WHITEHORSE RANCH, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(359290) WHITEHORSE RANCH
From Year=1965 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 18 34 95 192 419 629 901 858 588 304 70 19 4128
40 S 18 52 147 339 758 1387 2288 3147 3735 4039 4109 4128 4128
45 M 4 8 34 99 277 480 746 703 440 181 22 5 2999
45 S 4 12 45 144 421 901 1647 2351 2791 2972 2994 2999 2999
50 M 0 1 8 41 161 335 591 549 301 89 5 1 2080
50 S 0 1 9 50 211 546 1137 1685 1986 2075 2080 2080 2080
55 M 0 0 1 12 78 206 437 396 179 34 1 0 1343
55 S 0 0 1 13 90 296 734 1130 1308 1342 1343 1343 1343
60 M 0 0 0 2 29 106 290 253 85 8 0 0 774
60 S 0 0 0 2 32 137 427 681 766 774 774 774 774
Corn Growing Degree Days
50 M 12 34 88 161 298 414 581 556 410 241 62 14 2871
50 S 12 46 134 295 593 1007 1587 2144 2554 2795 2857 2871 2871
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 Jul 28, 2006
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