SUPERIOR, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(028348) SUPERIOR
From Year=1920 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 379 419 570 764 1066 1315 1449 1389 1252 1000 614 402 10618
40 S 379 798 1368 2131 3197 4512 5960 7350 8602 9602 10216 10618 10618
45 M 239 286 419 614 911 1165 1294 1234 1102 845 467 261 8837
45 S 239 525 944 1559 2469 3634 4928 6162 7264 8109 8576 8837 8837
50 M 124 170 281 467 756 1015 1139 1079 952 691 327 142 7143
50 S 124 294 575 1043 1798 2813 3952 5031 5983 6674 7001 7143 7143
55 M 49 82 166 328 601 865 984 924 802 538 203 58 5602
55 S 49 131 297 626 1227 2092 3076 4000 4802 5341 5544 5602 5602
60 M 12 29 82 203 450 715 829 769 652 391 104 15 4251
60 S 12 42 123 326 776 1491 2320 3089 3741 4132 4236 4251 4251
Corn Growing Degree Days
50 M 185 218 324 482 709 866 956 931 849 668 354 197 6738
50 S 185 403 727 1208 1918 2783 3739 4670 5519 6187 6541 6738 6738
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