OROVILLE 3 NW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(456188) OROVILLE 3 NW
From Year=1909 To Year=1960
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 2 9 101 350 609 777 1018 954 663 315 41 5 4845
40 S 2 11 112 463 1071 1849 2867 3821 4484 4799 4840 4845 4845
45 M 0 1 35 211 454 627 863 799 513 182 7 1 3693
45 S 0 1 36 247 701 1328 2191 2990 3504 3685 3693 3693 3693
50 M 0 0 8 100 303 478 708 644 366 83 0 0 2689
50 S 0 0 8 108 411 888 1596 2240 2606 2689 2689 2689 2689
55 M 0 0 1 34 170 329 553 489 228 27 0 0 1831
55 S 0 0 1 35 205 534 1087 1576 1803 1831 1831 1831 1831
60 M 0 0 0 7 74 191 399 336 115 6 0 0 1128
60 S 0 0 0 7 81 272 672 1007 1122 1128 1128 1128 1128
Corn Growing Degree Days
50 M 0 3 66 227 385 482 638 601 416 186 12 1 3017
50 S 0 4 70 297 682 1164 1802 2402 2818 3004 3016 3017 3017
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