PUNKIN CENTER, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(026840) PUNKIN CENTER
From Year=1973 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 199 276 464 674 968 1233 1446 1395 1163 835 416 176 9246
40 S 199 476 940 1614 2581 3815 5261 6656 7819 8654 9070 9246 9246
45 M 80 150 313 524 813 1083 1291 1240 1013 680 274 65 7526
45 S 80 230 543 1067 1880 2964 4255 5495 6507 7187 7461 7526 7526
50 M 17 57 178 378 658 933 1136 1085 863 526 150 11 5992
50 S 17 73 251 629 1287 2221 3357 4441 5304 5830 5981 5992 5992
55 M 1 12 77 242 504 783 981 930 713 375 62 1 4682
55 S 1 14 91 333 837 1620 2601 3531 4244 4619 4682 4682 4682
60 M 0 2 23 127 354 633 826 775 563 233 16 0 3552
60 S 0 2 25 152 506 1139 1966 2740 3303 3536 3552 3552 3552
Corn Growing Degree Days
50 M 164 213 321 445 600 722 882 861 718 537 307 162 5930
50 S 164 377 698 1142 1742 2464 3346 4208 4925 5462 5769 5930 5930
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