MAUNA LOA SLOPE OBS, 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