KEYPORT, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(454187) KEYPORT TORPEDO STN
From Year=1915 To Year=1958
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 70 87 175 313 468 596 729 731 571 398 176 108 4422
40 S 70 158 333 646 1113 1710 2439 3170 3741 4138 4314 4422 4422
45 M 17 23 67 172 313 446 574 576 421 246 66 36 2957
45 S 17 40 107 279 592 1038 1612 2188 2609 2855 2921 2957 2957
50 M 2 3 16 65 166 296 419 421 272 115 11 6 1794
50 S 2 5 22 87 253 549 968 1389 1661 1776 1788 1794 1794
55 M 0 0 2 15 60 153 265 267 135 34 1 0 932
55 S 0 0 2 17 77 231 495 762 897 931 932 932 932
60 M 0 0 0 1 15 48 122 121 41 5 0 0 353
60 S 0 0 0 2 16 64 186 307 348 353 353 353 353
Corn Growing Degree Days
50 M 12 24 70 155 248 330 436 435 311 180 48 18 2267
50 S 12 36 105 260 509 839 1275 1710 2021 2201 2249 2267 2267
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