BEAVERTON 2 SSW, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(350595) BEAVERTON 2 SSW
From Year=1972 To Year=2007
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 83 121 219 330 507 651 824 824 670 417 179 78 4903
40 S 83 204 423 753 1260 1911 2735 3560 4230 4646 4825 4903 4903
45 M 22 40 95 188 353 501 669 669 520 265 74 20 3416
45 S 22 62 157 345 697 1198 1868 2537 3057 3322 3396 3416 3416
50 M 3 8 27 84 207 351 514 514 370 134 19 3 2235
50 S 3 11 38 122 329 680 1194 1709 2079 2213 2232 2235 2235
55 M 0 1 3 30 102 207 360 359 226 49 3 0 1340
55 S 0 1 4 34 136 343 702 1062 1288 1337 1340 1340 1340
60 M 0 0 0 8 43 97 211 210 109 13 0 0 691
60 S 0 0 0 8 51 148 359 569 679 691 691 691 691
Corn Growing Degree Days
50 M 20 46 108 177 279 371 503 505 401 226 63 15 2714
50 S 20 66 174 351 630 1001 1504 2009 2410 2636 2699 2714 2714
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