NOGALES, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(025921) NOGALES
From Year=1892 To Year=1983
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 204 256 397 570 804 1062 1213 1137 986 725 402 233 7990
40 S 204 460 858 1428 2232 3294 4507 5644 6630 7355 7757 7990 7990
45 M 91 138 252 421 649 912 1058 982 836 570 261 112 6283
45 S 91 229 482 903 1552 2464 3522 4504 5340 5910 6171 6283 6283
50 M 25 53 129 278 494 762 903 827 686 417 138 35 4748
50 S 25 79 208 486 980 1743 2646 3472 4159 4575 4713 4748 4748
55 M 4 12 47 152 342 612 748 672 536 269 51 7 3451
55 S 4 16 63 214 557 1169 1917 2589 3125 3394 3445 3451 3451
60 M 0 1 11 61 201 462 593 517 387 140 10 1 2383
60 S 0 1 12 73 274 737 1329 1846 2233 2372 2382 2383 2383
Corn Growing Degree Days
50 M 210 237 323 417 534 645 778 741 630 497 336 231 5580
50 S 210 447 770 1188 1722 2366 3145 3886 4516 5013 5349 5580 5580
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