ELMA, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452531) ELMA
From Year=1896 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 78 103 171 287 468 586 733 744 606 384 158 82 4401
40 S 78 180 352 639 1107 1693 2426 3171 3777 4161 4319 4401 4401
45 M 21 29 63 150 315 436 578 589 456 235 62 22 2955
45 S 21 49 113 263 577 1013 1592 2181 2637 2872 2934 2955 2955
50 M 2 4 14 59 174 286 424 435 307 108 13 2 1827
50 S 2 5 19 78 252 539 962 1397 1704 1812 1825 1827 1827
55 M 0 0 1 17 75 148 269 280 167 33 1 0 992
55 S 0 0 2 19 94 241 511 791 958 991 992 992 992
60 M 0 0 0 3 25 56 130 138 63 5 0 0 420
60 S 0 0 0 3 27 83 214 352 414 420 420 420 420
Corn Growing Degree Days
50 M 15 40 87 163 271 336 440 452 366 209 54 15 2446
50 S 15 55 142 305 575 912 1351 1803 2169 2377 2431 2446 2446
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