WALLA WALLA 13 ESE, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(358985) WALLA WALLA 13 ESE
From Year=1948 To Year=1990
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 6 17 59 198 400 581 779 748 513 237 38 8 3584
40 S 6 23 82 280 680 1261 2040 2788 3301 3538 3576 3584 3584
45 M 0 3 15 94 254 431 624 593 365 116 7 1 2503
45 S 0 3 18 112 366 796 1420 2013 2379 2495 2502 2503 2503
50 M 0 0 2 34 133 284 469 438 227 41 0 0 1629
50 S 0 0 2 36 168 453 922 1360 1587 1628 1629 1629 1629
55 M 0 0 0 8 53 155 316 285 111 9 0 0 937
55 S 0 0 0 8 61 216 532 817 928 937 937 937 937
60 M 0 0 0 1 14 65 174 147 38 0 0 0 439
60 S 0 0 0 1 15 80 254 401 439 439 439 439 439
Corn Growing Degree Days
50 M 1 8 42 141 266 369 501 484 342 148 10 1 2314
50 S 1 9 51 192 458 826 1328 1812 2154 2302 2312 2314 2314
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