WeatherDataDepot Degree Day Site Updated

Steve Heinz - June 9, 2020

For almost 15 years, has been the go-to site for degree day reports and historical data.

What’s a degree day, you may ask? A degree day is what makes it three times more expensive to heat and cool a building in Dallas than in San Diego, even though both cities have the same average annual temperature of 64 degrees. To learn more, you can check out the FAQs.

The all-new and always free WeatherDataDepot site features a year-to-year degree day comparison chart for easy explanation of why utility bills may vary from one year to the next.


You’ll also find convenient cumulative cooling and heating degree day charts (downloadable) for up to a decade of data. Was this heating season average, milder, or more severe? 


And, we’re happy to now offer daily wet bulb temperature! Wet bulb temperature is a great indicator of cooling loads because it embodies the physics of both air temperature and humidity. Wet bulb temperatures explain why a building in Orlando costs a lot more to air condition than a building in Phoenix, even though both cities have the same average annual temperature of 72 degrees.


If your important job responsibilities include analyzing, explaining, or reporting building energy usage, you’ll find WeatherDataDepot to be a great free tool!


Topics: Energy Management- Company News

Steve Heinz

About the Author
Steve Heinz

Steve is the Founder of EnergyCAP, LLC. He is a Professional Engineer, a Certified Measurement & Verification Professional, and Certified Energy Manager with 45 years of experience in energy accounting software and mechanical and architectural engineering. In recognition of his accomplishments, Steve was named the 2013 International Energy Engineer of the Year by the Association of Energy Engineers.

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