WATERVILLE, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(459012) WATERVILLE
From Year=1893 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 1317 1059 890 582 361 177 50 58 224 571 958 1247 7495
60 1162 918 735 434 226 79 12 16 119 418 808 1092 6020
57 1069 834 642 347 156 40 4 6 72 331 718 999 5218
55 1007 777 580 292 115 23 2 2 48 275 658 937 4717
50 852 636 427 166 43 3 0 0 14 153 508 782 3583
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