San Francisco - Recent September Temperatures and Rainfall





The numbers here describe what the September weather in San Francisco, California was like for every year since 2010. A series of tables gives September data by year for temperature and precipitation.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many really hot days occurred each September. Then there's information on how much rain actually landed this month during recent years, as well as how often San Francisco had wet weather.

The climate data come from weather measurements made in downtown San Francisco.

Temperature Weather iconTemperature

September temperature averages by year in San Francisco
High °F Low °F Year High °C Low °C
69 55 2016 21 13
74 58 2015 23 15
70 59 2014 21 15
70 57 2013 21 14
64 52 2012 18 11
70 55 2011 21 13
71 55 2010 22 13
Number of days in September when the temperature in San Francisco rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2016 11 2
2015 14 4
2014 14 0
2013 15 0
2012 2 0
2011 15 0
2010 14 3

Rainy Weather iconRain

This table gives the total precipitation that fell on San Francisco during September in each year from 2010. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.254 millimeters) or more.

Total rainfall for September in San Francisco
Days Year Inches Milli­metres
0 2016 0.0 0
0 2015 0.1 2
1 2014 0.6 14
1 2013 0.4 10
0 2012 0.0 0
0 2011 0.0 0
0 2010 0.0 1
Reference

Jay Lawrimore. 2016. Global Summary of the Month, Version 1.0. NOAA National Centers for Environmental Information. 

San Francisco - Recent Years
San Francisco - Extremes
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