Daily Degree Days (18°C Base)

Note: Data is updated after midnight each day.

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 2016 / Nov 2017720.6*  197.9* 98.6 more than the average Spring ------918.5* 667 less than the average yearly
Dec 2015 / Nov 2016---0.7* 98.6 less than the average Spring 152.7*  612.9  766.3* 819.2 less than the average yearly
 
Max720.6 197.9 152.7 612.9 918.5
Average720.6 99.3 152.7 612.9 1585.5
Min720.6 0.7 152.7 612.9 766.3
 
 
DateCooling Degree Days
WinterSpringSummerFallYear
Dec 2016 / Nov 20170.0*  0.4* 0.2 more than the average Spring ------0.4* 298.3 less than the average yearly
Dec 2015 / Nov 2016---0.0* 0.2 less than the average Spring 234.7*  63.8  298.5* 0.2 less than the average yearly
 
Max0.0 0.4 234.7 63.8 298.5
Average0.0 0.2 234.7 63.8 298.7
Min0.0 0.0 234.7 63.8 0.4
 
Color Key
< 300 300 - 600 600 - 900 900 - 1200 1200 - 1500 1500 - 1800 1800 - 2100 2100 - 2400 2400 - 2700 2700 - 3000 3000 - 3300 3300 - 36003600>
* 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.