San Anselmo Weather in December

December in San Anselmo typically sees daytime highs of 13°C (55°F) and nighttime lows of 5°C (41°F). As the wettest month of the year, expect more rainfall than other months. It falls within the winter season.

Rainfall in San Anselmo in December

Expect frequent, heavy rain this month, marking the peak rainfall period. A poncho will help protect you from getting soaked. Typically around 13 days of rainfall are expected, averaging 187 mm (7.4 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in San Anselmo in December

Temperatures in San Anselmo in December top out at 13°C (55°F) and drop to 5°C (41°F) overnight. December is in the winter season. Conditions are often most pleasant around the middle of the day. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. The temperatures in December are often the mildest compared to the rest of the year.

Sunshine in San Anselmo in December

The area enjoys a balanced 160 hours of sunlight, ensuring it's neither too overcast nor too sunny.

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

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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 San Anselmo's climate page.

San Anselmo Temperature in December

Min Temperature 5°C (41°F)  

Max Temperature 13°C (55°F)  

Chance of Rain 43%  

Precipitation 187 mm (7.4 in)  

Rainy days 13 days  

Humidity 78% *  

Sunshine 160 hours *  

Percentage Sunshine 54% *  

* Data from: San Francisco, the United States of America (42 KM, 26 Miles).

What to Wear in San Anselmo in December

Pack for changing conditions in San Anselmo 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. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in San Anselmo in December

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

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

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 San Anselmo's climate page.

More climate data for San Anselmo

Temperature Rainfall Sunshine Humidity

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