San Bernardino Weather in December
December in San Bernardino brings very low temperatures, with highs of -2°C (28°F) and nights dropping to -10°C (14°F). Rainfall is on the higher side this month, averaging around 98 mm (3.9 in), so keep a rain jacket handy.
Rainfall in San Bernardino in December
The climate data from previous years indicates about 15 days of snow, averaging 98 mm (3.9 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in San Bernardino in December
In December, expect very low temperatures in San Bernardino, with highs of -2°C (28°F) and lows of -10°C (14°F) at night. December is part of the winter season. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. With lows of -10°C (14°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated. Expect freezing temperatures this month, so ensure you have plenty of warm clothing. It's important to be prepared.
Sunshine in San Bernardino in December
The area experiences limited sunny days, amounting to roughly 72 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for San Bernardino.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our San Bernardino's climate page.
San Bernardino Temperature in December
Min Temperature
-10°C (14°F)
Max Temperature
-2°C (28°F)
Chance of Rain
51%
Precipitation
98 mm (3.9 in)
Rainy days
15 days
Humidity
72% *
Sunshine
72 hours *
Percentage Sunshine
44% *
Best Places in Switzerland in December
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in San Bernardino in December
Winter clothing is essential for visiting San Bernardino in December. If you have a heavy coat, waterproof boots with good traction, and plenty of warm layers it's smart to bring them. Pack cloths like thermal underwear, wool socks, and insulated gloves. Prepare for significant rainfall with proper waterproof clothing and shoes. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in San Bernardino 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 Switzerland, check out our San Bernardino's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Bernardino climate overview or explore weather in Switzerland.
