WEAVERVILLE RANGER STN, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049490) WEAVERVILLE RANGER STN
From Year=1948 To Year=2005
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 29 79 175 309 559 749 983 941 741 463 158 33 5220
40 S 29 107 282 591 1151 1900 2884 3825 4566 5029 5186 5220 5220
45 M 4 20 77 185 408 599 828 786 591 315 62 7 3882
45 S 4 24 101 285 693 1293 2121 2907 3498 3813 3875 3882 3882
50 M 0 3 24 91 268 451 673 631 442 184 16 1 2784
50 S 0 3 27 118 386 836 1510 2141 2583 2767 2783 2784 2784
55 M 0 0 4 33 151 308 519 477 298 86 2 0 1878
55 S 0 0 4 37 188 497 1015 1492 1791 1876 1878 1878 1878
60 M 0 0 0 7 69 183 366 326 170 29 0 0 1150
60 S 0 0 0 7 76 259 626 951 1121 1150 1150 1150 1150
Corn Growing Degree Days
50 M 19 74 153 251 392 479 576 556 490 366 112 16 3486
50 S 19 94 247 498 891 1370 1946 2502 2993 3358 3471 3486 3486
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 Apr 5, 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