WINTHROP 1 WSW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(459376) WINTHROP 1 WSW
From Year=1906 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 0 1 36 218 462 649 876 844 555 230 15 0 3885
40 S 0 1 37 255 717 1366 2242 3085 3641 3870 3885 3885 3885
45 M 0 0 8 106 310 499 721 689 406 115 2 0 2855
45 S 0 0 8 113 423 922 1643 2332 2738 2853 2855 2855 2855
50 M 0 0 1 39 175 350 566 534 263 44 0 0 1972
50 S 0 0 1 39 215 565 1131 1665 1928 1972 1972 1972 1972
55 M 0 0 0 9 76 209 412 380 142 12 0 0 1239
55 S 0 0 0 9 85 294 706 1086 1227 1239 1239 1239 1239
60 M 0 0 0 1 23 97 262 233 57 2 0 0 675
60 S 0 0 0 1 24 121 383 616 673 675 675 675 675
Corn Growing Degree Days
50 M 0 1 44 185 325 416 547 535 395 195 12 0 2658
50 S 0 2 46 231 557 973 1520 2054 2450 2645 2657 2658 2658
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