ROCK CREEK RANCH, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357260) ROCK CREEK RANCH
From Year=1961 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 6 26 33 113 323 557 753 720 415 184 71 14 3217
40 S 6 32 66 179 502 1059 1813 2533 2948 3132 3203 3217 3217
45 M 0 5 7 48 191 408 598 565 275 78 18 2 2197
45 S 0 6 13 61 252 660 1259 1824 2099 2177 2195 2197 2197
50 M 0 1 0 16 88 269 443 411 148 27 1 0 1405
50 S 0 1 1 17 105 374 817 1229 1377 1404 1405 1405 1405
55 M 0 0 0 3 28 149 291 266 60 8 0 0 806
55 S 0 0 0 3 32 180 471 737 798 806 806 806 806
60 M 0 0 0 1 4 62 151 137 16 3 0 0 374
60 S 0 0 0 1 5 67 219 356 372 374 374 374 374
Corn Growing Degree Days
50 M 7 37 72 140 286 375 532 500 376 264 69 6 2664
50 S 7 44 116 256 542 917 1449 1949 2325 2589 2658 2664 2664
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