SAN SIMON 9 ESE, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027567) SAN SIMON 9 ESE
From Year=1962 To Year=1986
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 169 242 416 608 908 1156 1297 1230 1030 749 391 186 8382
40 S 169 411 827 1435 2342 3498 4796 6025 7056 7805 8195 8382 8382
45 M 67 130 272 460 753 1006 1142 1075 880 595 254 80 6714
45 S 67 198 470 930 1682 2688 3831 4905 5786 6380 6635 6714 6714
50 M 16 51 152 318 598 856 987 920 730 442 138 21 5229
50 S 16 67 219 536 1134 1990 2978 3897 4628 5069 5208 5229 5229
55 M 2 12 65 189 445 706 832 765 581 295 55 3 3950
55 S 2 14 79 268 713 1419 2252 3017 3597 3892 3947 3950 3950
60 M 0 1 20 86 297 556 677 610 432 164 13 0 2856
60 S 0 1 20 106 403 959 1637 2247 2678 2842 2855 2856 2856
Corn Growing Degree Days
50 M 147 196 307 421 581 707 824 797 670 483 270 158 5560
50 S 147 343 650 1071 1652 2359 3183 3979 4650 5132 5402 5560 5560
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