CLARKSTON HEIGHTS, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451474) CLARKSTON HEIGHTS
From Year=1937 To Year=1959
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 21 43 133 345 584 719 997 932 668 337 75 31 4885
40 S 21 64 198 542 1126 1846 2842 3774 4442 4779 4854 4885 4885
45 M 4 11 49 202 430 569 842 777 518 199 21 5 3627
45 S 4 15 64 266 696 1265 2107 2883 3401 3600 3622 3627 3627
50 M 1 1 12 91 281 419 687 622 370 92 3 0 2579
50 S 1 2 14 105 386 806 1492 2114 2484 2576 2579 2579 2579
55 M 0 0 1 30 154 273 532 467 231 27 0 0 1715
55 S 0 0 1 31 185 458 989 1456 1687 1714 1715 1715 1715
60 M 0 0 0 7 66 145 378 313 116 5 0 0 1028
60 S 0 0 0 7 72 217 594 908 1023 1028 1028 1028 1028
Corn Growing Degree Days
50 M 6 18 81 222 370 445 606 571 424 202 30 9 2984
50 S 6 24 105 327 697 1142 1748 2319 2743 2945 2975 2984 2984
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