Weather in Boulder in May
Boulder, United States averages a high of 19.2°C (66.6°F) and low of 5.1°C (41.2°F) in May, with 13 rain days and 12.4 hours of daily sunshine. Travel score: 71.7/100 (Good). The best time to visit Boulder is August.
High
19°C67°F
Low
5°C41°F
🌧️
13
rain days
☀️
12.4
hrs/day sunshine
💧
62%
humidity
72— Good
May in Boulder is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Boulder?
How much does it rain in Boulder in May?
Boulder receives an average of 96.5mm of rainfall across 13 rainy days in May. The annual total is 586.4mm.
What should I pack for Boulder in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 19°C
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