BOCA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(040931) BOCA
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 2 4 22 87 251 431 637 591 399 190 34 4 2652
40 S 2 5 28 115 366 797 1434 2025 2424 2614 2647 2652 2652
45 M 0 0 3 28 134 287 483 436 256 84 5 0 1717
45 S 0 0 3 31 165 452 935 1371 1627 1712 1717 1717 1717
50 M 0 0 0 5 54 161 329 284 132 24 0 0 988
50 S 0 0 0 5 59 220 549 833 964 988 988 988 988
55 M 0 0 0 0 13 67 185 146 44 3 0 0 459
55 S 0 0 0 0 13 80 265 412 456 459 459 459 459
60 M 0 0 0 0 1 17 75 50 7 0 0 0 151
60 S 0 0 0 0 1 18 93 144 151 151 151 151 151
Corn Growing Degree Days
50 M 10 21 55 129 244 362 501 487 390 257 80 17 2554
50 S 10 31 86 215 460 821 1322 1809 2200 2457 2537 2554 2554
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