CHESAW 4 NNW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451385) CHESAW 4 NNW
From Year=1959 To Year=1984
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1395 1093 1065 768 527 298 176 188 403 733 1094 1356 9097
60 1240 952 910 618 374 170 77 87 262 578 944 1201 7413
57 1147 867 817 529 285 107 39 46 187 486 854 1108 6473
55 1085 811 755 469 230 74 23 28 144 425 794 1046 5883
50 930 669 600 323 114 20 3 5 62 279 644 891 4541
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