Hartford - Coldest Decades





The coldest decades on record are ranked here for Hartford, Connecticut. The lists include decades when Hartford had the lowest average temperatures, the fewest hot days and the most cold days. These extremes are for temperatures observed at Bradley International Airport near Hartford and cover seven decades, from the 1950s to the 2010s.

That is when Hartford 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 Hartford
High °F Decade High °C
Lowest 59.8 1960s 15.5
Runner-up 59.9 1950s 15.5

Coldest Low Temperatures

Average daily minimum temperature at Hartford
Low °F Decade Low °C
Lowest 38.8 1960s 3.8
Runner-up 39.4 1980s 4.1

Fewest Warm Days

Total days per year on average when Hartford had temperatures of at least 70 °F (21 °C)
Days Decade
Lowest 134 1950s
Runner-up 141 1980s

Fewest Hot Days

Total days per year on average when Hartford had temperatures of at least 90 °F (32 °C)
Days Decade
Lowest 15 1950s
Runner-up 16 1990s

Most Freezing Days

Total days per year on average when Hartford had temperatures of 32 °F (0 °C) or lower
Days Decade
Highest 138 1960s
Runner-up 135 1980s

Most Cold Days

Total days per year on average when Hartford had temperatures of 0 °F (-18 °C) or lower
Days Decade
Highest 7 1960s
Runner-up 6 1980s
References

Current Results. 2019. Hartford CT 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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