Volume 18, Issue 10 March 21, 2022
In this Issue
Green How You Clean
Editor's Note
Prices Up Again
Weather
Washington, D.C. Area Cooling/Heating Degree Days
Weather
Washington, D.C. Area Cooling/Heating Degree Days

  

 

Aug-21

Sep-21

Oct-21

Nov-21

Dec-21

Jan-22

Normal 

445

255

55

467

669

848

 Actual

492

241

92

513

541

943

Departure from Normal 

6%
Cooler

11%
Warmer

6%
Cooler

10%
Cooler

19%
Warmer

11%
Cooler

Cooling degree day (CDD) data is for the Washington, D.C. area and is calculated by comparing the day’s average temperature to a 65-degree baseline. If the day’s average temperature is below 65, there are no cooling degree days that day. If the day’s average temperature is greater than 65 degrees, then subtract 65 from the average temperature to find the number of cooling degree days.

*Heating degree day (HDD) data is for the Washington, D.C. area and is calculated by comparing the day’s average temperature to a 65 degree baseline. If the day’s average temperature is above 65, there are no heating degree days that day. If the day’s average temperature is less than 65 degrees, then subtract that average temperature from 65 to find the number of heating degree days.