OROFINO, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(106681) OROFINO
From Year=1903 To Year=1981
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 6 28 129 337 577 767 1023 975 676 351 63 9 4940
40 S 6 33 162 499 1075 1842 2865 3840 4517 4867 4930 4940 4940
45 M 1 3 46 199 422 617 868 820 527 210 15 1 3727
45 S 1 4 49 248 670 1287 2155 2975 3501 3711 3726 3727 3727
50 M 0 0 11 95 274 467 713 665 379 100 2 0 2706
50 S 0 0 11 106 380 847 1560 2225 2604 2704 2706 2706 2706
55 M 0 0 1 35 151 320 558 510 241 34 0 0 1850
55 S 0 0 1 36 187 507 1065 1575 1816 1850 1850 1850 1850
60 M 0 0 0 9 66 186 404 358 127 6 0 0 1156
60 S 0 0 0 9 74 261 665 1023 1150 1156 1156 1156 1156
Corn Growing Degree Days
50 M 2 19 99 237 372 475 602 578 438 236 29 2 3088
50 S 2 20 119 357 729 1204 1806 2384 2822 3057 3086 3088 3088
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