ROSEBURG RGNL AP, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357326) ROSEBURG WB AIRPORT
From Year=1899 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 100 146 236 371 538 678 880 879 714 474 216 130 5362
40 S 100 246 482 853 1391 2069 2949 3828 4542 5017 5232 5362 5362
45 M 33 58 111 227 384 528 725 724 564 322 103 50 3829
45 S 33 92 202 429 813 1341 2066 2790 3354 3676 3779 3829 3829
50 M 6 15 37 110 236 378 570 569 414 184 34 13 2565
50 S 6 21 57 167 403 781 1351 1920 2334 2518 2552 2565 2565
55 M 0 2 8 40 114 233 415 414 268 79 7 1 1581
55 S 0 2 10 50 164 397 812 1226 1493 1573 1579 1581 1581
60 M 0 0 0 10 41 111 262 260 140 23 1 0 849
60 S 0 0 0 10 52 162 425 685 825 848 849 849 849
Corn Growing Degree Days
50 M 34 64 123 212 308 399 547 549 437 263 84 38 3058
50 S 34 98 220 432 741 1140 1687 2235 2673 2935 3020 3058 3058
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