OKOLONA, MISSISSIPPI

Period of Record General Climate Summary - Growing Degree Days

From Year=1893 To Year=1986
Station:(226515) OKOLONA
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 188 203 455 645 970 1177 1294 1282 1096 748 392 203 8651
40 S 188 391 846 1490 2460 3637 4931 6212 7309 8056 8448 8651 8651
45 M 103 119 321 497 815 1027 1139 1127 946 594 263 111 7062
45 S 103 222 543 1040 1855 2882 4021 5148 6094 6688 6951 7062 7062
50 M 49 62 205 357 660 877 984 972 796 445 156 53 5615
50 S 49 110 315 672 1332 2209 3193 4164 4961 5406 5562 5615 5615
55 M 20 27 116 231 507 727 829 817 647 307 76 21 4323
55 S 20 47 162 393 900 1627 2455 3272 3919 4226 4302 4323 4323
60 M 6 9 56 128 360 577 674 662 500 187 28 6 3192
60 S 6 15 71 198 558 1135 1809 2470 2970 3157 3186 3192 3192
Corn Growing Degree Days
50 M 115 126 283 399 638 782 868 854 721 491 261 127 5664
50 S 115 241 524 923 1561 2343 3211 4064 4785 5276 5537 5664 5664
Derived form the 1893-1986 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