PULLMAN EXP STN, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(456784) PULLMAN EXP STN
From Year=1893 To Year=1954
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 7 13 70 228 429 596 873 843 570 296 59 15 3998
40 S 7 21 91 319 748 1344 2217 3060 3629 3925 3983 3998 3998
45 M 1 2 24 121 283 447 718 688 421 172 17 4 2896
45 S 1 3 26 147 430 877 1595 2283 2704 2876 2893 2896 2896
50 M 0 0 5 54 162 303 563 533 283 83 2 1 1988
50 S 0 0 5 59 221 523 1087 1620 1902 1985 1988 1988 1988
55 M 0 0 0 20 78 176 410 381 166 32 0 0 1263
55 S 0 0 0 20 98 274 684 1065 1230 1263 1263 1263 1263
60 M 0 0 0 5 30 85 264 239 81 9 0 0 713
60 S 0 0 0 5 36 121 385 624 704 713 713 713 713
Corn Growing Degree Days
50 M 1 3 32 122 236 345 551 529 332 150 18 3 2323
50 S 1 4 37 159 395 739 1290 1819 2152 2301 2320 2323 2323
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