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Weather in San Bernardino for December 2024

Your guide to San Bernardino weather in December - trends and predictions

    Temperatures

  • Until now, December 2024 in San Bernardino has been nearly identical to the historical average, with a temperature of 20 °F (showing only a slight deviation of 0.1 °F).

  • The forecast for the next days in San Bernardino predicts temperatures to be around 20 °F, close to the historical average.

  • In general, the average temperature in San Bernardino at the beginning of December is 21.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 20.1 °F by the end of December.

    • Rain 🌧️

  • San Bernardino experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 39.1 mm.

    • More

  • Christmas Day weather in San Bernardino 🎄 - See the complete forecast for Wednesday, December 25.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
25
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/9°
Temperatures
Average wind speed
8 km/h
Avg max wind
Average humidity
41 %
Avg humidity

San Bernardino in December average weather

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
20°
2
Sunny
20°
3
Sunny
21°
4
Overcast
22°
5
Sunny
24°
6
Sunny
23°
7
Partly cloudy
21°
8
Sunny
19°
9
Sunny
20°
10
Sunny
22°
11
Overcast
19°
12
Sunny
14°
13
Sunny
15°
14
Partly cloudy
16°
15
Partly cloudy
20°
16
Sunny
21°
17
Overcast
21°
18
Cloudy
20°
19
Light rain shower
20°
20
Light rain shower
19°
21
Sunny
22°
22
Partly cloudy
20°
23
Sunny
23°
24
Patchy rain possible
18°
25
Patchy rain possible
17°
26
Sunny
18°
27
Sunny
19°
28
Sunny
20°
29
Sunny
22°
30
Sunny
22°
31
Sunny
23°
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Temperatures trend during December in San Bernardino

See the weather trend as well as the moving average line

December weather day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
Dec. 1 Sunny
Sunny
 20° /9° 0 mm 6
Dec. 2 Sunny
Sunny
 20° /6° 0 mm 5
Dec. 3 Sunny
Sunny
 21° /8° 0 mm 5
Dec. 4 Overcast
Overcast
 22° /11° 0 mm 6
Dec. 5 Sunny
Sunny
 24° /9° 0 mm 7
Dec. 6 Sunny
Sunny
 23° /11° 0 mm 6
Dec. 7 Partly cloudy
Partly cloudy
 21° /9° 0 mm 6
Dec. 8 Sunny
Sunny
 19° /9° 0 mm 6
Dec. 9 Sunny
Sunny
 20° /8° 0 mm 6
Dec. 10 Sunny
Sunny
 22° /6° 0 mm 6
Dec. 11 Overcast
Overcast
 19° /9° 0 mm 5
Dec. 12 Sunny
Sunny
 14° /7° 0 mm 5
Dec. 13 Sunny
Sunny
 15° /5° 0 mm 5
Dec. 14 Partly cloudy
Partly cloudy
 16° /7° 0 mm 4
Dec. 15 Partly cloudy
Partly cloudy
 20° /5° 0 mm 6
Dec. 16 Sunny
Sunny
 21° /9° 0 mm 6
Dec. 17 Overcast
Overcast
 21° /9° 0 mm 6
Dec. 18 Cloudy
Cloudy
 20° /10° 0 mm 5
Dec. 19 Light rain shower
Light rain shower
 20° /11° 3.4 mm 5
Dec. 20 Light rain shower
Light rain shower
 19° /10° 5.5 mm 5
Dec. 21 Sunny
Sunny
 22° /11° 0 mm 0.6
Dec. 22 Partly cloudy
Partly cloudy
 20° /9° 0 mm 0.5
Dec. 23 Sunny
Sunny
 23° /12° 0 mm 0.7
Dec. 24 Patchy rain possible
Patchy rain possible
 18° /9° 1.6 mm 0.6
Dec. 25 Patchy rain possible
Patchy rain possible
 17° /2° 0.1 mm 0.6
Dec. 26 Sunny
Sunny
 18° /4° 0 mm 0
Dec. 27 Sunny
Sunny
 19° /6° 0 mm 4
Dec. 28 Sunny
Sunny
 20° /5° 0 mm 4
Dec. 29 Sunny
Sunny
 22° /6° 0 mm 4
Dec. 30 Sunny
Sunny
 22° /6° 0 mm 4
Dec. 31 Sunny
Sunny
 23° /5° 0 mm 4
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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.

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 18° 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?
In December, San Bernardino can expect light to moderate rainfall, totaling 39.1 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
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 💧

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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Location coordinates Where is San Bernardino?

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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