FREDONIA, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(023250) FREDONIA
From Year=1906 To Year=2011
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 13 45 134 315 561 807 1071 1008 745 431 123 21 5273
40 S 13 58 192 507 1068 1876 2946 3954 4699 5130 5253 5273 5273
45 M 1 11 53 184 409 657 916 853 595 284 46 3 4013
45 S 1 13 66 249 658 1315 2231 3084 3679 3963 4009 4013 4013
50 M 0 2 13 82 265 507 761 698 445 155 10 0 2938
50 S 0 2 15 97 362 870 1630 2328 2773 2928 2938 2938 2938
55 M 0 0 2 22 140 359 606 543 298 58 2 0 2029
55 S 0 0 2 24 164 523 1129 1672 1970 2027 2029 2029 2029
60 M 0 0 0 3 50 220 451 388 160 11 0 0 1283
60 S 0 0 0 3 52 273 723 1111 1271 1283 1283 1283 1283
Corn Growing Degree Days
50 M 27 65 163 281 423 526 650 632 503 346 142 40 3799
50 S 27 92 255 536 959 1486 2136 2768 3271 3617 3759 3799 3799
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