FAIRFIELD, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042934) FAIRFIELD
From Year=1950 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 207 321 456 557 750 876 1009 1006 915 747 419 224 7488
40 S 207 528 985 1541 2291 3167 4176 5183 6097 6844 7264 7488 7488
45 M 88 185 302 407 595 726 854 851 765 592 273 102 5740
45 S 88 273 575 982 1577 2302 3157 4008 4773 5365 5638 5740 5740
50 M 23 73 161 260 440 576 699 696 615 437 143 28 4152
50 S 23 96 257 518 958 1533 2233 2929 3543 3981 4124 4152 4152
55 M 3 16 61 134 288 426 544 541 465 285 52 4 2819
55 S 3 19 80 213 501 926 1471 2012 2477 2762 2815 2819 2819
60 M 0 2 14 51 153 278 390 386 315 150 11 0 1749
60 S 0 2 16 66 220 498 887 1273 1589 1739 1749 1749 1749
Corn Growing Degree Days
50 M 94 168 253 325 449 534 623 623 565 457 236 107 4434
50 S 94 262 515 840 1289 1823 2446 3070 3635 4092 4328 4434 4434
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