METHOW 2 S, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(455326) METHOW 2 S
From Year=1970 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 1261 969 753 477 259 98 19 22 149 519 909 1247 6681
60 1106 827 598 331 138 31 3 4 65 369 759 1092 5323
57 1013 743 505 247 82 11 1 1 33 284 669 999 4588
55 951 686 443 196 54 5 0 0 20 230 609 937 4131
50 796 545 292 89 12 0 0 0 4 115 460 782 3095
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