PULLMAN 2 NW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(456789) PULLMAN 2 NW
From Year=1940 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 8 18 65 188 400 563 802 805 561 277 50 8 3746
40 S 8 26 91 278 679 1242 2044 2849 3410 3687 3738 3746 3746
45 M 1 3 20 92 257 414 647 650 413 158 15 1 2670
45 S 1 4 24 116 372 786 1434 2084 2496 2654 2669 2670 2670
50 M 0 0 4 37 142 269 493 495 274 76 3 0 1793
50 S 0 0 5 42 184 452 945 1440 1714 1790 1793 1793 1793
55 M 0 0 0 12 65 146 340 343 158 30 0 0 1095
55 S 0 0 0 12 77 224 564 907 1065 1095 1095 1095 1095
60 M 0 0 0 3 24 65 202 206 75 9 0 0 583
60 S 0 0 0 3 27 92 293 499 574 583 583 583 583
Corn Growing Degree Days
50 M 1 6 33 106 231 331 505 506 351 165 17 1 2252
50 S 1 7 40 145 376 707 1212 1718 2069 2234 2251 2252 2252
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