OREGON CITY, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(356334) OREGON CITY
From Year=1911 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 105 150 245 369 564 708 891 886 727 469 210 102 5426
40 S 105 255 499 869 1432 2141 3032 3917 4645 5113 5324 5426 5426
45 M 35 57 114 223 409 558 736 731 577 316 96 32 3883
45 S 35 92 205 429 837 1396 2132 2862 3440 3756 3852 3883 3883
50 M 6 13 36 105 258 408 581 576 427 176 27 6 2620
50 S 6 19 55 160 419 827 1408 1983 2411 2587 2614 2620 2620
55 M 0 2 6 38 134 261 426 421 280 73 4 0 1645
55 S 0 2 8 45 180 441 867 1287 1567 1640 1644 1645 1645
60 M 0 0 0 10 57 134 272 267 148 20 0 0 909
60 S 0 0 0 10 67 201 474 740 888 909 909 909 909
Corn Growing Degree Days
50 M 24 55 112 193 313 415 556 554 438 241 70 20 2990
50 S 24 79 190 384 697 1112 1668 2221 2659 2900 2970 2990 2990
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