SHELTON, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457584) SHELTON
From Year=1948 To Year=1999
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 63 91 154 277 482 617 766 768 599 357 150 70 4394
40 S 63 154 308 585 1066 1683 2449 3217 3816 4173 4324 4394 4394
45 M 14 25 51 139 327 467 611 613 449 210 57 17 2980
45 S 14 39 90 229 556 1023 1634 2246 2696 2906 2962 2980 2980
50 M 1 3 8 49 183 317 456 458 300 91 11 2 1879
50 S 1 4 12 62 245 562 1018 1475 1776 1867 1878 1879 1879
55 M 0 0 0 12 78 174 301 303 160 25 1 0 1054
55 S 0 0 1 13 91 264 565 868 1028 1053 1054 1054 1054
60 M 0 0 0 2 26 68 155 155 57 3 0 0 466
60 S 0 0 0 2 28 96 251 406 463 466 466 466 466
Corn Growing Degree Days
50 M 8 26 68 145 266 345 456 461 348 175 41 10 2349
50 S 8 34 103 248 513 858 1314 1775 2123 2298 2339 2349 2349
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