Missoula, MT | 251 mi | 66°F | 40°F | 1.8 in |
Frequently asked questions
What is the weather like in Boise in May?
In May, Boise averages a high of 72°F and a low of 48°F, with 1.5 inches of precipitation (NOAA 1991-2020 normals).
Is May a good time to visit Boise?
Yes. May is one of Boise's most comfortable months by our rule: highs between 62°F and 86°F, lows of 42°F or more and modest rain.
Does it snow in Boise in May?
Rarely. The May snowfall normal is under half an inch.
Before and after: Boise in April and Boise in June. All twelve months: Boise weather by month.
NOAA NCEI 1991-2020 climate normals, station Boise Air Terminal, ID, 2.3 miles from the city center.