GRAYLAND, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(453320) GRAYLAND
From Year=1948 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
65 704 594 608 504 400 276 216 195 232 399 559 704 5391
60 549 453 453 356 249 133 76 60 102 248 409 549 3636
57 456 368 361 268 163 61 24 17 46 164 319 456 2702
55 394 312 299 211 111 28 8 6 22 114 259 394 2160
50 242 178 155 84 22 1 0 0 2 31 126 241 1082
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