GRAND CANYON AIRWAYS, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(023586) GRAND CANYON AIRWAYS
From Year=1948 To Year=1967
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 9 20 55 195 437 720 921 839 639 358 80 13 4287
40 S 9 29 84 279 717 1437 2358 3197 3836 4194 4274 4287 4287
45 M 1 3 13 98 300 570 766 684 491 225 25 1 3177
45 S 1 4 18 116 415 986 1752 2436 2926 3152 3176 3177 3177
50 M 0 0 2 37 178 423 611 529 344 116 4 0 2243
50 S 0 0 2 38 216 639 1250 1779 2123 2239 2243 2243 2243
55 M 0 0 0 8 78 284 456 374 205 39 0 0 1445
55 S 0 0 0 8 86 371 827 1201 1405 1445 1445 1445 1445
60 M 0 0 0 1 23 163 302 222 93 7 0 0 809
60 S 0 0 0 1 23 186 488 710 802 809 809 809 809
Corn Growing Degree Days
50 M 8 19 53 153 298 473 593 531 401 237 68 18 2852
50 S 8 27 80 234 532 1004 1597 2128 2529 2766 2834 2852 2852
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