ASH FORK 3, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(020487) ASH FORK 2
From Year=1940 To Year=1999
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 20 87 196 504 674 967 996 799 493 -99 -99 -99
40 S 22 42 129 325 828 1502 2469 3465 4264 4757 -99 -99 -99
45 M 6 3 21 74 349 524 812 841 649 338 -99 -99 -99
45 S 6 9 30 104 452 976 1788 2629 3278 3616 -99 -99 -99
50 M 0 0 0 5 197 374 657 686 499 183 -99 -99 -99
50 S 0 0 0 5 202 576 1233 1918 2417 2600 -99 -99 -99
55 M 0 0 0 0 74 227 502 531 349 63 -99 -99 -99
55 S 0 0 0 0 74 301 803 1333 1682 1745 -99 -99 -99
60 M 0 0 0 0 11 100 347 376 200 8 -99 -99 -99
60 S 0 0 0 0 11 111 458 833 1033 1041 -99 -99 -99
Corn Growing Degree Days
50 M 48 40 115 185 367 464 601 602 507 379 -99 -99 -99
50 S 48 88 203 387 754 1218 1818 2420 2927 3306 -99 -99 -99
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