Degree Day Data
A degree day is defined as the number of degrees that the mean outdoor temperature for any given day is over or below 65° F. For example, if the average outdoor temperature for the day is 40° F then the math looks like this: 65° F - 40° F = 25 heating degree days (HDD) because it is likely that your heating system was on. If the average outdoor temperature for the day is 85°F then the math looks like this: 85° F - 65° F = 20 cooling degree days (CDD) because it is likely that your cooling system was on. Degree day data is a useful tool in many applications. Historical degree day data is used by heating and air conditioning professionals to assist with HVAC equipment sizing. Degree day data is also useful in analyzing energy use by determining the relation of energy consumption to outdoor temperatures.
The following degree day data is based on New Bern meteorological readings.
Reports are updated monthly and an archive of previous reports is maintained for up to 13 months.
You may also generate your own report.
July 2011 Monthly Totals
July 2011 required:
• 10% more air conditioning than July 2010
• 22% more air conditioning than the historical average for July
• 22% more air conditioning than June 2011
Highest Temperature (July 29) |
102°F |
Total Precipitation |
3.04 in |
Lowest Temperature (July 16) |
63°F |
Normal Precipitation |
6.48 in |
Average Temperature (Normal) |
79.5°F |
|
|
Departure from Norm |
+3.5°F |
Precipitation Departure |
-3.44 in |
Actual Heating Degree Days |
0 |
Actual Cooling Degree Days |
545 |
Normal Heating Degree Days |
0 |
Normal Cooling Degree Days |
446 |
|
June 2011 Monthly Totals
Highest Temperature (June 2) |
98°F |
Total Precipitation |
2.66 in |
Lowest Temperature (June 4) |
54°F |
Normal Precipitation |
4.8 in |
Average Temperature (Normal) |
75.5°F |
|
|
Departure from Norm |
+4°F |
Precipitation Departure |
-2.14 in |
Actual Heating Degree Days |
0 |
Actual Cooling Degree Days |
446 |
Normal Heating Degree Days |
0 |
Normal Cooling Degree Days |
327 |
July-2010 Monthly Totals |
Highest Temperature (July 7) |
98° |
Total Precip |
2.97 |
Lowest Temperature (June 4) |
59° |
Total Snowfall |
0 |
Average Temperature |
79.5° |
Normal Precip |
6.48 |
Departure from Norm |
1° |
Precip Departure |
-3.51 |
Heating Degree Days |
0 |
Nrml Heating Degree Days |
0 |
Cooling Degree Days |
487 |
Nrml Cooling Degree Days |
446 |
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
