WINCHESTER, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(359461) WINCHESTER
From Year=1950 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 108 136 238 335 529 678 917 905 729 452 200 91 5321
40 S 108 244 482 817 1346 2025 2942 3848 4577 5029 5230 5321 5321
45 M 34 47 110 193 375 528 762 750 579 299 87 30 3795
45 S 34 81 190 384 758 1287 2049 2800 3379 3678 3766 3795 3795
50 M 5 10 33 84 226 379 607 595 429 161 27 6 2563
50 S 5 15 48 132 358 737 1344 1939 2369 2530 2557 2563 2563
55 M 0 1 4 26 110 234 452 440 281 63 6 1 1620
55 S 0 2 6 32 142 376 828 1268 1550 1613 1620 1620 1620
60 M 0 0 1 6 43 113 298 286 147 17 1 0 912
60 S 0 0 1 7 50 163 461 747 894 911 912 912 912
Corn Growing Degree Days
50 M 31 59 125 181 297 396 575 566 448 255 73 24 3030
50 S 31 90 215 396 693 1089 1664 2230 2678 2933 3006 3030 3030
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