Baltimore - Hottest Decades





Ranked here are the hottest decades on record for Baltimore, Maryland. The lists include decades when Baltimore had the highest average temperatures, the most hot days and the fewest cold days. These extremes are for temperatures observed at Baltimore Washington International Airport and cover eight decades, from the 1940s to the 2010s.

That is when Baltimore 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.

Hottest High Temperatures

Average daily maximum temperature at Baltimore
High °F Decade High °C
Highest 66.4 2010s 19.1
Runner-up 66.2 1990s 19.0

Warmest Low Temperatures

Average daily minimum temperature at Baltimore
Low °F Decade Low °C
Highest 47.8 1940s 8.8
Runner-up 46.9 2010s 8.3

Most Warm Days

Total days per year on average when Baltimore had temperatures of at least 70 °F (21 °C)
Days Decade
Highest 176 2010s
Runner-up 170 2000s, 1990s

Most Hot Days

Total days per year on average when Baltimore had temperatures of at least 90 °F (32 °C)
Days Decade
Highest 37 2010s
Runner-up 34 1990s

Fewest Freezing Days

Total days per year on average when Baltimore had temperatures of 32 °F (0 °C) or lower
Days Decade
Lowest 80 1940s
Runner-up 91 1970s
References

Current Results. 2019. Baltimore MD 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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