DAVIS DAM #2, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(022439) DAVIS DAM # 2
From Year=1958 To Year=1977
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 382 475 669 868 1178 1443 1710 1663 1365 1062 637 418 11871
40 S 382 856 1526 2394 3572 5015 6726 8389 9754 10817 11453 11871 11871
45 M 236 334 515 718 1023 1293 1555 1508 1215 907 487 266 10058
45 S 236 570 1085 1803 2826 4119 5675 7183 8398 9306 9793 10058 10058
50 M 118 200 362 568 868 1143 1400 1353 1065 753 340 137 8309
50 S 118 318 680 1249 2117 3260 4660 6014 7079 7832 8172 8309 8309
55 M 40 90 221 421 714 993 1245 1198 915 599 200 50 6687
55 S 40 130 351 772 1486 2479 3724 4922 5837 6437 6637 6687 6687
60 M 9 26 109 282 560 843 1090 1043 765 447 87 12 5273
60 S 9 35 144 425 985 1828 2919 3962 4727 5174 5261 5273 5273
Corn Growing Degree Days
50 M 200 263 398 546 753 894 1049 1030 865 689 369 214 7271
50 S 200 463 861 1407 2160 3055 4104 5134 5999 6688 7057 7271 7271
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