SELMER, TENNESSEE

Period of Record General Climate Summary - Growing Degree Days

From Year=1923 To Year=2012
Station:(408160) SELMER
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 107 147 350 597 858 1054 1198 1170 936 618 325 143 7503
40 S 107 254 604 1201 2060 3114 4312 5482 6417 7035 7360 7503 7503
45 M 56 83 234 453 703 904 1043 1015 786 466 212 77 6032
45 S 56 139 374 826 1530 2434 3477 4492 5277 5743 5955 6032 6032
50 M 26 40 141 319 549 754 888 860 636 324 122 35 4694
50 S 26 65 207 526 1075 1828 2717 3576 4212 4536 4658 4694 4694
55 M 10 15 75 202 398 604 733 705 487 203 60 14 3505
55 S 10 25 99 302 700 1303 2037 2741 3229 3431 3492 3505 3505
60 M 3 4 31 111 259 454 578 550 344 108 23 4 2469
60 S 3 7 38 149 408 863 1441 1991 2335 2442 2465 2469 2469
Corn Growing Degree Days
50 M 68 98 222 385 564 715 815 788 622 408 210 88 4983
50 S 68 166 388 774 1338 2052 2868 3656 4278 4686 4896 4983 4983
Derived form the 1923-2012 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