CLEARWATER, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451496) CLEARWATER
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 79 96 141 230 378 478 603 614 522 350 158 83 3732
40 S 79 175 316 546 924 1402 2005 2618 3141 3491 3649 3732 3732
45 M 21 25 43 99 225 328 448 459 372 201 60 22 2301
45 S 21 46 89 187 413 740 1188 1647 2019 2220 2279 2301 2301
50 M 2 3 5 26 96 180 293 304 225 82 11 2 1228
50 S 2 5 11 36 132 312 605 908 1133 1215 1226 1228 1228
55 M 0 0 0 5 27 61 144 153 96 19 1 0 505
55 S 0 0 0 5 32 93 236 390 486 504 505 505 505
60 M 0 0 0 0 6 13 39 41 22 2 0 0 124
60 S 0 0 0 0 6 19 59 100 123 124 124 124 124
Corn Growing Degree Days
50 M 12 33 61 112 194 243 333 346 299 173 47 11 1864
50 S 12 45 106 218 412 655 988 1334 1633 1806 1853 1864 1864
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