AMARILLO INTL AP, TEXAS

Period of Record General Climate Summary - Growing Degree Days

Station:(410211) AMARILLO WB AIRPORT
From Year=1948 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 78 120 274 504 795 1044 1198 1145 885 582 231 87 6941
40 S 78 198 472 976 1770 2814 4012 5157 6042 6624 6854 6941 6941
45 M 31 58 167 365 641 894 1043 990 735 434 134 35 5527
45 S 31 89 256 621 1262 2156 3198 4188 4924 5357 5492 5527 5527
50 M 9 22 88 239 488 744 888 835 587 295 64 10 4268
50 S 9 31 118 357 845 1589 2476 3312 3898 4194 4258 4268 4268
55 M 1 6 38 135 342 594 733 680 440 177 22 2 3169
55 S 1 7 45 180 522 1115 1848 2528 2969 3145 3168 3169 3169
60 M 0 1 12 62 212 445 578 526 301 88 5 0 2229
60 S 0 1 13 75 287 732 1310 1836 2136 2224 2229 2229 2229
Corn Growing Degree Days
50 M 87 112 210 329 493 676 789 757 567 365 172 90 4649
50 S 87 199 409 738 1231 1907 2697 3454 4021 4386 4558 4649 4649
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