GUNTERSVILLE, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1904 To Year=2012
Station:(013573) GUNTERSVILLE
Averages Daily Extremes
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 139 207 415 653 912 1092 1220 1206 1010 701 368 192 8114
40 S 139 346 761 1413 2326 3418 4638 5844 6854 7554 7922 8114 8114
45 M 71 120 280 504 757 942 1065 1051 860 547 239 108 6544
45 S 71 191 471 975 1732 2674 3739 4790 5650 6197 6436 6544 6544
50 M 32 60 168 360 602 792 910 896 710 395 135 53 5114
50 S 32 92 260 620 1222 2015 2924 3821 4531 4926 5061 5114 5114
55 M 11 23 87 230 448 642 755 741 560 253 63 21 3835
55 S 11 35 122 352 800 1442 2197 2938 3498 3751 3814 3835 3835
60 M 2 6 36 124 300 492 600 586 411 137 22 6 2722
60 S 2 8 45 169 469 961 1561 2147 2558 2695 2716 2722 2722
Corn Growing Degree Days
50 M 82 130 257 416 602 744 834 822 679 443 226 113 5348
50 S 82 212 469 884 1486 2230 3064 3886 4565 5008 5234 5348 5348
Derived form the 1904-2012 Data
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 May 22,
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Southeast Regional Climate Center, SERCC Webmaster