WEST LINN, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(359208) WEST LINN
From Year=1938 To Year=1968
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 86 -99 295 323 463 627 832 826 692 486 289 117 -99
40 S 86 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
45 M 23 -99 159 175 308 477 677 671 542 331 150 39 -99
45 S 23 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
50 M 5 -99 57 60 160 327 522 516 392 182 50 4 -99
50 S 5 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
55 M 0 -99 6 16 50 178 367 361 242 56 5 0 -99
55 S 0 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
60 M 0 -99 0 4 3 65 217 209 115 8 0 0 -99
60 S 0 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
Corn Growing Degree Days
50 M 9 -99 172 162 240 368 512 519 398 229 96 18 -99
50 S 9 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
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