MOLALLA 1 NW, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(355677) MOLALLA 1 NW
From Year=1935 To Year=1976
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 92 122 176 287 480 623 797 795 650 402 192 107 4723
40 S 92 215 391 677 1158 1781 2577 3372 4023 4425 4616 4723 4723
45 M 34 43 65 147 326 473 642 640 500 253 87 38 3247
45 S 34 78 143 290 615 1088 1730 2370 2870 3123 3209 3247 3247
50 M 8 10 14 51 181 323 487 485 351 124 23 8 2063
50 S 8 18 31 82 263 587 1073 1558 1909 2033 2056 2063 2063
55 M 0 1 1 12 74 181 332 330 207 41 2 1 1183
55 S 0 1 3 15 89 270 602 932 1139 1180 1182 1183 1183
60 M 0 0 0 2 22 75 182 181 89 8 0 0 558
60 S 0 0 0 2 24 98 280 461 550 558 558 558 558
Corn Growing Degree Days
50 M 24 49 84 156 271 357 488 489 397 220 74 28 2636
50 S 24 73 157 313 584 941 1429 1918 2315 2534 2608 2636 2636
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