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Degree Days Seasonal Summary (18°C Base)

Data last updated 19/06/13 15:50.
Northern Hemisphere Meterological Seasons
Winter: December, January, February
Spring: March, April, May
Summer: June, July, August
Fall: September, October, November

Daily DetailMonthly SummarySeasonal Summary


DateHeating Degree Days
WinterSpringSummerFallYear
Dec 2012 / Nov 20131391.9 61 heating degree days less than the Winter average.563.1 121 heating degree days more than the Spring average.18.5* 6.1 heating degree days more than the Summer average.---1973.5* 430.6 heating degree days less than the yearly average.
Dec 2011 / Nov 20121459.8* 6.9 heating degree days more than the Winter average.289.2* 152.9 heating degree days less than the Spring average.2.6* 9.8 heating degree days less than the Summer average.419.7 77 heating degree days less than the Fall average.2171.3* 232.8 heating degree days less than the yearly average.
Dec 2010 / Nov 20111506.9* 54 heating degree days more than the Winter average.411.3* 30.8 heating degree days less than the Spring average.3.3 9.1 heating degree days less than the Summer average.590.4* 93.7 heating degree days more than the Fall average.2511.9* 107.8 heating degree days more than the yearly average.
Dec 2009 / Nov 2010---504.9* 62.8 heating degree days more than the Spring average.25.1* 12.7 heating degree days more than the Summer average.480.0 16.7 heating degree days less than the Fall average.1010.0* 1394.1 heating degree days less than the yearly average.
 
Max1506.9 563.1 25.1 590.4 2511.9
Avg1452.9 442.1 12.4 496.7 2404.1
Min1391.9 289.2 2.6 419.7 0.0
 
 
DateCooling Degree Days
WinterSpringSummerFallYear
Dec 2012 / Nov 20130.0  83.6 28 cooling degree days more than the Spring average.52.3* 339.5 cooling degree days less than the Summer average.---135.9* 395.7 cooling degree days less than the yearly average.
Dec 2011 / Nov 20120.0*  57.7* 2.1 cooling degree days more than the Spring average.624.9* 233.1 cooling degree days more than the Summer average.119.8 35.6 cooling degree days more than the Fall average.802.4* 270.8 cooling degree days more than the yearly average.
Dec 2010 / Nov 20110.0*  33.5* 22.1 cooling degree days less than the Spring average.457.3 65.5 cooling degree days more than the Summer average.111.2* 27 cooling degree days more than the Fall average.602.0* 70.4 cooling degree days more than the yearly average.
Dec 2009 / Nov 2010---47.7* 7.9 cooling degree days less than the Spring average.432.7* 40.9 cooling degree days more than the Summer average.21.5 62.7 cooling degree days less than the Fall average.501.9* 29.7 cooling degree days less than the yearly average.
 
Max0.0 83.6 624.9 119.8 802.4
Avg0.0 55.6 391.8 84.2 531.6
Min0.0 33.5 52.3 21.5 0.0
 
Color Key
< 150 150 - 300 300 - 450 450 - 600 600 - 750 750 - 900 900 - 1050 1050 - 1200 1200 - 1350 1350 - 1500 1500 - 1650 1650 - 18001800>
* denotes incomplete data for the month/year.

A Degree Day is a unit of measurement equal to a difference of one degree between the mean outdoor temperature and a reference temperature (18°C). Degree Days are used in estimating the energy needs for heating or cooling a building.

Script developed by Murry Conarroe of Wildwood Weather.