MAUNA LOA SLOPE OBS 39, HAWAII

Period of Record General Climate Summary - Growing Degree Days

Station:(516198) MAUNA LOA SLOPE OBS
From Year=1955 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	86	73	80	108	164	249	235	236	214	194	137	95	1869
40 S	86	158	238	346	510	759	994	1230	1444	1638	1775	1869	1869
45 M	17	16	15	25	50	111	92	90	75	59	32	17	598
45 S	17	33	48	73	122	233	325	415	490	548	581	598	598
50 M	1	1	0	2	6	22	14	13	9	5	2	1	75
50 S	1	2	2	4	10	32	47	59	68	73	74	75	75
55 M	0	0	0	0	0	1	1	0	0	0	0	0	2
55 S	0	0	0	0	0	1	1	2	2	2	2	2	2
60 M	0	0	0	0	0	0	0	0	0	0	0	0	0
60 S	0	0	0	0	0	0	0	0	0	0	0	0	0

Corn Growing Degree Days
50 M	33	29	34	44	67	109	101	99	88	76	50	35	765
50 S	33	62	96	140	208	317	418	516	604	681	731	765	765

M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
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