WATERVILLE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(459012) WATERVILLE
From Year=1931 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1288 1037 878 574 355 175 51 60 215 568 956 1236 7393
60 1133 896 723 426 220 79 12 17 113 417 806 1081 5923
57 1040 811 630 340 151 40 4 6 67 331 716 988 5123
55 978 754 568 284 112 22 1 2 44 276 656 926 4624
50 823 613 415 160 41 3 0 0 12 154 506 771 3497
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 Jul 28, 2006
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