Weather in Petaluma in May
Petaluma, United States averages a high of 21.6°C (70.9°F) and low of 10.5°C (50.9°F) in May, with 3 rain days and 12.7 hours of daily sunshine. Travel score: 86.6/100 (Excellent). The best time to visit Petaluma is August.
High
22°C71°F
Low
11°C51°F
🌧️
3
rain days
☀️
12.7
hrs/day sunshine
💧
70%
humidity
87— Excellent
May in Petaluma is mild and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Petaluma?
How much does it rain in Petaluma in May?
Petaluma receives an average of 23.7mm of rainfall across 3 rainy days in May. The annual total is 685.2mm.
What should I pack for Petaluma 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
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