METHOW 2 S, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(455326) METHOW 2 S
From Year=1970 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 1260 972 753 477 259 98 21 22 154 519 912 1249 6695
60 1105 830 598 330 138 31 4 4 69 368 762 1094 5334
57 1012 746 505 246 82 12 1 1 36 283 672 1001 4598
55 950 689 443 195 54 6 0 0 22 230 612 939 4140
50 795 548 292 89 12 0 0 0 5 115 463 784 3104
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