YOUNGTOWN, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(029634) YOUNGTOWN
From Year=1964 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 430 492 698 883 1193 1415 1626 1583 1352 1035 632 405 11744
40 S 430 922 1620 2503 3696 5111 6737 8320 9672 10707 11339 11744 11744
45 M 279 353 543 733 1038 1265 1471 1428 1202 880 482 255 9930
45 S 279 632 1175 1908 2946 4211 5682 7110 8312 9192 9674 9930 9930
50 M 145 218 390 583 883 1115 1316 1273 1052 725 335 125 8160
50 S 145 363 753 1336 2219 3334 4649 5923 6974 7700 8035 8160 8160
55 M 50 105 245 434 728 965 1161 1118 902 571 200 38 6516
55 S 50 155 400 834 1562 2527 3688 4806 5708 6278 6479 6516 6516
60 M 10 33 127 292 574 815 1006 963 752 418 93 5 5087
60 S 10 42 169 461 1035 1850 2855 3819 4570 4989 5082 5087 5087
Corn Growing Degree Days
50 M 272 309 438 559 742 853 1005 986 847 662 399 257 7329
50 S 272 581 1019 1578 2320 3173 4178 5164 6011 6673 7072 7329 7329
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