SONORA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048353) SONORA RS
From Year=1903 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 148 197 320 454 679 883 1134 1090 892 638 327 166 6928
40 S 148 345 665 1119 1798 2681 3815 4905 5798 6436 6763 6928 6928
45 M 52 89 184 310 525 733 979 935 742 484 191 66 5289
45 S 52 141 325 634 1159 1892 2871 3806 4549 5033 5224 5289 5289
50 M 8 26 82 183 374 583 824 780 592 334 85 15 3886
50 S 8 34 115 298 672 1255 2079 2859 3452 3786 3871 3886 3886
55 M 0 4 23 85 236 435 669 625 443 197 25 2 2745
55 S 0 4 28 113 349 783 1453 2078 2521 2718 2744 2745 2745
60 M 0 0 3 28 124 292 514 470 299 91 4 0 1825
60 S 0 0 3 30 154 446 961 1431 1731 1822 1825 1825 1825
Corn Growing Degree Days
50 M 87 118 197 281 428 549 691 666 553 405 206 100 4279
50 S 87 204 401 682 1110 1658 2349 3015 3568 3973 4179 4279 4279
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