CHIRICAHUA NM, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(021664) CHIRICAHUA NATL MONUMEN
From Year=1909 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 142 173 307 485 739 986 1072 1008 877 635 308 150 6881
40 S 142 315 622 1107 1845 2832 3903 4912 5789 6423 6731 6881 6881
45 M 54 80 178 340 584 836 917 853 727 481 180 58 5287
45 S 54 134 312 651 1235 2072 2988 3842 4569 5050 5229 5287 5287
50 M 12 25 81 207 431 686 762 698 577 331 81 13 3903
50 S 12 37 118 324 755 1441 2203 2901 3478 3809 3890 3903 3903
55 M 1 4 25 98 284 536 607 543 428 194 23 1 2743
55 S 1 5 30 128 412 948 1555 2098 2526 2719 2742 2743 2743
60 M 0 0 4 30 153 387 452 388 280 87 3 0 1784
60 S 0 0 4 34 188 574 1026 1414 1694 1781 1784 1784 1784
Corn Growing Degree Days
50 M 115 139 233 345 494 618 693 667 569 405 217 122 4615
50 S 115 254 486 831 1325 1942 2635 3302 3871 4276 4493 4615 4615
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