OPELIKA, ALABAMA

Period of Record General Climate Summary - Growing Degree Days

From Year=1957 To Year=2012
Station:(016129) OPELIKA
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 174 212 434 646 900 1076 1200 1187 1004 696 420 234 8185
40 S 174 387 821 1467 2367 3443 4643 5830 6835 7531 7951 8185 8185
45 M 94 125 298 497 745 926 1045 1032 854 542 285 135 6579
45 S 94 219 517 1014 1759 2685 3730 4763 5617 6159 6444 6579 6579
50 M 43 64 182 353 590 776 890 877 704 390 171 71 5111
50 S 43 106 288 641 1231 2007 2897 3775 4479 4869 5040 5111 5111
55 M 15 26 94 223 436 626 735 722 555 251 87 32 3802
55 S 15 42 136 359 795 1421 2156 2878 3433 3684 3770 3802 3802
60 M 4 8 39 116 288 476 580 568 406 135 35 11 2666
60 S 4 12 51 167 455 931 1511 2079 2485 2621 2656 2666 2666
Corn Growing Degree Days
50 M 114 148 284 421 593 726 819 813 676 452 276 155 5478
50 S 114 262 546 967 1561 2287 3106 3919 4594 5047 5323 5478 5478
Derived form the 1957-2012 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