SKAGWAY 2, ALASKA

Period of Record General Climate Summary - Growing Degree Days

Station:(508528) SKAGWAY 2
From Year=1965 To Year=2010
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 0 3 7 81 293 483 578 524 326 117 8 3 2426
40 S 0 4 11 93 385 868 1447 1971 2298 2415 2423 2426 2426
45 M 0 0 0 23 150 333 423 369 182 32 1 0 1514
45 S 0 0 1 24 174 506 930 1299 1481 1513 1514 1514 1514
50 M 0 0 0 6 53 185 269 216 62 4 0 0 793
50 S 0 0 0 6 59 243 512 727 790 793 793 793 793
55 M 0 0 0 1 12 65 122 79 8 0 0 0 289
55 S 0 0 0 1 13 79 200 280 288 289 289 289 289
60 M 0 0 0 0 2 13 29 14 0 0 0 0 58
60 S 0 0 0 0 2 15 44 58 58 58 58 58 58
Corn Growing Degree Days
50 M 0 1 2 43 138 234 288 249 116 19 0 0 1090
50 S 0 1 3 46 184 418 706 954 1070 1089 1090 1090 1090
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
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