SUNDOWN RANCH, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(358221) SUNDOWN RANCH
From Year=1931 To Year=1955
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 44 56 84 166 309 419 611 629 524 343 150 70 3405
40 S 44 100 184 350 659 1078 1689 2318 2842 3185 3335 3405 3405
45 M 14 19 34 80 179 272 456 474 376 209 72 20 2206
45 S 14 33 67 147 327 598 1055 1529 1905 2114 2186 2206 2206
50 M 3 5 11 33 90 147 303 320 239 111 27 3 1292
50 S 3 8 20 53 143 289 592 912 1151 1263 1289 1292 1292
55 M 1 1 3 10 40 68 165 180 131 50 8 0 655
55 S 1 1 4 14 54 122 287 466 597 647 655 655 655
60 M 0 0 0 2 15 27 73 81 62 19 1 0 280
60 S 0 0 0 3 18 45 117 199 260 279 280 280 280
Corn Growing Degree Days
50 M 15 19 35 83 160 212 347 356 286 157 56 19 1745
50 S 15 33 69 152 312 524 871 1227 1512 1669 1726 1745 1745
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