VALLE AP, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(029007) VALLE AIRPORT
From Year=1947 To Year=1959
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 18 24 78 275 462 674 917 878 693 408 81 19 4526
40 S 18 42 120 396 857 1531 2447 3326 4018 4427 4507 4526 4526
45 M 2 3 20 150 316 524 762 723 543 264 18 3 3329
45 S 2 5 25 175 492 1016 1777 2501 3043 3308 3326 3329 3329
50 M 0 0 2 61 185 376 607 568 393 141 1 0 2334
50 S 0 0 2 63 248 624 1230 1799 2192 2333 2334 2334 2334
55 M 0 0 0 17 83 234 452 413 247 46 0 0 1492
55 S 0 0 0 17 100 334 786 1199 1446 1492 1492 1492 1492
60 M 0 0 0 5 25 112 298 259 118 6 0 0 824
60 S 0 0 0 5 30 142 440 699 818 824 824 824 824
Corn Growing Degree Days
50 M 43 60 117 241 367 481 585 572 472 336 120 44 3436
50 S 43 103 220 461 828 1309 1893 2465 2937 3272 3392 3436 3436
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