TATOOSH ISLAND WB, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(458332) TATOOSH ISLAND WB
From Year=1931 To Year=1966
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 104 108 135 220 336 412 481 490 442 370 220 144 3461
40 S 104 212 347 566 902 1315 1795 2285 2727 3097 3317 3461 3461
45 M 22 24 31 81 182 262 326 335 292 216 88 39 1898
45 S 22 46 77 158 340 602 928 1263 1555 1771 1859 1898 1898
50 M 2 2 3 13 49 113 171 180 143 76 14 3 769
50 S 2 4 7 20 69 183 354 534 676 752 766 769 769
55 M 0 0 0 2 5 16 38 41 31 9 0 0 141
55 S 0 0 0 2 7 23 61 101 132 141 141 141 141
60 M 0 0 0 0 0 2 3 2 2 0 0 0 9
60 S 0 0 0 0 1 2 5 7 9 9 9 9 9
Corn Growing Degree Days
50 M 6 8 12 34 80 127 174 183 156 100 30 10 921
50 S 6 13 25 60 140 267 441 624 781 880 911 921 921
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