AMCHITKA, ALASKA

Period of Record General Climate Summary - Heating Degree Days

Station:(500252) AMCHITKA
From Year=1949 To Year=1993
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 972 951 1001 906 836 678 604 536 595 718 854 950 9600
60 817 809 846 756 681 528 449 381 445 563 704 795 7773
57 724 724 753 666 588 438 356 288 355 470 614 702 6677
55 662 667 691 606 526 378 294 226 295 408 554 640 5946
50 507 525 536 456 371 228 140 76 145 253 404 485 4124
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