SAN MANUEL, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027530) SAN MANUEL
From Year=1954 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 248 309 493 678 973 1236 1343 1268 1110 845 462 264 9230
40 S 248 558 1051 1729 2702 3938 5281 6550 7660 8504 8966 9230 9230
45 M 125 185 345 529 818 1086 1188 1113 960 690 318 139 7496
45 S 125 310 655 1183 2002 3088 4276 5389 6349 7039 7357 7496 7496
50 M 42 87 213 383 663 936 1033 958 810 537 187 51 5902
50 S 42 129 342 725 1389 2325 3358 4316 5126 5663 5851 5902 5902
55 M 8 29 109 247 509 786 878 803 660 388 83 11 4513
55 S 8 37 146 393 902 1688 2567 3370 4030 4418 4501 4513 4513
60 M 1 6 42 131 358 636 723 648 510 250 24 1 3330
60 S 1 7 49 180 538 1174 1897 2545 3055 3305 3329 3330 3330
Corn Growing Degree Days
50 M 167 206 319 438 619 769 865 829 730 546 289 175 5952
50 S 167 372 692 1130 1749 2518 3382 4212 4942 5488 5777 5952 5952
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