Weather in Santa Rosa in December
Santa Rosa, United States averages a high of 14.2°C (57.6°F) and low of 4.7°C (40.5°F) in December, with 10 rain days and 6.4 hours of daily sunshine. Travel score: 58.8/100 (Mixed). The best time to visit Santa Rosa is July.
High
14°C58°F
Low
5°C40°F
🌧️
10
rain days
☀️
6.4
hrs/day sunshine
💧
80%
humidity
59— Mixed
December in Santa Rosa is cool and occasionally wet — mixed conditions — plan indoor alternatives.
What are the average temperatures in Santa Rosa?
How much does it rain in Santa Rosa in December?
Santa Rosa receives an average of 152.4mm of rainfall across 10 rainy days in December. The annual total is 736.1mm.
What should I pack for Santa Rosa 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
🧤
Warm gloves
Cold nights around 5°C
🧣
Warm scarf
Protect against cold winds
🎉Visiting United States in December?
Don't miss any public holidays — check before you book!
Compare Santa Rosa
Popular comparisons:
How can I plan my trip to Santa Rosa?
What other cities are near Santa Rosa?
What are other popular cities in United States?
What is the weather like in other months in Santa Rosa?
Data based on 1994–2024 averages · Last updated: 2024-12-31