San Bernardino (CA)
January
Weather in San Bernardino, California for January 2026
Your guide to San Bernardino weather in January - trends and predictions
In general, the average temperature in San Bernardino at the beginning of January is 15.4 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 15.3 °F by the end of January.
San Bernardino experiences moderate rainfall in January, with an average of 7 rainy days and a total precipitation of 71.9 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
24
Dry days
7
Rainy days
0
Snow days
15°/6°
Temperatures
11 km/h
Avg max wind
43 %
Avg humidity
San Bernardino Weather January
Move between months or click on a day
Temperatures trend during January in San Bernardino
See the weather trend as well as the moving average line
January weather in San Bernardino day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 |  Partly cloudy | 17° /8° | 0 mm | 5 | |
| Jan. 2 |  Overcast | 19° /8° | 0 mm | 5 | |
| Jan. 3 |  Moderate rain | 14° /9° | 4.4 mm | 3 | |
| Jan. 4 | Partly cloudy | 14° /3° | 0 mm | 5 | |
| Jan. 5 | Partly cloudy | 15° /4° | 0 mm | 5 | |
| Jan. 6 |  Sunny | 17° /6° | 0 mm | 5 | |
| Jan. 7 |  Patchy rain possible | 12° /4° | 1 mm | 3 | |
| Jan. 8 | Partly cloudy | 12° /3° | 0 mm | 4 | |
| Jan. 9 | Sunny | 16° /5° | 0 mm | 5 | |
| Jan. 10 | Sunny | 14° /3° | 0 mm | 5 | |
| Jan. 11 | Patchy rain possible | 14° /6° | 0.2 mm | 4 | |
| Jan. 12 | Sunny | 14° /3° | 0 mm | 5 | |
| Jan. 13 | Sunny | 14° /3° | 0 mm | 4 | |
| Jan. 14 | Sunny | 14° /2° | 0 mm | 5 | |
| Jan. 15 | Overcast | 16° /5° | 0 mm | 4 | |
| Jan. 16 | Sunny | 18° /6° | 0 mm | 5 | |
| Jan. 17 | Partly cloudy | 12° /5° | 0 mm | 4 | |
| Jan. 18 | Sunny | 16° /4° | 0 mm | 5 | |
| Jan. 19 | Overcast | 17° /7° | 0 mm | 5 | |
| Jan. 20 |  Light drizzle | 14° /6° | 2.7 mm | 4 | |
| Jan. 21 | Light rain shower | 12° /3° | 5.1 mm | 3 | |
| Jan. 22 | Moderate rain | 15° /6° | 10.9 mm | 4 | |
| Jan. 23 | Patchy rain possible | 16° /7° | 0 mm | 5 | |
| Jan. 24 | Overcast | 16° /5° | 0 mm | 5 | |
| Jan. 25 | Patchy rain possible | 14° /6° | 0 mm | 3 | |
| Jan. 26 | Sunny | 13° /6° | 26.9 mm | 4 | |
| Jan. 27 | Sunny | 14° /6° | 20.6 mm | 4 | |
| Jan. 28 | Overcast | 15° /6° | 0 mm | 4 | |
| Jan. 29 | Partly cloudy | 16° /6° | 0 mm | 5 | |
| Jan. 30 | Overcast | 18° /6° | 0 mm | 4 | |
| Jan. 31 | Partly cloudy | 17° /7° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for San Bernardino in January 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 January - FAQ
What are the expected maximum and minimum temperatures in San Bernardino during January?
During January, expect a variety of temperatures with highs around 15° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in San Bernardino during January?
Moderate rainfall is anticipated in San Bernardino during January, with a total of 71.9 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in San Bernardino during January?
The average wind speed in San Bernardino during January is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in San Bernardino
Explore the daily rainfall trends and prepare for San Bernardinos January weather 💧
Quick links
More San Bernardino weather pages
You are here
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.
Found a mistake?
We appreciate your attention to details. Tell us here.