National City Weather in December
December in National City brings pleasant temperatures around 19°C (66°F) during the day, dropping to 9°C (48°F) at night, with the most rainfall of the year.
Rainfall in National City in December
This month sees the most rain, so carrying an umbrella will ensure you stay dry. Past climate data indicates that roughly 7 days will see rain, totalling around 62 mm (2.4 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in National City in December
Expect highs of 19°C (66°F) in National City in December, with nights dropping to around 9°C (48°F). Conditions are often most pleasant around the middle of the day. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep. This period usually represents the year's more moderate temperatures, but it's far from being chilly.
Sunshine in National City in December
The city usually sees around 231 hours of sunlight, indicating many sunny days — a great month for sightseeing.December in National City has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our National City's climate page.
National City Temperature in December
Min Temperature
9°C (48°F)
Max Temperature
19°C (66°F)
Chance of Rain
23%
Precipitation
62 mm (2.4 in)
Rainy days
7 days
Humidity
64% *
Sunshine
231 hours *
Percentage Sunshine
74% *
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in National City in December
For National City in December, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in National City in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our National City's climate page.
Temperature Rainfall Sunshine Humidity
See the full National City climate overview or explore weather in the United States of America.
