SHEMYA USAF BASE, ALASKA

Period of Record General Climate Summary - Heating Degree Days

Station:(508419) SHEMYA USAF BASE
From Year=1949 To Year=1995
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1051 965 1022 900 821 679 569 484 514 703 867 1009 9583
60 896 824 867 750 666 529 414 329 364 548 717 854 7757
57 803 739 774 660 573 439 321 236 274 455 627 761 6661
55 741 682 712 600 511 379 259 174 214 393 567 699 5931
50 586 541 557 450 356 229 107 36 70 238 417 544 4132
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