BROOKS FARNHAM RANCH, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(041112) BROOKS FARNHAM RANCH
From Year=1948 To Year=1985
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 162 253 368 498 772 954 1140 1091 948 693 370 191 7439
40 S 162 415 782 1280 2052 3005 4146 5237 6185 6878 7248 7439 7439
45 M 61 126 220 349 617 804 985 936 798 538 228 82 5744
45 S 61 187 407 757 1374 2177 3163 4099 4897 5434 5662 5744 5744
50 M 16 41 102 212 463 654 830 781 648 383 109 23 4262
50 S 16 57 159 371 834 1487 2318 3099 3747 4130 4239 4262 4262
55 M 3 7 31 102 314 504 675 626 498 237 36 5 3039
55 S 3 10 41 143 458 962 1637 2263 2762 2999 3035 3039 3039
60 M 0 1 5 35 185 358 520 471 350 119 8 1 2053
60 S 0 1 6 41 227 585 1105 1576 1926 2045 2053 2053 2053
Corn Growing Degree Days
50 M 96 158 232 329 485 576 663 637 572 451 229 106 4533
50 S 96 253 486 814 1299 1875 2538 3175 3747 4198 4427 4533 4533
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