SAN JACINTO RS, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(047813) SAN JACINTO RANGER STN
From Year=1948 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 387 386 513 647 840 986 1201 1240 1069 840 530 363 9001
40 S 387 773 1285 1932 2772 3758 4959 6199 7268 8109 8638 9001 9001
45 M 238 248 358 497 685 836 1046 1085 919 685 381 216 7195
45 S 238 486 845 1342 2027 2863 3909 4994 5913 6599 6979 7195 7195
50 M 114 128 212 351 530 686 891 930 769 530 241 97 5480
50 S 114 242 455 806 1336 2022 2913 3843 4612 5142 5383 5480 5480
55 M 39 49 97 217 377 536 736 775 619 377 125 29 3975
55 S 39 87 185 402 779 1314 2051 2826 3445 3821 3946 3975 3975
60 M 7 11 31 109 235 386 581 620 469 233 46 5 2733
60 S 7 18 49 158 393 779 1360 1980 2449 2682 2728 2733 2733
Corn Growing Degree Days
50 M 265 251 320 399 509 594 719 734 642 515 353 267 5570
50 S 265 517 837 1236 1745 2339 3058 3792 4434 4949 5302 5570 5570
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