SILVERTON 4 SE, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357827) SILVERTON 4 SE
From Year=1899 To Year=1962
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 68 81 118 261 433 592 788 785 643 401 147 82 4400
40 S 68 149 267 528 961 1553 2341 3126 3770 4171 4318 4400 4400
45 M 19 23 37 132 280 442 633 630 493 252 56 25 3021
45 S 19 42 78 210 490 932 1565 2194 2688 2939 2996 3021 3021
50 M 1 4 7 51 147 293 478 475 344 127 10 4 1940
50 S 1 5 12 63 210 503 981 1456 1799 1926 1936 1940 1940
55 M 0 0 0 14 63 158 324 320 204 48 0 0 1133
55 S 0 0 1 15 78 236 561 881 1084 1133 1133 1133 1133
60 M 0 0 0 2 23 67 183 173 96 14 0 0 558
60 S 0 0 0 2 25 92 275 448 544 558 558 558 558
Corn Growing Degree Days
50 M 13 18 43 117 214 321 474 472 365 181 40 16 2275
50 S 13 31 74 191 405 726 1201 1672 2037 2218 2258 2275 2275
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