Weather in National City in December
National City, United States averages a high of 17.6°C (63.7°F) and low of 9.1°C (48.4°F) in December, with 5 rain days and 8.6 hours of daily sunshine. Travel score: 77.8/100 (Good). The best time to visit National City is July.
High
18°C64°F
Low
9°C48°F
🌧️
5
rain days
☀️
8.6
hrs/day sunshine
💧
72%
humidity
78— Good
December in National City is mild and mostly dry — good for most activities.
What are the average temperatures in National City?
How much does it rain in National City in December?
National City receives an average of 46.3mm of rainfall across 5 rainy days in December. The annual total is 298.1mm.
What should I pack for National City in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 18°C
Recommended
🧴
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