MITCHELL DAM, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1937 To Year=2012
Station:(015465) MITCHELL DAM
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 289 230 669 -99 961 1122 1343 1308 1115 -99 394 326 -99
40 S 289 518 1187 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
45 M 176 132 514 -99 806 972 1188 1153 965 -99 256 189 -99
45 S 176 307 821 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
50 M 92 65 370 -99 651 822 1033 998 815 -99 160 95 -99
50 S 92 156 526 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
55 M 35 30 247 -99 496 672 878 843 665 -99 89 44 -99
55 S 35 65 311 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
60 M 7 9 144 -99 341 522 723 688 515 -99 38 12 -99
60 S 7 16 160 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
Corn Growing Degree Days
50 M 167 114 420 -99 651 771 938 917 786 -99 197 170 -99
50 S 167 281 701 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
Derived form the 1937-2012 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