ST MICHAELS 6 WNW, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027440) ST MICHAELS 6 WNW
From Year=1906 To Year=1927
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 4 8 57 183 411 718 910 842 593 281 51 4 4062
40 S 4 12 69 252 664 1381 2291 3133 3726 4007 4058 4062 4062
45 M 1 0 13 79 266 568 755 687 443 153 10 0 2974
45 S 1 1 14 92 358 926 1681 2367 2811 2964 2974 2974 2974
50 M 0 0 1 21 138 419 600 532 297 61 1 0 2070
50 S 0 0 1 22 160 579 1179 1711 2008 2069 2070 2070 2070
55 M 0 0 0 3 50 274 445 377 162 16 0 0 1325
55 S 0 0 0 3 52 326 771 1148 1310 1325 1325 1325 1325
60 M 0 0 0 0 9 144 290 223 56 2 0 0 724
60 S 0 0 0 0 9 153 443 666 722 724 724 724 724
Corn Growing Degree Days
50 M 10 20 71 170 312 486 584 538 391 241 88 18 2927
50 S 10 29 100 270 582 1068 1652 2190 2580 2821 2910 2927 2927
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