CONGRESS, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(022020) CONGRESS
From Year=1970 To Year=1980
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 272 345 438 610 914 1246 1432 1343 1147 853 483 293 9375
40 S 272 617 1055 1664 2579 3824 5256 6599 7745 8599 9082 9375 9375
45 M 148 213 292 461 759 1096 1277 1188 997 699 338 164 7632
45 S 148 361 653 1114 1874 2969 4246 5434 6430 7129 7467 7632 7632
50 M 66 105 168 320 604 946 1122 1033 847 546 207 69 6031
50 S 66 171 338 658 1263 2209 3330 4363 5210 5756 5962 6031 6031
55 M 23 36 87 196 450 796 967 878 697 399 105 17 4649
55 S 23 60 146 342 792 1588 2554 3432 4129 4527 4632 4649 4649
60 M 6 9 38 95 305 646 812 723 547 263 39 1 3483
60 S 6 14 52 148 453 1099 1910 2633 3180 3443 3482 3483 3483
Corn Growing Degree Days
50 M 151 195 262 382 592 794 914 875 760 546 280 170 5920
50 S 151 347 609 991 1582 2376 3290 4165 4924 5470 5750 5920 5920
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