WILLITS 1 NE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(049684) WILLITS 1 NE
From Year=1960 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 145 191 259 322 489 639 813 790 671 507 252 134 5213
40 S 145 336 595 918 1407 2046 2858 3649 4320 4827 5079 5213 5213
45 M 48 85 130 186 336 489 658 635 521 353 126 45 3612
45 S 48 133 263 449 784 1273 1931 2566 3088 3441 3567 3612 3612
50 M 8 24 44 83 195 340 503 481 372 210 44 8 2311
50 S 8 31 76 159 353 693 1196 1676 2048 2258 2302 2311 2311
55 M 1 4 8 26 90 201 348 326 228 97 9 0 1339
55 S 1 5 13 39 130 330 678 1004 1232 1330 1339 1339 1339
60 M 0 0 1 4 32 95 202 180 108 28 0 0 649
60 S 0 0 1 5 37 131 333 513 621 649 649 649 649
Corn Growing Degree Days
50 M 92 121 166 218 323 407 514 510 459 369 164 83 3427
50 S 92 213 378 596 920 1327 1841 2351 2810 3179 3343 3427 3427
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