SIERRA VISTA, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027880) SIERRA VISTA
From Year=1982 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 240 303 474 658 930 1135 1203 1139 1006 773 427 234 8522
40 S 240 543 1017 1675 2605 3740 4943 6082 7089 7861 8288 8522 8522
45 M 118 178 325 509 775 985 1048 984 856 618 284 112 6792
45 S 118 296 620 1129 1905 2890 3938 4922 5778 6396 6680 6792 6792
50 M 38 80 191 364 620 835 893 829 706 464 160 34 5214
50 S 38 118 309 673 1293 2128 3021 3850 4557 5021 5180 5214 5214
55 M 6 21 88 228 466 685 738 674 556 314 65 4 3844
55 S 6 28 115 343 809 1494 2231 2906 3462 3776 3840 3844 3844
60 M 0 3 26 110 313 535 583 519 406 175 15 0 2687
60 S 0 3 29 139 453 988 1570 2090 2496 2671 2686 2687 2687
Corn Growing Degree Days
50 M 178 209 307 419 597 729 795 771 670 491 280 179 5624
50 S 178 387 695 1114 1711 2440 3235 4005 4676 5166 5446 5624 5624
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