CANYON DE CHELLY, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(021248) CANYON DE CHELLY
From Year=1970 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 14 47 186 378 660 917 1121 1055 783 435 118 17 5731
40 S 14 61 247 625 1285 2202 3323 4378 5161 5596 5714 5731 5731
45 M 2 12 88 243 506 767 966 900 633 293 48 3 4461
45 S 2 14 103 346 851 1618 2584 3485 4117 4410 4458 4461 4461
50 M 0 2 30 130 356 617 811 745 484 166 13 0 3353
50 S 0 2 32 162 518 1135 1946 2691 3175 3340 3353 3353 3353
55 M 0 0 6 51 218 467 656 590 337 70 1 0 2398
55 S 0 0 6 58 276 744 1400 1990 2327 2396 2398 2398 2398
60 M 0 0 1 12 107 321 501 435 200 18 0 0 1596
60 S 0 0 1 13 120 442 943 1378 1578 1596 1596 1596 1596
Corn Growing Degree Days
50 M 22 58 171 289 447 578 708 683 514 317 114 25 3927
50 S 22 80 251 540 987 1564 2272 2955 3470 3787 3901 3927 3927
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