STEHEKIN 3 NW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(458059) STEHEKIN 3 NW
From Year=1931 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 1 2 39 225 479 655 863 837 556 228 21 1 3908
40 S 1 3 42 267 746 1401 2264 3101 3658 3885 3906 3908 3908
45 M 0 0 7 107 326 505 708 682 407 112 3 0 2857
45 S 0 0 7 114 441 946 1654 2336 2743 2854 2857 2857 2857
50 M 0 0 1 37 187 356 553 527 263 42 0 0 1966
50 S 0 0 1 38 225 581 1134 1661 1924 1966 1966 1966 1966
55 M 0 0 0 9 84 214 398 373 139 11 0 0 1227
55 S 0 0 0 9 92 306 704 1077 1216 1227 1227 1227 1227
60 M 0 0 0 1 27 101 250 228 57 2 0 0 667
60 S 0 0 0 1 29 130 380 608 666 667 667 667 667
Corn Growing Degree Days
50 M 0 1 25 141 290 394 540 527 341 122 4 0 2385
50 S 0 1 27 168 458 852 1391 1918 2259 2381 2385 2385 2385
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