WILLITS 1 NE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049684) WILLITS 1 NE
From Year=1902 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 141 185 247 320 487 637 812 793 669 499 253 129 5173
40 S 141 327 574 894 1381 2018 2829 3622 4292 4790 5044 5173 5173
45 M 45 82 123 186 334 487 657 638 519 345 128 43 3587
45 S 45 127 250 436 770 1256 1913 2551 3070 3416 3544 3587 3587
50 M 7 24 42 85 194 338 502 483 370 203 47 8 2302
50 S 7 30 73 157 351 690 1191 1674 2044 2247 2294 2302 2302
55 M 0 5 9 28 90 200 347 328 227 92 9 0 1336
55 S 0 5 14 42 132 332 679 1008 1235 1327 1336 1336 1336
60 M 0 0 1 6 32 95 201 182 107 26 1 0 651
60 S 0 0 1 7 39 134 335 517 625 651 651 651 651
Corn Growing Degree Days
50 M 92 121 158 220 324 408 516 511 459 361 163 81 3415
50 S 92 213 371 591 915 1322 1838 2349 2809 3170 3333 3415 3415
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 Oct 31, 2012
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