ROOSEVELT 1 WNW, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027281) ROOSEVELT 1 WNW
From Year=1905 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 259 344 549 770 1076 1330 1512 1447 1240 930 524 278 10257
40 S 259 602 1151 1922 2998 4328 5840 7286 8526 9456 9980 10257 10257
45 M 125 210 396 621 921 1180 1357 1292 1090 775 376 140 8481
45 S 125 335 730 1351 2272 3452 4809 6100 7190 7965 8340 8481 8481
50 M 36 98 251 472 767 1030 1202 1137 940 620 235 44 6829
50 S 36 133 384 855 1622 2652 3853 4990 5930 6549 6785 6829 6829
55 M 4 29 128 328 612 880 1047 982 790 466 117 6 5388
55 S 4 33 161 488 1100 1980 3027 4008 4798 5265 5382 5388 5388
60 M 0 4 47 197 459 730 892 827 640 318 40 0 4153
60 S 0 4 51 248 707 1437 2328 3155 3795 4113 4153 4153 4153
Corn Growing Degree Days
50 M 149 203 328 480 688 826 949 924 801 598 307 157 6410
50 S 149 352 680 1159 1847 2673 3622 4546 5347 5946 6253 6410 6410
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