YAKIMA AIR TERMINAL, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(459465) YAKIMA WSO AP
From Year=1946 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 11 29 120 279 541 730 948 903 632 300 58 9 4560
40 S 11 40 160 439 980 1710 2658 3561 4193 4493 4551 4560 4560
45 M 1 6 39 151 387 580 793 748 482 167 16 2 3372
45 S 1 7 47 197 585 1165 1958 2705 3188 3355 3370 3372 3372
50 M 0 1 8 64 245 430 638 593 335 71 3 0 2389
50 S 0 1 9 73 317 748 1386 1979 2314 2385 2388 2389 2389
55 M 0 0 1 21 132 285 484 438 201 22 1 0 1583
55 S 0 0 1 21 153 438 921 1359 1560 1582 1583 1583 1583
60 M 0 0 0 4 57 161 332 287 96 4 0 0 942
60 S 0 0 0 4 62 223 555 842 938 942 942 942 942
Corn Growing Degree Days
50 M 8 24 100 207 354 461 590 566 418 221 40 6 2995
50 S 8 32 132 339 693 1154 1744 2309 2728 2949 2989 2995 2995
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