Temperature
Pleasant by day, brisk at night.
75°Ftypical May high
Typical range
May climate
May in Boise
United States · North America
Warm days with cooler nights and plenty of sun.
Good overall
Some afternoons can feel hot.
Daytime high
75°F
Lows around 50°F
Rain
A few rainy days
Sun
12.5 h/day
Air feel
Very dry
When to visit
Month-by-month fit
Best
Precipitation
A few rainy days. About 6 wet days this month.
19%wet-day frequency
Precip amountWet-day chanceSnowfall
Sunshine
Plenty of sun this month.
12.7 hMay sunshine
Heat & humidity by month
Very dryMay Heat feel
Easy airWarm airHot airHumid air
Hourly temperature pattern
In May, afternoons feel about 63° and nights feel near 45°.
FreezingVery coldColdCoolComfortableWarmHotNight hours
Clear sky
Partly cloudy skies this month.
52%May Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in May.
7 mphMay Light breeze
More detailIncludes daypart comfort
Typical May day
May late afternoons are around 72°F, easing to about 69°F in early evening.
Avg temp Typical range
Morning60°F
Rain9%
Cloud46%
Humid airLow
Sun intensityModerate
Best windowMidday67°F
Rain10%
Cloud49%
Humid airLow
Sun intensityStrong
Late afternoon72°F
Rain9%
Cloud53%
Humid airLow
Sun intensityStrong
Early evening69°F
Rain10%
Cloud51%
Humid airLow
Sun intensityLow
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 42 | 29 | 1.8 | 10 | 6.8 | 73 |
| Feb | 47 | 32 | 1.3 | 8 | 8.1 | 67 |
| Mar | 58 | 38 | 1.5 | 9 | 9.6 | 58 |
| Apr | 66 | 42 | 1.1 | 7 | 11.2 | 48 |
| May | 75 | 50 | 1.2 | 6 | 12.7 | 45 |
| Jun | 85 | 57 | 0.5 | 3 | 13.7 | 39 |
| Jul | 96 | 65 | 0.1 | 1 | 14.1 | 29 |
| Aug | 94 | 64 | 0.2 | 1 | 13.2 | 30 |
| Sep | 84 | 56 | 0.4 | 2 | 11.5 | 37 |
| Oct | 68 | 45 | 0.9 | 5 | 9.6 | 50 |
| Nov | 52 | 36 | 1.3 | 7 | 7.3 | 64 |
| Dec | 42 | 30 | 2.1 | 10 | 6.3 | 72 |
Similar climates
Similar
Similar travel styleDenverUnited StatesSimilar travel styleMoabUnited StatesSimilar travel styleLake TahoeUnited StatesSimilar travel styleJackson HoleUnited States
Want a side-by-side climate view? Compare Boise with Denver.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology