SAFFORD AGRICULTRL CTR, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027390) SAFFORD AGRICULTRL CTR
From Year=1948 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 164 248 438 650 934 1180 1335 1270 1068 772 379 165 8603
40 S 164 412 849 1500 2434 3613 4948 6219 7287 8059 8438 8603 8603
45 M 62 134 292 501 779 1030 1180 1115 918 618 242 65 6936
45 S 62 196 488 989 1768 2798 3978 5093 6011 6629 6871 6936 6936
50 M 13 53 166 357 625 880 1025 960 768 465 127 15 5453
50 S 13 66 232 588 1213 2093 3118 4078 4846 5311 5438 5453 5453
55 M 1 12 73 224 472 730 870 805 618 318 48 1 4171
55 S 1 13 86 310 781 1511 2381 3186 3804 4122 4170 4171 4171
60 M 0 1 21 113 323 580 715 650 468 184 12 0 3068
60 S 0 1 22 135 458 1038 1753 2403 2871 3055 3067 3068 3068
Corn Growing Degree Days
50 M 163 212 325 446 584 699 836 808 671 508 294 164 5710
50 S 163 375 700 1146 1730 2429 3265 4072 4743 5251 5546 5710 5710
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