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July 4th Climate Extremes In The Tennessee Valley

July 4th is forecast to be abnormally cool in 2021, but it has been cooler, and it's also been extremely hot.

HUNTSVILLE, Ala. — The forecast for July 4, 2021 couldn't possibly be better in the Tennessee Valley. We'll be talking about a lack of humidity and temperatures that will only manage to climb into the mid-80s. Some may see the upper 80s, but the mid-80s. will be the normal across the Tennessee Valley. 

This is certainly one of the cooler Fourth of July Weekends we've ever seen especially when we account for Saturday. Saturday will feature temperatures in the low 80s. Keep in mind it's early July. The average high temperature is right around 91-degrees. 

It is worth stressing that this cooler weather for the holiday weekend isn't exactly normal or common. 

Credit: WZDX Weather

Of the last 20 years only 9 of them saw a high temperature below 90-degrees. Since 2000 the coolest Fourth Of July occurred in 2013. The high temperature that year was just 74-degrees. Ironically enough, the hottest Fourth Of July in the last 20 years was 2012. The high temperature was a balmy 102-degrees.

Credit: WZDX Weather

Historically, 2012 is the hottest Fourth of July ever recorded. The coolest Fourth Of July ever recorded was in 1961. The high temperature that year was 57-degrees. 

It's also worth noting the average high temperature on July 4th has gone up 3-degrees. This is a common theme across the country. Climate Central analyzed July temperature data since 1970 for 246 locations across the country. The results show a clear warming trend:

  • About 91% (224) of the locations have reported an increase in their average July temperatures, with 51% (116) of those locations warming by 2°F.
  • The greatest increases in July temperatures are concentrated in the western United States.