EMMONAK, ALASKA

Period of Record General Climate Summary - Heating Degree Days

Station:(502825) EMMONAK
From Year=1977 To Year=1994
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1779 1661 1593 1347 879 443 348 402 628 1077 1406 1665 13228
60 1624 1520 1438 1197 724 298 202 252 478 922 1256 1510 11421
57 1531 1435 1345 1107 631 218 125 168 388 829 1166 1417 10360
55 1469 1378 1283 1047 570 170 82 118 328 767 1106 1355 9673
50 1314 1237 1128 897 421 71 16 32 183 612 956 1200 8067
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