Weather in Petaluma in December
Petaluma, United States averages a high of 13.9°C (57°F) and low of 5.8°C (42.4°F) in December, with 10 rain days and 6.5 hours of daily sunshine. Travel score: 59.4/100 (Mixed). The best time to visit Petaluma is August.
High
14°C57°F
Low
6°C42°F
🌧️
10
rain days
☀️
6.5
hrs/day sunshine
💧
81%
humidity
59— Mixed
December in Petaluma is cool and occasionally wet — mixed conditions — plan indoor alternatives.
What are the average temperatures in Petaluma?
How much does it rain in Petaluma in December?
Petaluma receives an average of 142.1mm of rainfall across 10 rainy days in December. The annual total is 685.2mm.
What should I pack for Petaluma in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 14°C
🧶
Sweaters and warm layers
Layer up for comfort
Traveling to United States in December?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
🏛️ 121 countries·📅 Updated yearly·✈️ Free forever
Compare Petaluma
Popular comparisons:
How can I plan my trip to Petaluma?
What other cities are near Petaluma?
What are other popular cities in United States?
What is the weather like in other months in Petaluma?
Data based on 1994–2024 averages · Last updated: 2024-12-31