GRAYS RIVER HATCHERY, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(453333) GRAYS RIVER HATCHERY
From Year=1962 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 73 96 150 232 396 517 664 671 558 352 152 77 3939
40 S 73 169 319 551 947 1464 2128 2799 3357 3710 3862 3939 3939
45 M 17 29 51 107 244 367 509 516 409 204 55 18 2525
45 S 17 45 97 204 448 815 1324 1840 2249 2452 2507 2525 2525
50 M 1 4 10 36 118 220 354 361 260 84 10 2 1461
50 S 1 6 15 51 169 389 743 1104 1365 1449 1459 1461 1461
55 M 0 0 1 9 45 98 203 209 128 22 1 0 715
55 S 0 0 1 10 55 153 356 564 693 714 715 715 715
60 M 0 0 0 1 13 32 83 85 44 3 0 0 260
60 S 0 0 0 1 15 46 129 214 257 260 260 260 260
Corn Growing Degree Days
50 M 18 45 78 124 211 277 385 393 334 196 56 15 2131
50 S 18 63 140 264 476 752 1137 1530 1864 2060 2116 2131 2131
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