Normal weather in California in September
The weather in California in September has an average temperature of around 30°C during the day. On average, September sees 384 mm of rain in California. The wind speed is 3 Beaufort and mainly comes from Southwest.
After August, September in California starts with a temperature of 31°C and ends around October at 30°C.
The hurricane season in California lasts from early June to late November.
September averages for California
 Average temperature | 30°C |
 Highest daytime temperature | 31°C |
| Lowest daytime temperature | 30°C |
 Total rainfall | 384 mm |
| Rainy days | 27 days |
Temperature per day in September in California
This graph shows the average daily maximum temperatures in September in California, indicated in degrees Celsius.
Precipitation per day in September in California
This graph shows the average daily precipitation in September in California, indicated in millimeters.
UV index per day in September in California
This graph shows the average daily UV index in September in California.
Yearly temperature in September in California
This graph shows the average yearly temperature in September in California, measured in degrees Celsius, over the past years.
Yearly total precipitation in September in California
This graph shows the average yearly precipitation in millimeters in September in California, over the past years.
Average daily weather in September
Click on a day to get more information about the average weather on that day.
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Average weather in California per month
Click on a month below to see in detail how the weather typically is in California and what to expect. Based on the historical weather data of California, you can view the average temperature, precipitation, wind, and UV index for each day of the month.