San Francisco - Recent May Temperatures and Rainfall





The numbers here describe what the May weather in San Francisco, California was like for every year since 2010. A series of tables gives May 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 hot days occurred each May. 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

May temperature averages by year in San Francisco
High °F Low °F Year High °C Low °C
67 53 2020 20 12
61 52 2019 16 11
62 52 2018 17 11
65 51 2017 18 11
65 53 2016 18 12
60 51 2015 16 11
68 53 2014 20 12
65 52 2013 19 11
64 50 2012 18 10
62 50 2011 17 10
62 50 2010 17 10
Number of days in May when the temperature in San Francisco rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2020 8 0
2019 0 0
2018 2 0
2017 5 0
2016 5 0
2015 0 0
2014 8 1
2013 7 0
2012 4 0
2011 3 0
2010 3 0

Rainy Weather iconRain

This table gives the total precipitation that fell on San Francisco during May 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 May in San Francisco
Days Year Inches Milli­metres
8 2020 0.6 15
7 2019 1.9 49
1 2018 0.0 1
2017
2 2016 0.2 4
4 2015 0.1 2
1 2014 0.0 1
2 2013 0.0 1
2 2012 0.0 1
7 2011 1.1 29
5 2010 1.0 24
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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