Pleasanton Weather in December

December in Pleasanton brings moderate temperatures, with daytime highs of 14°C (57°F) and nights around 4°C (39°F). It's also the wettest month of the year, so an umbrella is a must.

Rainfall in Pleasanton in December

With the most rainfall occurring this month, it's practical to keep an umbrella handy for sudden downpours. Analyzing past climate data, one can expect approximately 12 days of rain, averaging 91 mm (3.6 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Pleasanton in December

Daytime temperatures in Pleasanton reach 14°C (57°F) in December, dropping to 4°C (39°F) at night. December is in the winter season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows around 4°C (39°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep. December is characterized by some of the mildest temperatures of the year.

Sunshine in Pleasanton in December

With about 160 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

December in Pleasanton 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.

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

Pleasanton Temperature in December

Min Temperature 4°C (39°F)  

Max Temperature 14°C (57°F)  

Chance of Rain 39%  

Precipitation 91 mm (3.6 in)  

Rainy days 12 days  

Humidity 78% *  

Sunshine 160 hours *  

Percentage Sunshine 54% *  

* Data from: San Francisco, the United States of America (45 KM, 28 Miles).

What to Wear in Pleasanton in December

The weather can be unpredictable in December, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Pleasanton 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 Pleasanton's climate page.

More climate data for Pleasanton

Temperature Rainfall Sunshine Humidity

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