PULLMAN 2 NW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(456789) PULLMAN 2 NW
From Year=1940 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 8 19 64 189 400 564 798 802 557 279 49 8 3737
40 S 8 26 91 280 680 1245 2043 2844 3401 3680 3729 3737 3737
45 M 1 3 20 92 257 415 643 647 409 159 14 1 2661
45 S 1 4 24 116 373 788 1431 2078 2487 2646 2660 2661 2661
50 M 0 0 4 37 141 270 488 492 271 77 2 0 1784
50 S 0 0 5 42 184 453 942 1434 1705 1781 1784 1784 1784
55 M 0 0 0 12 65 147 336 340 156 30 0 0 1087
55 S 0 0 0 12 77 224 560 900 1056 1086 1087 1087 1087
60 M 0 0 0 3 24 65 198 203 74 9 0 0 576
60 S 0 0 0 3 26 92 290 493 567 576 576 576 576
Corn Growing Degree Days
50 M 1 6 33 107 230 332 502 503 347 166 16 1 2243
50 S 1 7 40 146 376 708 1210 1713 2060 2226 2242 2243 2243
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