SKULL VALLEY, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027965) SKULL VALLEY
From Year=1972 To Year=1980
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 119 159 199 342 612 931 1123 1040 882 639 276 153 6478
40 S 119 279 478 820 1433 2363 3487 4527 5409 6048 6325 6478 6478
45 M 43 64 92 210 458 781 968 885 732 486 157 60 4937
45 S 43 108 200 410 868 1648 2617 3502 4234 4720 4877 4937 4937
50 M 9 17 34 100 308 631 813 730 582 340 71 15 3651
50 S 9 26 60 160 469 1099 1913 2643 3225 3565 3636 3651 3651
55 M 1 2 9 31 174 481 658 575 432 208 23 1 2596
55 S 1 3 12 43 218 698 1357 1932 2364 2572 2596 2596 2596
60 M 0 0 0 6 78 334 503 420 284 105 3 0 1733
60 S 0 0 0 6 84 417 921 1341 1626 1730 1733 1733 1733
Corn Growing Degree Days
50 M 110 144 177 284 436 577 697 653 564 423 222 149 4436
50 S 110 254 431 715 1151 1728 2425 3078 3642 4065 4287 4436 4436
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