Normal weather in San Francisco in September
The weather in San Francisco in September has an average temperature of around 33°C during the day. On average, September sees 67 mm of rain in San Francisco. The wind speed is 5 Beaufort and mainly comes from East.
After August, September in San Francisco starts with a temperature of 33°C and ends around October at 33°C.
The hurricane season in San Francisco lasts from early June to late November.
September averages for San Francisco
 Average temperature | 33°C |
 Highest daytime temperature | 34°C |
| Lowest daytime temperature | 33°C |
 Total rainfall | 67 mm |
| Rainy days | 5 days |
Temperature per day in September in San Francisco
This graph shows the average daily maximum temperatures in September in San Francisco, indicated in degrees Celsius.
Rainfall per day in September in San Francisco
This graph shows the average daily rainfall in September in San Francisco, indicated in millimeters.
UV index per day in September in San Francisco
This graph shows the average daily UV index in September in San Francisco.
Yearly temperature in September in San Francisco
This graph shows the average yearly temperature in September in San Francisco, measured in degrees Celsius, over the past years.
Yearly total rainfall in September in San Francisco
This graph shows the average yearly rainfall in millimeters in September in San Francisco, over the past years.
Average daily weather in September
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Experiences with the weather in September in San Francisco
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Average weather in San Francisco per month
Click on a month below to see in detail how the weather typically is in San Francisco and what to expect. Based on the historical weather data of San Francisco, you can view the average temperature, rainfall, wind, and UV index for each day of the month.