MAUNA LOA SLOPE OBS 39, HAWAII

Period of Record General Climate Summary - Heating Degree Days

Station:(516198) MAUNA LOA SLOPE OBS
From Year=1955 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	726	672	723	653	614	502	540	539	537	582	618	700	7405
60	571	530	568	503	459	352	385	384	387	427	468	545	5579
57	478	446	475	413	366	262	292	291	297	334	378	452	4483
55	416	389	413	353	304	202	231	229	237	272	318	390	3754
50	262	248	259	206	154	74	89	86	95	122	170	236	2001

Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu