PRINEVILLE 4 NW, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(356883) PRINEVILLE 4 NW
From Year=1897 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 22 36 83 188 378 550 767 725 493 266 76 27 3611
40 S 22 58 141 330 707 1257 2024 2750 3242 3508 3584 3611 3611
45 M 4 8 27 90 236 400 612 570 346 144 25 6 2469
45 S 4 13 39 130 366 766 1378 1948 2294 2438 2463 2469 2469
50 M 0 1 5 33 124 257 458 416 210 57 5 1 1566
50 S 0 2 6 39 163 420 877 1293 1504 1561 1565 1566 1566
55 M 0 0 0 8 52 137 305 267 102 16 0 0 887
55 S 0 0 0 9 60 197 502 769 871 887 887 887 887
60 M 0 0 0 1 16 56 169 139 35 3 0 0 420
60 S 0 0 0 1 17 73 242 382 417 420 420 420 420
Corn Growing Degree Days
50 M 17 34 93 183 296 384 516 506 396 255 76 21 2776
50 S 17 51 143 326 622 1006 1521 2027 2424 2679 2755 2776 2776
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