COLFAX, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(041912) COLFAX
From Year=1948 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 163 207 290 432 658 888 1135 1091 914 666 318 175 6936
40 S 163 370 660 1091 1749 2638 3772 4863 5777 6443 6762 6936 6936
45 M 68 101 163 293 504 738 980 936 764 512 189 74 5321
45 S 68 169 332 625 1129 1868 2847 3783 4547 5059 5247 5321 5321
50 M 19 37 72 175 356 589 825 781 614 362 91 21 3943
50 S 19 57 129 304 661 1249 2074 2855 3469 3831 3922 3943 3943
55 M 3 9 24 87 226 441 670 626 466 228 33 4 2816
55 S 3 12 36 123 349 790 1459 2085 2551 2779 2812 2816 2816
60 M 0 1 6 33 123 302 515 471 323 119 8 0 1901
60 S 0 1 7 40 162 465 979 1450 1774 1892 1900 1901 1901
Corn Growing Degree Days
50 M 91 114 164 254 403 564 731 699 581 406 176 97 4280
50 S 91 205 369 623 1026 1591 2321 3021 3602 4008 4184 4280 4280
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