WINTHROP 1 WSW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(459376) WINTHROP 1 WSW
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 0 1 35 216 464 648 862 831 557 225 14 0 3853
40 S 0 1 35 252 716 1363 2225 3056 3613 3838 3853 3853 3853
45 M 0 0 7 104 313 498 707 676 408 113 2 0 2827
45 S 0 0 7 111 424 922 1629 2305 2712 2825 2827 2827 2827
50 M 0 0 1 38 178 349 552 521 265 44 0 0 1947
50 S 0 0 1 39 217 566 1118 1639 1904 1947 1947 1947 1947
55 M 0 0 0 9 79 208 398 367 143 12 0 0 1216
55 S 0 0 0 9 88 296 694 1061 1204 1216 1216 1216 1216
60 M 0 0 0 2 24 97 249 221 58 2 0 0 652
60 S 0 0 0 2 26 123 372 593 651 652 652 652 652
Corn Growing Degree Days
50 M 0 2 44 185 327 417 540 528 400 194 10 0 2647
50 S 0 2 45 230 557 974 1514 2042 2442 2637 2646 2647 2647
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