Weather in San Bernardino County for December 2024
Until now, December 2024 in San Bernardino County 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 County predicts temperatures to be around 20 °F, close to the historical average.
In general, the average temperature in San Bernardino County 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.
San Bernardino County experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 39.1 mm.
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San Bernardino County in December average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | ||||||
| 2 20° | 3 21° | 4  22° | 5 24° | 6 23° | 7  21° | 8 19° |
| 9 20° | 10 22° | 11 19° | 12 14° | 13 15° | 14 16° | 15 20° |
| 16 21° | 17 21° | 18  20° | 19  20° | 20 19° | 21 22° | 22 20° |
| 23 23° | 24 18° | 25 17° | 26 18° | 27 19° | 28 20° | 29 22° |
| 30 22° | 31 23° |
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Temperatures trend during December in San Bernardino County
December weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 | Sunny | 20° /9° | 0 mm | 6 | |
| Dec. 2 | Sunny | 20° /6° | 0 mm | 5 | |
| Dec. 3 | Sunny | 21° /8° | 0 mm | 5 | |
| Dec. 4 | Overcast | 22° /11° | 0 mm | 6 | |
| Dec. 5 | Sunny | 24° /9° | 0 mm | 7 | |
| Dec. 6 | Sunny | 23° /11° | 0 mm | 6 | |
| Dec. 7 | Partly cloudy | 21° /9° | 0 mm | 6 | |
| Dec. 8 | Sunny | 19° /9° | 0 mm | 6 | |
| Dec. 9 | Sunny | 20° /8° | 0 mm | 6 | |
| Dec. 10 | Sunny | 22° /6° | 0 mm | 6 | |
| Dec. 11 | Overcast | 19° /9° | 0 mm | 5 | |
| Dec. 12 | Sunny | 14° /7° | 0 mm | 5 | |
| Dec. 13 | Sunny | 15° /5° | 0 mm | 5 | |
| Dec. 14 | Partly cloudy | 16° /7° | 0 mm | 4 | |
| Dec. 15 | Partly cloudy | 20° /5° | 0 mm | 6 | |
| Dec. 16 | Sunny | 21° /9° | 0 mm | 6 | |
| Dec. 17 | Overcast | 21° /9° | 0 mm | 6 | |
| Dec. 18 | Cloudy | 20° /10° | 0 mm | 5 | |
| Dec. 19 | Light rain shower | 20° /11° | 3.4 mm | 5 | |
| Dec. 20 | Light rain shower | 19° /10° | 5.5 mm | 5 | |
| Dec. 21 | Sunny | 22° /11° | 0 mm | 0.6 | |
| Dec. 22 | Partly cloudy | 20° /9° | 0 mm | 0.5 | |
| Dec. 23 | Sunny | 23° /12° | 0 mm | 0.7 | |
| Dec. 24 | Patchy rain possible | 18° /9° | 1.6 mm | 0.6 | |
| Dec. 25 | Patchy rain possible | 17° /2° | 0.1 mm | 0.6 | |
| Dec. 26 | Sunny | 18° /4° | 0 mm | 0 | |
| Dec. 27 | Sunny | 19° /6° | 0 mm | 4 | |
| Dec. 28 | Sunny | 20° /5° | 0 mm | 4 | |
| Dec. 29 | Sunny | 22° /6° | 0 mm | 4 | |
| Dec. 30 | Sunny | 22° /6° | 0 mm | 4 | |
| Dec. 31 | Sunny | 23° /5° | 0 mm | 4 | |
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San Bernardino County in December - FAQ
December rainfall patterns in San Bernardino County
UV exposure in San Bernardino County during December
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Where is San Bernardino County?Get accurate weather forecasts for San Bernardino County, located at latitude 34.108 and longitude -117.29. Stay updated with localized weather information tailored for San Bernardino County.