San Jose - Recent September Temperatures and Rainfall





The numbers here describe what the September weather in San Jose, 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 Jose had wet weather.

The climate data come from weather measurements made at San Jose International Airport.

Temperature Weather iconTemperature

September temperature averages by year in San Jose
High °F Low °F Year High °C Low °C
80 55 2018 26 13
85 62 2017 30 16
82 58 2016 28 14
82 58 2015 28 14
78 59 2014 26 15
79 57 2013 26 14
77 54 2012 25 12
83 58 2011 28 15
83 58 2010 28 14
Number of days in September when the temperature in San Jose rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2018 27 1
2017 30 8
2016 30 6
2015 29 6
2014 30 0
2013 30 1
2012 28 1
2011 30 5
2010 30 8

Rainy Weather iconRain

This table gives the total precipitation that fell on San Jose during September in each year from 2010. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.3 millimeters) or more.

Total rainfall for September in San Jose
Days Year Inches Milli­metres
0 2018 0.0 0
1 2017 0.0 1
0 2016 0.0 0
1 2015 0.0 0
1 2014 0.4 9
1 2013 0.7 17
1 2012 0.0 0
0 2011 0.0 0
0 2010 0.0 0
Reference

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

San Jose - Recent Years
San Jose - Extremes
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