OPTIMA LAKE, OKLAHOMA

Period of Record General Climate Summary - Growing Degree Days

Station:(346740) OPTIMA LAKE
From Year=1985 To Year=1994
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 41 105 274 482 788 1035 1195 1146 873 537 197 40 6713
40 S 41 146 419 902 1690 2725 3919 5066 5938 6476 6673 6713 6713
45 M 12 47 169 343 634 885 1040 991 723 391 115 12 5362
45 S 12 59 228 571 1205 2090 3130 4121 4844 5235 5350 5362 5362
50 M 2 15 88 221 483 735 885 836 574 258 56 2 4155
50 S 2 17 105 326 810 1545 2429 3265 3840 4097 4153 4155 4155
55 M 0 3 38 123 337 585 730 681 430 147 21 1 3095
55 S 0 3 41 163 501 1086 1815 2497 2927 3074 3095 3095 3095
60 M 0 0 11 58 206 436 575 527 292 70 5 0 2182
60 S 0 0 12 70 276 712 1287 1814 2106 2176 2182 2182 2182
Corn Growing Degree Days
50 M 63 107 223 326 490 664 766 735 557 362 173 60 4524
50 S 63 169 392 718 1208 1872 2638 3372 3930 4292 4464 4524 4524
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 Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu