MARICOPA 9 SSW, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(025274) MARICOPA 9 SSW
From Year=1898 To Year=1958
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 278 384 576 796 1090 1347 1584 1538 1290 944 518 305 10650
40 S 278 662 1238 2035 3124 4471 6055 7593 8883 9828 10345 10650 10650
45 M 144 249 422 646 935 1197 1429 1383 1140 789 369 166 8871
45 S 144 394 816 1462 2397 3594 5023 6406 7546 8335 8705 8871 8871
50 M 52 131 272 497 780 1047 1274 1228 990 634 230 65 7200
50 S 52 183 455 952 1732 2778 4053 5281 6271 6905 7135 7200 7200
55 M 9 48 142 350 625 897 1119 1073 840 480 115 15 5715
55 S 9 58 200 550 1175 2072 3191 4264 5104 5584 5700 5715 5715
60 M 1 10 55 216 471 747 964 918 690 332 42 2 4449
60 S 1 11 66 282 753 1500 2464 3382 4072 4404 4447 4449 4449
Corn Growing Degree Days
50 M 236 288 403 506 642 771 950 933 770 587 383 247 6716
50 S 236 524 928 1434 2076 2847 3797 4730 5499 6086 6469 6716 6716
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