Riverside - Recent September Temperatures and Rainfall





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

The climate data come from weather measurements made at the Riverside Municipal Airport.

Temperature Weather iconTemperature

September temperature averages by year in Riverside
High °F Low °F Year High °C Low °C
92 62 2018 33 17
89 63 2017 32 17
91 62 2016 33 17
94 67 2015 34 20
94 66 2014 34 19
92 64 2013 33 18
96 66 2012 36 19
91 62 2011 33 17
93 60 2010 34 16
Number of days in September when the temperature in Riverside rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2018 30 22
2017 30 15
2016 30 17
2015 30 20
2014 30 20
2013 30 19
2012 30 27
2011 30 20
2010 30 20

Rainy Weather iconRain

This table gives the total precipitation that fell on Riverside 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 Riverside
Days Year Inches Milli­metres
0 2018 0.0 0
1 2017 0.2 6
0 2016 0.0 0
2 2015 1.9 47
2 2014 0.2 6
0 2013 0.0 0
0 2012 0.0 0
1 2011 0.0 1
1 2010 0.0 0
Reference

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

Riverside - Recent Years
Riverside - Extremes
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