BLUE, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(020855) BLUE
From Year=1903 To Year=1989
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 24 66 144 305 542 789 951 885 690 414 131 26 4966
40 S 24 90 234 539 1081 1870 2821 3706 4396 4810 4940 4966 4966
45 M 2 17 56 172 388 639 796 730 540 267 43 3 3653
45 S 2 18 75 247 635 1274 2070 2800 3340 3607 3650 3653 3653
50 M 0 3 13 70 241 489 641 575 390 137 6 0 2566
50 S 0 3 16 86 327 816 1457 2032 2422 2559 2566 2566 2566
55 M 0 0 1 18 118 340 486 420 242 45 0 0 1671
55 S 0 0 1 19 137 477 963 1383 1626 1671 1671 1671 1671
60 M 0 0 0 3 40 200 332 265 110 7 0 0 957
60 S 0 0 0 3 42 242 574 839 950 957 957 957 957
Corn Growing Degree Days
50 M 83 129 201 310 442 527 587 566 464 345 182 93 3931
50 S 83 213 413 724 1165 1692 2280 2846 3310 3656 3838 3931 3931
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