WINTERS, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049742) WINTERS
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 196 318 479 627 862 1030 1183 1146 1009 792 432 218 8291
40 S 196 514 992 1620 2482 3512 4695 5841 6850 7642 8073 8291 8291
45 M 81 183 325 478 707 880 1028 991 859 637 285 97 6551
45 S 81 264 589 1067 1774 2654 3682 4673 5532 6169 6453 6551 6551
50 M 21 76 185 331 552 730 873 836 709 482 154 26 4975
50 S 21 97 282 613 1165 1895 2769 3604 4313 4795 4949 4975 4975
55 M 3 19 80 199 399 580 718 681 559 330 61 4 3632
55 S 3 22 101 300 699 1279 1998 2679 3237 3567 3628 3632 3632
60 M 0 2 24 97 256 431 563 526 409 191 16 0 2515
60 S 0 2 26 123 379 810 1373 1899 2308 2499 2515 2515 2515
Corn Growing Degree Days
50 M 91 167 270 379 530 635 706 689 620 490 248 108 4933
50 S 91 258 528 907 1437 2072 2777 3467 4086 4577 4825 4933 4933
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