RIVERSIDE, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357208) RIVERSIDE
From Year=1897 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 9 19 89 233 462 693 968 896 563 266 50 13 4259
40 S 9 27 117 350 811 1504 2473 3368 3931 4197 4247 4259 4259
45 M 1 3 29 124 314 543 813 741 415 144 16 3 3147
45 S 1 5 34 158 471 1015 1828 2569 2984 3128 3144 3147 3147
50 M 0 0 5 52 185 395 658 586 276 61 3 0 2223
50 S 0 0 6 58 243 638 1296 1882 2159 2220 2223 2223 2223
55 M 0 0 0 16 89 257 504 432 157 17 0 0 1474
55 S 0 0 0 16 105 363 867 1299 1456 1474 1474 1474 1474
60 M 0 0 0 3 34 143 353 285 70 3 0 0 891
60 S 0 0 0 3 37 180 533 818 888 891 891 891 891
Corn Growing Degree Days
50 M 4 17 91 209 348 465 589 563 426 265 59 6 3044
50 S 4 21 113 322 670 1135 1724 2288 2714 2979 3037 3044 3044
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