WILLOWS 6 W, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049699) WILLOWS 6 W
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 172 277 414 562 811 994 1161 1106 976 757 393 191 7812
40 S 172 449 863 1424 2235 3229 4390 5495 6471 7228 7621 7812 7812
45 M 69 149 264 412 656 844 1006 951 826 602 248 80 6105
45 S 69 218 481 893 1549 2393 3399 4349 5175 5777 6025 6105 6105
50 M 18 55 135 270 501 694 851 796 676 447 126 21 4589
50 S 18 73 208 478 979 1673 2524 3319 3995 4443 4569 4589 4589
55 M 3 12 51 149 350 544 696 641 526 297 47 4 3320
55 S 3 15 66 215 565 1109 1805 2445 2971 3269 3316 3320 3320
60 M 0 1 12 63 215 396 541 486 377 166 12 1 2271
60 S 0 2 14 77 293 689 1229 1715 2092 2258 2270 2271 2271
Corn Growing Degree Days
50 M 87 154 245 350 502 622 719 685 605 469 230 103 4770
50 S 87 241 486 836 1338 1960 2679 3364 3968 4437 4667 4770 4770
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