MEDFORD WSO AP, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(355429) MEDFORD WSO AP
From Year=1928 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 54 111 220 351 575 762 1018 994 771 460 145 56 5519
40 S 54 166 386 737 1312 2074 3092 4086 4856 5317 5462 5519 5519
45 M 14 37 102 212 420 612 863 839 621 310 58 16 4105
45 S 14 52 154 365 786 1398 2261 3100 3720 4030 4088 4105 4105
50 M 2 7 33 105 273 463 708 684 471 177 16 3 2941
50 S 2 9 42 147 420 882 1590 2274 2745 2922 2938 2941 2941
55 M 0 1 6 40 150 315 553 529 325 79 3 0 2002
55 S 0 1 7 47 197 512 1065 1594 1919 1998 2001 2002 2002
60 M 0 0 0 10 68 182 399 375 194 25 0 0 1253
60 S 0 0 0 10 78 260 659 1034 1227 1253 1253 1253 1253
Corn Growing Degree Days
50 M 21 69 140 222 354 464 624 606 478 298 75 19 3369
50 S 21 90 230 452 806 1270 1894 2500 2978 3275 3350 3369 3369
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