BLUE RIDGE RS, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(020871) BLUE RIDGE RANGER STN
From Year=1967 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 5 13 59 164 393 660 861 787 567 264 70 11 3855
40 S 5 18 77 241 635 1295 2156 2943 3510 3774 3844 3855 3855
45 M 0 2 17 74 252 510 706 632 418 142 21 1 2776
45 S 0 2 19 93 345 855 1561 2194 2611 2754 2775 2776 2776
50 M 0 0 2 23 134 362 551 478 272 54 3 0 1880
50 S 0 0 3 26 160 522 1073 1551 1823 1877 1880 1880 1880
55 M 0 0 0 4 53 224 396 323 143 13 0 0 1156
55 S 0 0 0 4 57 281 677 1000 1143 1156 1156 1156 1156
60 M 0 0 0 0 14 112 243 174 50 1 0 0 593
60 S 0 0 0 0 14 126 369 542 593 593 593 593 593
Corn Growing Degree Days
50 M 21 36 84 162 298 454 555 500 378 233 101 36 2857
50 S 21 57 141 303 600 1055 1609 2109 2487 2720 2821 2857 2857
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