WALLA WALLA 3 W ENT LA, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(458926) WALLA WALLA 3 W ENT LA
From Year=1931 To Year=1962
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 51 71 199 408 637 798 1064 1000 723 421 125 71 5567
40 S 51 122 321 729 1366 2164 3228 4228 4950 5372 5497 5567 5567
45 M 18 24 89 262 482 648 909 845 573 275 54 26 4206
45 S 18 42 131 393 876 1523 2433 3278 3850 4126 4180 4206 4206
50 M 4 6 28 138 329 498 754 690 424 150 17 7 3045
50 S 4 10 38 177 506 1004 1758 2448 2872 3022 3038 3045 3045
55 M 0 1 6 57 191 348 599 535 280 62 3 1 2083
55 S 0 1 7 64 255 603 1203 1737 2017 2079 2082 2083 2083
60 M 0 0 1 16 91 207 445 380 154 17 0 0 1310
60 S 0 0 1 17 108 315 759 1139 1293 1309 1310 1310 1310
Corn Growing Degree Days
50 M 18 29 114 254 395 494 660 626 461 256 57 28 3393
50 S 18 48 162 416 811 1305 1964 2591 3052 3309 3366 3393 3393
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