LONGMIRE RAINIER NPS, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(454764) LONGMIRE RAINIER NPS
From Year=1978 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 1021 884 844 694 517 334 182 162 302 588 858 1042 7429
60 866 743 689 545 371 206 86 68 179 437 708 887 5785
57 773 658 596 456 289 142 48 33 121 349 618 794 4878
55 711 602 534 398 237 104 30 19 88 293 558 732 4306
50 556 461 381 260 126 36 6 2 29 168 408 577 3010
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