Normal weather in San Bernardino in September
The weather in San Bernardino in September has an average temperature of around 32°C during the day. On average, September sees 116 mm of rain in San Bernardino. The wind speed is 3 Beaufort and mainly comes from East.
After August, September in San Bernardino starts with a temperature of 32°C and ends around October at 32°C.
The hurricane season in San Bernardino lasts from early June to late November.
September averages for San Bernardino
 Average temperature | 32°C |
 Highest daytime temperature | 33°C |
| Lowest daytime temperature | 31°C |
 Total rainfall | 116 mm |
| Rainy days | 21 days |
Temperature per day in September in San Bernardino
This graph shows the average daily maximum temperatures in September in San Bernardino, indicated in degrees Celsius.
Rainfall per day in September in San Bernardino
This graph shows the average daily rainfall in September in San Bernardino, indicated in millimeters.
UV index per day in September in San Bernardino
This graph shows the average daily UV index in September in San Bernardino.
Yearly temperature in September in San Bernardino
This graph shows the average yearly temperature in September in San Bernardino, measured in degrees Celsius, over the past years.
Yearly total rainfall in September in San Bernardino
This graph shows the average yearly rainfall in millimeters in September in San Bernardino, over the past years.
Average daily weather in September
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Experiences with the weather in September in San Bernardino
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Average weather in San Bernardino per month
Click on a month below to see in detail how the weather typically is in San Bernardino and what to expect. Based on the historical weather data of San Bernardino, you can view the average temperature, rainfall, wind, and UV index for each day of the month.