CHEWELAH, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(451395) CHEWELAH
From Year=1925 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 1251 982 813 542 325 152 52 64 242 584 909 1169 7085
60 1096 841 658 394 192 62 13 17 128 430 759 1014 5603
57 1003 756 565 308 126 30 4 6 79 340 669 921 4807
55 941 700 504 253 90 16 1 3 53 283 609 859 4312
50 786 559 350 133 29 2 0 0 16 155 460 704 3193
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