GRANDFALLS 3 SSE, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(413680) GRANDFALLS 3 SSE
From Year=1909 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 185 274 527 767 1039 1251 1349 1306 1062 794 411 200 9164
40 S 185 459 986 1753 2792 4043 5392 6697 7759 8553 8964 9164 9164
45 M 94 165 384 619 884 1101 1194 1151 912 640 280 101 7523
45 S 94 258 642 1261 2145 3246 4440 5590 6502 7142 7422 7523 7523
50 M 37 82 252 473 729 951 1039 996 762 488 168 40 6016
50 S 37 119 371 845 1573 2524 3563 4559 5320 5809 5977 6016 6016
55 M 10 32 143 334 574 801 884 841 613 342 83 10 4667
55 S 10 42 185 519 1094 1895 2778 3619 4232 4574 4657 4667 4667
60 M 2 8 64 208 423 651 729 686 466 210 31 1 3478
60 S 2 10 74 282 705 1356 2085 2770 3236 3446 3477 3478 3478
Corn Growing Degree Days
50 M 195 240 385 496 646 784 852 829 679 514 317 200 6138
50 S 195 436 820 1317 1962 2746 3598 4427 5106 5621 5938 6138 6138
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