SHOW LOW, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027849) SHOW LOW
From Year=1893 To Year=1965
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 27 36 94 276 476 755 949 888 727 418 80 21 4746
40 S 27 62 156 433 908 1664 2612 3500 4227 4645 4725 4746 4746
45 M 6 8 30 151 327 605 794 733 577 275 23 3 3532
45 S 6 14 44 195 522 1127 1921 2654 3231 3506 3529 3532 3532
50 M 1 1 4 59 193 456 639 578 427 150 4 0 2510
50 S 1 1 5 65 258 713 1352 1930 2356 2507 2510 2510 2510
55 M 0 0 0 14 88 309 484 423 277 58 0 0 1652
55 S 0 0 0 14 101 410 894 1317 1594 1652 1652 1652 1652
60 M 0 0 0 0 21 178 329 268 144 10 0 0 951
60 S 0 0 0 0 21 199 528 796 940 951 951 951 951
Corn Growing Degree Days
50 M 33 47 103 227 344 502 609 569 470 311 104 29 3348
50 S 33 80 183 410 754 1256 1865 2434 2904 3215 3319 3348 3348
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