Weather in Boise, Idaho, United States in May
In an average May, Boise sees a daily high around 69°F and a low around 44°F, based on 1981–2026 of local climate records.
| Average high | 69°F |
|---|---|
| Typical high range | 56°F to 83°F |
| Average low | 44°F |
| Typical low range | 35°F to 54°F |
| Average daily precipitation | 0.10 in |
May records
The most extreme May on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total May accumulation.
High
Highest
100°F
2003-05-28
Lowest
42°F
2022-05-09
Low
Highest
66°F
1986-05-31
Lowest
25°F
1999-05-10
Feels-like
Highest
106°F
2003-05-28
Lowest
13°F
1999-05-09
Humidity
Highest
12.1 g/m³
1986-05-31
Lowest
2.8 g/m³
2010-05-04
Wind
Highest
30 mph
2008-05-20
Lowest
3 mph
2019-05-30
Precip
Wettest
5.10 in
1998
Driest
0.12 in
2026
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