TRONA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049035) TRONA
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 211 339 546 742 1031 1279 1537 1485 1221 901 463 202 9956
40 S 211 550 1096 1838 2870 4148 5685 7170 8390 9291 9755 9956 9956
45 M 101 209 393 593 876 1129 1382 1330 1071 746 319 89 8237
45 S 101 310 703 1296 2172 3301 4682 6012 7083 7829 8148 8237 8237
50 M 35 103 249 445 721 979 1227 1175 921 592 192 27 6664
50 S 35 138 387 832 1554 2532 3759 4934 5854 6446 6637 6664 6664
55 M 8 37 131 306 567 829 1072 1020 771 439 93 5 5277
55 S 8 45 176 482 1049 1878 2949 3969 4739 5178 5272 5277 5277
60 M 1 10 51 184 417 679 917 865 621 293 32 1 4070
60 S 1 11 63 247 664 1343 2259 3124 3745 4038 4070 4070 4070
Corn Growing Degree Days
50 M 137 217 338 465 654 791 935 915 766 573 295 135 6220
50 S 137 354 692 1156 1810 2601 3536 4450 5216 5789 6085 6220 6220
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