PLAIN, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(456534) PLAIN
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 1209 947 856 615 394 207 82 87 255 594 908 1164 7318
60 1054 806 701 465 249 98 25 25 133 439 758 1009 5762
57 961 721 608 377 172 51 9 9 79 349 668 916 4920
55 899 665 546 318 127 30 3 4 52 291 608 854 4397
50 744 523 391 181 47 4 0 1 12 160 458 699 3221
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