St Louis - Temperature Averages by Decade





Summarized here are the temperatures extending over eight decades at St Louis, Missouri. Listed for every decade from the 1940s to the 2010s are averages for maximum and minimum daily temperatures in degrees Fahrenheit and Celsius. That's followed with information on the number of hot and cold days.

Each decade covers a standard 10-year range. For instance the 1990s includes weather measurements from Jan 1, 1990 to Dec 31, 1999. All the temperature data were collected at St. Louis Lambert International Airport.

High Temperature for Each Decade

Average daily maximum temperature at St Louis
High °F Decade High °C
67.8 2010s 19.9
66.5 2000s 19.1
66.1 1990s 19.0
65.6 1980s 18.7
65.1 1970s 18.4
64.8 1960s 18.2
66.2 1950s 19.0
65.6 1940s 18.7

Low Temperature for Each Decade

Average daily minimum temperature at St Louis
Low °F Decade Low °C
49.0 2010s 9.5
48.0 2000s 8.9
48.3 1990s 9.0
47.0 1980s 8.3
44.7 1970s 7.0
44.7 1960s 7.0
46.6 1950s 8.1
46.1 1940s 7.8

Hot Days per Decade

Total days per year on average when the temperature in St Louis reached at least 70 or 90 °F
Decade 70 °F
21 °C
90 °F
32 °C
2010s 190 58
2000s 183 41
1990s 179 42
1980s 180 46
1970s 181 42
1960s 177 35
1950s 182 51
1940s 178 48

Cold Days per Decade

Total days per year on average when the temperature in St Louis dropped to 0 or 32 °F or lower
Decade 0 °F
-18 °C
32 °F
0 °C
2010s 1 86
2000s 0 88
1990s 2 81
1980s 4 93
1970s 5 106
1960s 3 108
1950s 1 99
1940s 3 100
Reference

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Year, Version 1.0. NOAA National Centers for Environmental Information.

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