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Period of Record General Climate Summary - Heating Degree Days

Station:(218618) WALKER AH GWAH CHING
From Year=1907 To Year=2008
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1779 1461 1216 714 342 107 31 60 277 606 1102 1590 9284
60 1624 1319 1061 567 216 40 6 16 162 457 952 1435 7855
57 1531 1235 968 482 153 19 2 6 108 373 862 1342 7079
55 1469 1178 906 427 118 11 1 2 79 319 802 1280 6592
50 1314 1037 753 298 54 2 0 0 30 200 654 1125 5465
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