CLEARLAKE 4 SE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(041806) CLEARLAKE 4 SE
From Year=1954 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 113 166 268 393 627 842 1042 1006 816 580 265 125 6243
40 S 113 279 547 940 1567 2408 3450 4456 5272 5852 6118 6243 6243
45 M 34 66 137 251 472 692 887 851 666 426 137 41 4659
45 S 34 100 237 488 960 1652 2539 3390 4056 4482 4618 4659 4659
50 M 6 17 50 133 322 542 732 696 516 277 50 8 3349
50 S 6 22 72 206 528 1070 1802 2498 3013 3290 3340 3349 3349
55 M 0 1 11 53 189 394 577 541 367 148 11 1 2293
55 S 0 2 13 66 254 649 1226 1767 2134 2281 2292 2293 2293
60 M 0 0 1 12 89 253 422 387 226 57 1 0 1449
60 S 0 0 1 13 102 355 777 1164 1390 1448 1449 1449 1449
Corn Growing Degree Days
50 M 84 120 183 267 400 515 619 594 507 396 190 90 3966
50 S 84 205 388 655 1054 1569 2188 2783 3290 3686 3876 3966 3966
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