December

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December

San Bernardino Weather December

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November

January

Temperatures trend during December in San Bernardino

See the weather trend as well as the moving average line

December weather in San Bernardino day by day

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November January

Date	Weather	Temperatures	Rain	UV
Dec. 1	Sunny	20° /9°	0 mm	3
Dec. 2	Sunny	19° /6°	0 mm	3
Dec. 3	Sunny	20° /7°	0 mm	3
Dec. 4	Sunny	20° /10°	0 mm	3
Dec. 5	Sunny	23° /8°	0 mm	2.9
Dec. 6	Sunny	22° /11°	0 mm	2.9
Dec. 7	Sunny	22° /9°	0 mm	2.9
Dec. 8	Sunny	20° /9°	0 mm	2.9
Dec. 9	Sunny	22° /9°	0 mm	2.9
Dec. 10	Sunny	23° /9°	0 mm	2.8
Dec. 11	Overcast	22° /10°	0 mm	2.8
Dec. 12	Sunny	17° /10°	0 mm	2.8
Dec. 13	Sunny	18° /8°	0 mm	2.8
Dec. 14	Partly cloudy	19° /9°	0 mm	2.8
Dec. 15	Sunny	21° /8°	0 mm	2.8
Dec. 16	Sunny	23° /11°	0 mm	2.8
Dec. 17	Overcast	23° /11°	0 mm	2.8
Dec. 18	Sunny	22° /11°	0 mm	2.8
Dec. 19	Light rain shower	20° /13°	2.3 mm	2.8
Dec. 20	Light rain	19° /12°	3.6 mm	2.8
Dec. 21	Patchy light rain with thunder	18° /10°	1.8 mm	2.8
Dec. 22	Light rain	18° /10°	1.3 mm	2.8
Dec. 23	Sunny	17° /9°	0.7 mm	2.8
Dec. 24	Heavy rain	15° /10°	80.3 mm	2
Dec. 25	Light rain	15° /7°	7 mm	2.8
Dec. 26	Heavy rain	13° /7°	27 mm	2.8
Dec. 27	Overcast	13° /6°	0 mm	2.8
Dec. 28	Cloudy	17° /6°	0 mm	2.8
Dec. 29	Overcast	18° /7°	0 mm	2.8
Dec. 30	Light rain	13° /7°	4.1 mm	2.8
Dec. 31	Moderate rain	16° /10°	11.3 mm	2
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Important Notice

Our weather forecast for San Bernardino in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Bernardino forecast closer to your planned date for the most up-to-date weather information.

Change Month

San Bernardino in December - FAQ

What are the expected maximum and minimum temperatures in San Bernardino during December?

Enjoy moderate daytime temperatures of up to 19° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in San Bernardino during December?

Significant rainfall exceeding 139.4 mm is expected in San Bernardino during December, occurring over more than 4 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in San Bernardino during December?

The average wind speed in San Bernardino during December is 8 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in San Bernardino

Explore the daily rainfall trends and prepare for San Bernardinos December weather 💧

Typically, San Bernardino has 4 rainy days in December with a total of 139.4 mm of rainfall.

UV exposure in San Bernardino during December

Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️

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Get accurate weather forecasts for San Bernardino, located at latitude 34.108 and longitude -117.29. Stay updated with localized weather information tailored for San Bernardino.

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Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
		1 20°	2 19°	3 20°	4 20°	5 23°
6 22°	7 22°	8 20°	9 22°	10 23°	11 22°	12 17°
13 18°	14 19°	15 21°	16 23°	17 23°	18 22°	19 20°
20 19°	21 18°	22 18°	23 17°	24 15°	25 15°	26 13°
27 13°	28 17°	29 18°	30 13°	31 16°