FOREST GLEN, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(043130) FOREST GLEN
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 22 59 131 254 477 687 898 867 681 401 107 30 4613
40 S 22 81 213 467 943 1631 2528 3395 4075 4476 4583 4613 4613
45 M 3 12 46 137 328 537 743 712 531 254 32 5 3339
45 S 3 15 61 198 526 1063 1806 2517 3048 3302 3334 3339 3339
50 M 0 1 9 55 196 390 588 557 382 133 5 0 2315
50 S 0 1 10 65 261 651 1239 1795 2177 2310 2315 2315 2315
55 M 0 0 1 15 95 252 433 403 241 54 0 0 1494
55 S 0 0 1 16 111 363 796 1199 1440 1494 1494 1494 1494
60 M 0 0 0 2 34 136 282 254 122 15 0 0 845
60 S 0 0 0 2 36 172 454 708 831 845 845 845 845
Corn Growing Degree Days
50 M 11 53 116 209 349 453 549 537 469 308 71 11 3136
50 S 11 63 179 388 737 1190 1739 2276 2745 3054 3124 3136 3136
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