HARTLEY 4 ESE, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(413981) HARTLEY 4 ESE
From Year=1893 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 37 17 139 437 724 898 1144 1005 791 430 95 26 5744
40 S 37 54 194 630 1355 2253 3397 4402 5194 5624 5718 5744 5744
45 M 11 4 79 306 571 748 989 850 642 283 31 5 4519
45 S 11 15 94 400 971 1719 2708 3558 4200 4483 4515 4519 4519
50 M 1 2 37 188 421 598 834 695 494 149 8 0 3428
50 S 1 3 40 228 649 1247 2081 2777 3271 3420 3428 3428 3428
55 M 0 0 12 93 282 448 679 540 349 54 1 0 2458
55 S 0 0 13 105 387 836 1515 2055 2404 2458 2458 2458 2458
60 M 0 0 3 36 168 305 524 385 218 7 0 0 1646
60 S 0 0 3 39 207 512 1036 1421 1639 1646 1646 1646 1646
Corn Growing Degree Days
50 M 70 39 143 306 463 590 687 651 542 336 138 30 3995
50 S 70 108 251 557 1020 1610 2297 2948 3491 3827 3964 3995 3995
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