STEHEKIN 4 NW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(458059) STEHEKIN 3 NW
From Year=1906 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 1 2 39 220 473 650 870 839 555 230 22 2 3903
40 S 1 3 42 262 734 1384 2254 3094 3649 3879 3901 3903 3903
45 M 0 0 7 105 320 500 715 684 406 113 3 0 2854
45 S 0 0 8 112 432 932 1647 2331 2737 2850 2854 2854 2854
50 M 0 0 1 37 181 351 560 529 262 41 0 0 1963
50 S 0 0 1 38 219 570 1130 1659 1922 1962 1963 1963 1963
55 M 0 0 0 9 80 209 406 375 139 10 0 0 1227
55 S 0 0 0 9 88 297 703 1078 1217 1227 1227 1227 1227
60 M 0 0 0 1 26 98 257 229 56 2 0 0 669
60 S 0 0 0 1 27 125 381 611 667 669 669 669 669
Corn Growing Degree Days
50 M 0 1 26 140 288 391 546 529 341 127 5 0 2395
50 S 0 1 28 168 456 847 1393 1922 2263 2390 2395 2395 2395
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