TRONA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049035) TRONA
From Year=1920 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 194 324 543 741 1036 1268 1532 1476 1207 876 445 196 9839
40 S 194 518 1061 1802 2838 4106 5638 7114 8321 9197 9643 9839 9839
45 M 87 195 390 591 881 1118 1377 1321 1057 721 301 85 8124
45 S 87 282 672 1263 2144 3262 4638 5959 7017 7738 8039 8124 8124
50 M 28 91 246 443 726 968 1222 1166 907 567 173 25 6562
50 S 28 119 365 808 1534 2502 3723 4889 5797 6363 6537 6562 6562
55 M 6 30 127 302 572 818 1067 1011 757 414 80 5 5189
55 S 6 36 163 465 1037 1855 2921 3932 4690 5104 5184 5189 5189
60 M 1 7 49 180 421 668 912 856 607 270 26 1 3997
60 S 1 8 56 236 657 1325 2236 3092 3700 3970 3996 3997 3997
Corn Growing Degree Days
50 M 137 212 343 465 651 775 921 897 747 557 295 136 6137
50 S 137 349 692 1157 1808 2583 3504 4401 5148 5705 6000 6137 6137
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