CHESTER, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(041700) CHESTER
From Year=1948 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 2 10 47 142 347 559 771 730 536 286 46 4 3479
40 S 2 12 59 200 547 1106 1877 2607 3143 3429 3475 3479 3479
45 M 0 1 10 55 211 410 616 575 388 158 9 0 2434
45 S 0 1 10 66 277 687 1303 1878 2266 2424 2434 2434 2434
50 M 0 0 1 12 104 268 461 420 246 65 1 0 1578
50 S 0 0 1 12 117 385 846 1266 1512 1577 1578 1578 1578
55 M 0 0 0 1 38 145 308 269 123 18 0 0 902
55 S 0 0 0 1 39 184 492 761 884 902 902 902 902
60 M 0 0 0 0 8 58 167 134 38 2 0 0 408
60 S 0 0 0 0 8 67 234 368 406 408 408 408 408
Corn Growing Degree Days
50 M 6 24 68 149 277 395 522 507 414 263 59 9 2694
50 S 6 30 98 247 524 920 1442 1949 2363 2626 2685 2694 2694
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