DUNLAP, TENNESSEE

Period of Record General Climate Summary - Growing Degree Days

From Year=1909 To Year=1962
Station:(402657) DUNLAP
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 146 151 378 573 858 1043 1156 1146 971 659 279 117 7476
40 S 146 297 675 1249 2106 3149 4305 5450 6421 7080 7359 7476 7476
45 M 75 83 253 427 703 893 1001 991 821 507 169 59 5981
45 S 75 158 412 838 1541 2434 3434 4425 5246 5753 5922 5981 5981
50 M 32 39 149 287 548 743 846 836 671 364 85 23 4622
50 S 32 72 221 508 1056 1798 2644 3480 4150 4514 4599 4622 4622
55 M 11 12 75 169 398 593 691 681 521 235 35 8 3429
55 S 11 23 98 267 666 1258 1949 2630 3151 3385 3420 3429 3429
60 M 1 2 26 79 259 443 536 526 376 130 9 2 2388
60 S 1 3 30 109 368 810 1346 1872 2247 2377 2386 2388 2388
Corn Growing Degree Days
50 M 90 99 252 367 557 686 779 771 642 435 209 68 4956
50 S 90 189 441 808 1366 2052 2831 3602 4244 4679 4887 4956 4956
Derived form the 1909-1962 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