COUPEVILLE 1 S, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451783) COUPEVILLE 1 S
From Year=1895 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 71 85 149 261 421 532 655 661 514 327 146 81 3903
40 S 71 156 305 566 987 1519 2174 2834 3348 3676 3821 3903 3903
45 M 17 21 44 120 266 382 500 506 364 179 50 19 2468
45 S 17 37 82 202 468 850 1350 1855 2219 2399 2449 2468 2468
50 M 1 2 6 30 121 232 345 351 216 65 8 1 1378
50 S 1 4 9 39 160 392 737 1088 1303 1368 1376 1378 1378
55 M 0 0 0 3 29 93 191 196 86 11 0 0 610
55 S 0 0 0 4 33 126 317 513 599 609 610 610 610
60 M 0 0 0 0 3 18 60 61 16 1 0 0 159
60 S 0 0 0 0 4 21 82 143 158 159 159 159 159
Corn Growing Degree Days
50 M 8 18 48 112 199 266 359 366 268 133 30 8 1817
50 S 8 27 75 187 386 652 1011 1378 1645 1779 1809 1817 1817
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