St Louis - Coldest Decades





The coldest decades on record are ranked here for St Louis, Missouri. The lists include decades when St Louis had the lowest average temperatures, the fewest hot days and the most cold days. These extremes are for temperatures observed at St. Louis Lambert International Airport and cover eight decades, from the 1940s to the 2010s.

That is when St Louis had weather measurements that are consistent and complete enough to compare decades. Each decade comprises a standard 10-year range. For instance, the 1990s includes measurements from Jan 1, 1990 to Dec 31, 1999. An exception is the 2010s which so far includes data to the end of 2018. Links to the data behind these lists are in the References section on this page.

Coolest High Temperatures

Average daily maximum temperature at St Louis
High °F Decade High °C
Lowest 64.8 1960s 18.2
Runner-up 65.1 1970s 18.4

Coldest Low Temperatures

Average daily minimum temperature at St Louis
Low °F Decade Low °C
Lowest 44.7 1970s, 1960s 7.0
Runner-up 46.1 1940s 7.8

Fewest Warm Days

Total days per year on average when St Louis had temperatures of at least 70 °F (21 °C)
Days Decade
Lowest 177 1960s
Runner-up 178 1940s

Fewest Hot Days

Total days per year on average when St Louis had temperatures of at least 90 °F (32 °C)
Days Decade
Lowest 35 1960s
Runner-up 41 2000s

Most Freezing Days

Total days per year on average when St Louis had temperatures of 32 °F (0 °C) or lower
Days Decade
Highest 108 1960s
Runner-up 106 1970s

Most Cold Days

Total days per year on average when St Louis had temperatures of 0 °F (-18 °C) or lower
Days Decade
Highest 5 1970s
Runner-up 4 1980s
References

Current Results. 2019. St Louis MO Temperature Averages by Decade

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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