TRACY CARBONA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048999) TRACY CARBONA
From Year=1949 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 179 299 454 579 788 944 1096 1051 925 734 405 191 7645
40 S 179 477 931 1510 2298 3242 4338 5389 6315 7049 7454 7645 7645
45 M 74 166 300 429 633 794 941 896 775 579 259 82 5930
45 S 74 240 540 970 1602 2396 3337 4234 5009 5588 5848 5930 5930
50 M 21 64 159 283 478 644 786 741 625 425 134 23 4383
50 S 21 84 243 527 1004 1648 2435 3176 3801 4226 4360 4383 4383
55 M 3 14 58 154 325 494 631 586 475 273 47 3 3064
55 S 3 18 75 229 554 1048 1679 2266 2741 3014 3061 3064 3064
60 M 0 1 12 64 188 346 476 432 326 140 11 0 1995
60 S 0 1 13 77 265 611 1087 1519 1845 1984 1995 1995 1995
Corn Growing Degree Days
50 M 81 160 262 354 485 582 658 637 574 456 227 93 4569
50 S 81 240 502 856 1341 1924 2582 3219 3793 4249 4476 4569 4569
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