Weather in Riverside in December
Riverside, United States averages a high of 17.5°C (63.5°F) and low of 5.3°C (41.5°F) in December, with 5 rain days and 8.4 hours of daily sunshine. Travel score: 77.6/100 (Good). The best time to visit Riverside is June.
High
18°C64°F
Low
5°C42°F
🌧️
5
rain days
☀️
8.4
hrs/day sunshine
💧
62%
humidity
78— Good
December in Riverside is mild and mostly dry — good for most activities.
What are the average temperatures in Riverside?
How much does it rain in Riverside in December?
Riverside receives an average of 62.1mm of rainfall across 5 rainy days in December. The annual total is 396.9mm.
What should I pack for Riverside in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 18°C
Recommended
🧥
Evening jacket or cardigan
Temperature drops 12°C from day to night
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to United States in December?
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