LA MESA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(044735) LA MESA
From Year=1948 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 487 486 563 632 737 827 995 1039 966 851 635 512 8729
40 S 487 972 1536 2168 2905 3731 4727 5766 6732 7582 8217 8729 8729
45 M 333 345 408 482 582 677 840 884 816 696 485 358 6905
45 S 333 678 1086 1568 2150 2827 3667 4551 5367 6063 6548 6905 6905
50 M 189 208 255 332 427 527 685 729 666 541 335 210 5104
50 S 189 397 652 984 1411 1938 2623 3352 4018 4559 4894 5104 5104
55 M 77 92 119 188 273 377 530 574 516 387 192 88 3413
55 S 77 169 288 476 749 1126 1656 2230 2746 3132 3325 3413 3413
60 M 21 27 37 77 130 228 375 419 366 235 79 22 2016
60 S 21 47 84 161 291 520 895 1314 1680 1915 1994 2016 2016
Corn Growing Degree Days
50 M 269 269 303 352 427 517 669 704 634 529 369 288 5330
50 S 269 538 841 1192 1620 2137 2806 3510 4144 4673 5042 5330 5330
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 Jul 28, 2006
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