COUPEVILLE 1 S, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451783) COUPEVILLE 1 S
From Year=1948 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 73 88 151 256 423 532 652 663 520 322 147 79 3907
40 S 73 161 312 568 992 1524 2176 2838 3358 3681 3828 3907 3907
45 M 18 22 44 114 269 382 497 508 370 175 51 18 2468
45 S 18 39 84 198 467 849 1346 1853 2223 2398 2449 2468 2468
50 M 2 2 6 28 123 232 342 353 222 63 8 1 1382
50 S 2 4 10 37 161 393 735 1088 1309 1372 1380 1382 1382
55 M 0 0 0 4 31 94 188 198 90 10 0 0 616
55 S 0 0 1 4 35 129 317 515 605 615 616 616 616
60 M 0 0 0 0 4 19 58 63 17 1 0 0 163
60 S 0 0 0 0 4 23 82 145 162 163 163 163 163
Corn Growing Degree Days
50 M 9 20 50 109 203 268 357 369 276 134 32 8 1836
50 S 9 29 79 188 391 659 1016 1385 1661 1796 1828 1836 1836
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 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