BOCA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(040931) BOCA
From Year=1906 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 1 3 21 87 252 427 637 588 401 187 33 4 2643
40 S 1 5 26 113 365 792 1429 2017 2418 2605 2638 2643 2643
45 M 0 0 3 28 133 283 482 433 258 82 5 0 1708
45 S 0 0 3 31 164 447 930 1363 1621 1703 1708 1708 1708
50 M 0 0 0 5 53 157 328 281 133 22 0 0 979
50 S 0 0 0 5 58 214 543 824 956 979 979 979 979
55 M 0 0 0 0 12 64 184 143 45 3 0 0 450
55 S 0 0 0 0 13 76 260 403 448 450 450 450 450
60 M 0 0 0 0 1 15 73 48 7 0 0 0 144
60 S 0 0 0 0 1 17 89 137 143 144 144 144 144
Corn Growing Degree Days
50 M 10 20 55 128 246 359 501 488 394 248 79 17 2544
50 S 10 30 84 212 458 817 1318 1806 2200 2448 2527 2544 2544
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