Walnut Creek Weather in December
December in Walnut Creek averages 14°C (57°F) during the day and 4°C (39°F) at night. It is the wettest month of the year, with 102 mm (4 in) of rainfall on average, so waterproof gear is a must.
Rainfall in Walnut Creek in December
Expect frequent showers this month, so make sure to have an umbrella to keep yourself dry. Past climate data indicates that roughly 13 days will see rain, totalling around 102 mm (4 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Walnut Creek in December
December in Walnut Creek sees highs of 14°C (57°F) and lows of 4°C (39°F) overnight. December is part of the winter season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights fall to 4°C (39°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep. December has the coolest temperatures of the year, but still offering mild weather.
Sunshine in Walnut Creek in December
The area experiences a moderate amount of sunshine, with approximately 160 hours of sunlight expected. This means a decent mix of sun and overcast.December in Walnut Creek 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 Walnut Creek's climate page.
Walnut Creek Temperature in December
Min Temperature
4°C (39°F)
Max Temperature
14°C (57°F)
Chance of Rain
42%
Precipitation
102 mm (4 in)
Rainy days
13 days
Humidity
78% *
Sunshine
160 hours *
Percentage Sunshine
54% *
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
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tolerable
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What to Wear in Walnut Creek in December
Pack for changing conditions in Walnut Creek 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. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Walnut Creek 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 Walnut Creek's climate page.
Temperature Rainfall Sunshine Humidity
See the full Walnut Creek climate overview or explore weather in the United States of America.
