Boise Weather Year-Round — Best Time to Visit
Boise, United States has mild weather year-round. The best time to visit is August (score: 98/100). Annual average high: 17.5°C, total rainfall: 321mm.
When is the best time to visit Boise?
98
August is the best month to visit Boise with a travel score of 98/100 (Excellent).
Expect highs of 32.2°C, 1 rain days, and 13.1 hours of daily sunshine.
View August weather details →Travel Score by Month
48
Jan
58
Feb
67
Mar
76
Apr
84
May
95
Jun
97
Jul
98
Aug
96
Sep
82
Oct
61
Nov
46
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Boise each month?
17.5°C
Avg High
5.9°C
Avg Low
321mm
Annual Rain
How much rain does Boise get?
Boise receives 321mm of rain annually. The wettest month is typically December with 53mm, while July is the driest.
What is the weather like each month in Boise?
January
48
4°C
Low: -4°C
9 rain days
Mixed
February
58
7°C
Low: -3°C
8 rain days
Mixed
March
67
12°C
Low: 1°C
9 rain days
Good
April
76
16°C
Low: 4°C
7 rain days
Good
May
84
22°C
Low: 8°C
6 rain days
Excellent
June
95
27°C
Low: 13°C
3 rain days
Excellent
July
97
34°C
Low: 18°C
1 rain days
Excellent
August
Best time to visit98
32°C
Low: 18°C
1 rain days
Excellent
September
96
27°C
Low: 13°C
2 rain days
Excellent
October
82
18°C
Low: 6°C
4 rain days
Excellent
November
61
10°C
Low: 0°C
8 rain days
Good
December
46
4°C
Low: -4°C
10 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31