CHATTANOOGA WB CITY, TENNESSEE

Period of Record General Climate Summary - Growing Degree Days

From Year=1927 To Year=1950
Station:(401661) CHATTANOOGA WB CITY
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 186 190 381 625 906 1106 1223 1194 1000 701 338 163 8013
40 S 186 376 757 1382 2289 3394 4618 5812 6811 7512 7851 8013 8013
45 M 106 105 254 477 751 956 1068 1039 850 547 217 82 6451
45 S 106 211 465 942 1694 2649 3718 4756 5606 6153 6369 6451 6451
50 M 54 51 153 336 597 806 913 884 700 396 122 35 5045
50 S 54 105 257 594 1190 1996 2909 3793 4493 4889 5011 5045 5045
55 M 24 22 80 209 443 656 758 729 550 256 59 13 3798
55 S 24 46 126 335 778 1433 2192 2921 3471 3726 3785 3798 3798
60 M 8 8 34 106 295 506 603 574 403 138 23 3 2700
60 S 8 15 49 155 450 956 1559 2133 2535 2674 2697 2700 2700
Corn Growing Degree Days
50 M 93 101 221 376 594 754 845 825 676 437 191 82 5194
50 S 93 194 415 791 1384 2138 2984 3809 4484 4922 5113 5194 5194
Derived form the 1927-1950 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