Campbell Weather in December

Campbell in December averages 15°C (59°F) during the day and 5°C (41°F) at night. This is the wettest month of the year, and part of the winter season.

Rainfall in Campbell in December

With this being the rainiest month, having an umbrella is essential to avoid unexpected rain. You can expect rain on around 11 days based on historical patterns, with 73 mm (2.9 in) average for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Campbell in December

If you're visiting Campbell in December, expect highs of 15°C (59°F) and overnight lows around 5°C (41°F). During December, the winter season is in full swing. The difference between afternoon and evening temperatures is usually noticeable. At 5°C (41°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions. December usually brings the most temperate weather conditions of the year.

Sunshine in Campbell in December

The month experiences a moderate amount of sunlight, with 160 hours of sunshine. This provides a nice balance between sunshine and clouds.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Campbell. Our weather planner can help you explore destinations with more pleasant weather conditions.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Campbell's climate page.

Campbell Temperature in December

Min Temperature 5°C (41°F)  

Max Temperature 15°C (59°F)  

Chance of Rain 37%  

Precipitation 73 mm (2.9 in)  

Rainy days 11 days  

Humidity 78% *  

Sunshine 160 hours *  

Percentage Sunshine 54% *  

* Data from: San Francisco, the United States of America (53 KM, 33 Miles).

What to Wear in Campbell in December

Pack for changing conditions in Campbell in December. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Campbell in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Campbell's climate page.

More climate data for Campbell

Temperature Rainfall Sunshine Humidity

See the full Campbell climate overview or explore weather in the United States of America.