VALLEY HEAD, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1893 To Year=2012
Station:(018469) VALLEY HEAD
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 122 144 330 546 819 1016 1146 1128 939 621 297 143 7253
40 S 122 266 596 1143 1962 2978 4124 5253 6191 6813 7110 7253 7253
45 M 61 76 212 403 664 866 991 973 789 470 185 74 5764
45 S 61 137 348 752 1416 2282 3273 4247 5036 5505 5691 5764 5764
50 M 26 33 120 272 511 716 836 818 639 328 100 32 4432
50 S 26 60 180 452 962 1678 2515 3333 3972 4300 4400 4432 4432
55 M 9 11 58 161 362 566 681 663 490 203 45 10 3261
55 S 9 20 78 239 601 1167 1849 2512 3002 3205 3250 3261 3261
60 M 2 2 23 78 227 417 526 508 346 106 15 2 2252
60 S 2 4 27 105 332 749 1275 1783 2129 2235 2250 2252 2252
Corn Growing Degree Days
50 M 76 98 216 353 534 682 778 764 625 412 202 92 4830
50 S 76 173 389 742 1276 1958 2736 3500 4124 4536 4738 4830 4830
Derived form the 1893-2012 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