YAKIMA WSO AP, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(459465) YAKIMA WSO AP
From Year=1946 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 11 30 122 283 542 732 941 899 628 301 58 9 4557
40 S 11 40 162 446 988 1720 2661 3559 4188 4489 4547 4557 4557
45 M 1 6 40 154 389 582 786 744 478 168 16 2 3365
45 S 1 8 48 201 590 1172 1958 2701 3180 3348 3364 3365 3365
50 M 0 1 8 66 246 432 631 589 331 73 3 0 2379
50 S 0 1 9 74 320 752 1383 1972 2303 2376 2379 2379 2379
55 M 0 0 1 21 132 287 476 434 197 23 1 0 1571
55 S 0 0 1 22 154 441 917 1351 1548 1571 1571 1571 1571
60 M 0 0 0 5 57 163 325 283 94 5 0 0 931
60 S 0 0 0 5 61 224 550 833 927 931 931 931 931
Corn Growing Degree Days
50 M 7 25 101 210 354 461 586 564 416 223 40 6 2992
50 S 7 32 134 343 697 1158 1744 2308 2724 2946 2986 2992 2992
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