Seattle - Recent May Temperatures and Rainfall





The numbers here describe what the May weather in Seattle, Washington 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 Seattle had wet weather.

The climate data come from weather measurements made at Seattle—Tacoma International Airport.

Temperature Weather iconTemperature

May temperature averages by year in Seattle
High °F Low °F Year High °C Low °C
67 49 2017 19 9
69 51 2016 20 10
68 50 2015 20 10
68 50 2014 20 10
67 50 2013 20 10
64 47 2012 18 8
60 45 2011 15 7
61 46 2010 16 8
Number of days in May when the temperature in Seattle rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2017 15 0
2016 11 0
2015 12 0
2014 9 0
2013 9 0
2012 7 0
2011 1 0
2010 4 0

Rainy Weather iconRain

This table gives the total precipitation that fell on Seattle during May 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 May in Seattle
Days Year Inches Milli­metres
14 2017 2.3 58
2 2016 0.9 24
3 2015 0.6 15
6 2014 3.2 80
7 2013 2.4 60
5 2012 2.1 52
7 2011 3.2 81
10 2010 2.8 72
Reference

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

Seattle - Recent Years
Seattle - Extremes
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