Weather in Boise in May
Boise, United States averages a high of 21.5°C (70.7°F) and low of 8.4°C (47.1°F) in May, with 6 rain days and 12.7 hours of daily sunshine. Travel score: 83.9/100 (Excellent). The best time to visit Boise is August.
High
22°C71°F
Low
8°C47°F
🌧️
6
rain days
☀️
12.7
hrs/day sunshine
💧
50%
humidity
84— Excellent
May in Boise is mild and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Boise?
How much does it rain in Boise in May?
Boise receives an average of 33mm of rainfall across 6 rainy days in May. The annual total is 320.6mm.
What should I pack for Boise in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 22°C
🧴
Sunscreen SPF 30+
13 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Evening jacket or cardigan
Temperature drops 13°C from day to night
Traveling to United States in May?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31