Temperatures in January
It's hot in January in San Bernardino with an average temperature of 35°C. Temperatures this month range from a low of 33°C to a high of 36°C. At night, you can expect temperatures between 23°C and 25°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for San Bernardino in January. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of January
The month of January starts in San Bernardino with hot temperatures, averaging around 35°C during the day and nights close to 24°C. Plenty of days with a chance of precipitation. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-January
By mid-January, the average daytime temperature rises to around 36°C, with nights close to 25°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of January
By the end of January, the average daytime temperature in San Bernardino will be around 35°C, with nights close to 24°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
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Precipitation in January
In January, there is an average of 158 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the East.
The average precipitation chance is 29% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in January for San Bernardino. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
San Bernardino in January |
London | ||
|---|---|---|---|
 Average Temperature |
35°C | 8°C | |
 High Temp |
36°C | 9°C | |
| Low Temp |
33°C | 6°C | |
 Total Precipitation |
158 mm | 58 mm | |
| Rainy Days |
9 days | 9 days | |
December
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is January a good time to visit San Bernardino?
After some sun? Then January isn’t the best time to be in San Bernardino. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for San Bernardino in January
With 44°C, San Bernardino hit the highest temperature in the last 10 years in January 2014. The lowest daytime temperature in this month was 25°C in 2019. The extreme night temperatures ranged from a low of 15°C to a high of 29°C.
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Daily Temperature in January in San Bernardino
This chart shows the average daily temperatures, both day and night, for each day in January in San Bernardino, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in January in San Bernardino
The chart below shows the average daily precipitation in January for San Bernardino, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for January, you can expect around 9 days of rain in San Bernardino.
Daily UV Index in January in San Bernardino
This chart shows the average daily UV index in January in San Bernardino, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in San Bernardino Over the Years
This chart shows the average temperature in January in San Bernardino, measured in degrees Celsius, over the past years.
Total Precipitation in January in San Bernardino Over the Years
This chart shows the average precipitation in January in San Bernardino, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in January for San Bernardino
Click on a specific day in January for detailed info on the typical weather on that day in San Bernardino. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in San Bernardino
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Average Weather in San Bernardino by Month
Click on a month below to see detailed weather info for San Bernardino. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of San Bernardino for all months at once
