What’s the climate like in San Bernardino?
The current climate of San Bernardino features average monthly temperatures ranging from highs of 35°C during the day to lows of 19°C. The average yearly temperature is around 27°C. At night, temperatures in the colder months average around 7°C and in the warmer months around 19°C.
The highest temperature recorded in San Bernardino in recent years was 47°C in September 2020. The lowest daytime temperature recorded was 8°C in February 2023.
On average, San Bernardino receives 390 mm of precipitation each year. For comparison, London gets 701 mm of precipitation annually.
Best time to visit San Bernardino?
The best time to visit San Bernardino for sunny weather is January through December. During this period, you'll have good temperatures and not too much rain, making it a great time to visit San Bernardino.
Climate Table of San Bernardino
The climate table of San Bernardino shows the average temperatures, precipitation, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 20 | 20 | 22 | 25 | 27 | 32 | 35 | 35 | 33 | 29 | 24 | 19 |
| Temp. min (°C) | 7 | 7 | 9 | 12 | 14 | 16 | 19 | 20 | 18 | 15 | 10 | 7 |
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| Precipitation (mm) | 72 | 87 | 57 | 42 | 7,9 | 3,5 | 4,5 | 6,7 | 5,8 | 7,0 | 24 | 72 |
| UV Index | 5 | 6 | 8 | 9 | 9 | 10 | 9 | 9 | 8 | 7 | 6 | 5 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 27°C
- Highest temperature: 35°C in July and August
- Lowest temperature: 19°C in December
- Precipitation: 390 mm per year, averaging 33 mm per month
- Driest months: 3,5 mm in June, 4,5 mm in July and 5,8 mm in September
- Wettest months: 87 mm in February, 72 mm in January and 72 mm in December
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Table of Contents
Average Temperature per Month in San Bernardino
This graph shows the average maximum temperatures per month in San Bernardino, California. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in San Bernardino
This graph shows how much precipitation San Bernardino, California, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average UV Index per Month in San Bernardino
This graph shows the average UV index per month in San Bernardino, California. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in San Bernardino
This graph shows the average yearly temperature in San Bernardino, California. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in San Bernardino
This chart shows the total yearly precipitation in San Bernardino, California, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Weather experiences 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.
