SOUTH OLYMPIC TREE F, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457871) SOUTH OLYMPIC TREE FARM
From Year=1945 To Year=1956
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 31 39 81 207 426 511 649 651 537 332 122 57 3641
40 S 31 70 151 357 783 1294 1943 2594 3130 3463 3585 3641 3641
45 M 4 6 21 94 276 361 494 496 387 190 42 12 2382
45 S 4 10 31 125 401 762 1255 1751 2138 2328 2370 2382 2382
50 M 0 0 5 33 145 215 339 341 240 79 8 1 1407
50 S 0 0 5 39 184 399 738 1079 1319 1398 1406 1407 1407
55 M 0 0 1 9 61 96 187 189 119 21 1 0 684
55 S 0 0 1 10 71 167 354 543 662 683 684 684 684
60 M 0 0 0 1 19 30 72 70 43 4 0 0 239
60 S 0 0 0 1 20 50 122 192 235 239 239 239 239
Corn Growing Degree Days
50 M 3 11 42 120 261 291 388 382 312 165 36 8 2020
50 S 3 14 56 176 437 729 1117 1499 1811 1976 2012 2020 2020
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