JACOB LAKE, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(024418) JACOB LAKE
From Year=1916 To Year=1987
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 5 6 27 89 354 599 773 710 514 215 33 4 3329
40 S 5 11 38 128 482 1081 1853 2563 3077 3292 3325 3329 3329
45 M 1 1 6 34 218 449 618 555 367 105 6 0 2358
45 S 1 2 8 42 260 708 1326 1881 2248 2353 2358 2358 2358
50 M 0 0 1 8 106 303 463 400 227 33 0 0 1541
50 S 0 0 1 9 115 418 881 1281 1508 1541 1541 1541 1541
55 M 0 0 0 0 34 175 308 248 110 6 0 0 880
55 S 0 0 0 0 35 210 518 765 875 880 880 880 880
60 M 0 0 0 0 7 76 159 108 36 0 0 0 387
60 S 0 0 0 0 7 84 242 351 386 387 387 387 387
Corn Growing Degree Days
50 M 9 9 30 78 239 384 483 436 330 157 35 9 2197
50 S 9 18 47 125 364 747 1231 1667 1997 2154 2188 2197 2197
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