St. Louis - Recent May Temperatures and Rainfall





The numbers here describe what the May weather in St. Louis, Missouri 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 St. Louis had wet weather.

The climate data come from weather measurements made at St. Louis Lambert International Airport.

Temperature Weather iconTemperature

May temperature averages by year in St. Louis
High °F Low °F Year High °C Low °C
85 66 2018 30 19
79 59 2017 26 15
76 57 2016 24 14
78 61 2015 26 16
79 60 2014 26 15
76 58 2013 25 14
84 63 2012 29 17
76 57 2011 24 14
77 59 2010 25 15
Number of days in May when the temperature in St. Louis rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2018 31 8
2017 27 3
2016 23 1
2015 27 0
2014 24 0
2013 23 3
2012 30 10
2011 20 3
2010 23 3

Rainy Weather iconRain

This table gives the total precipitation that fell on St. Louis 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 St. Louis
Days Year Inches Milli­metres
12 2018 5.1 128
10 2017 6.0 152
12 2016 4.7 119
14 2015 3.6 92
11 2014 4.0 101
14 2013 7.1 181
6 2012 1.7 43
17 2011 4.2 106
15 2010 4.7 118
Reference

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

St. Louis - Recent Years
St. Louis - Extremes
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