San Bernardino weather in December (California, United States of America)
Curious about the December weather in San Bernardino? Check out this comprehensive weather guide.
In December, San Bernardino generally has pleasant temperatures and moderate rainfall. December falls within the winter season. Throughout the daytime, temperatures often hover around 19°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 6°C. On average, it is the month with the lowest temperatures of the year. However the temperature is still pleasant and it won't ever get really cold.
San Bernardino in December usually receives moderate rainfall, averaging around 86 mm for the month. With this being the wettest month, keeping an umbrella on hand might save you from getting wet from a sudden shower. Delving into the climate records from the past 30 years, one can predict that nearly 7 days of the month will see rainfall.
The days are predominantly sunny, with an estimated total of around 205 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.
If you prefer dry days with pleasant temperatures, January, February, March, April, May, June, October and November typically offer the best circumstances. While July and August tend to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized San Bernardino climate page with graphs.
San Bernardino, monthly averages in December
Min Temperature
6°C
Max Temperature
19°C
Chance of Rain
23%
Precipitation
86 mm
Rainy days
7 days
Sunshine
205 hours *
Percentage Sunshine
*
Where to go in the United States of America in December
Find out more about the weather in the United States of America in December and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in San Bernardino in December?
For visitors traveling to San Bernardino, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in December.
Interested in more climate information?
This site provides you with all the information you need about the climate in San Bernardino.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.
