WILLITS 1 NE, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(049684) WILLITS 1 NE
From Year=1902 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 656 533 534 433 295 149 52 55 113 280 502 675 4278
60 501 392 380 288 165 58 9 9 38 147 353 520 2861
57 409 309 291 208 102 27 2 2 16 88 266 427 2144
55 347 255 233 160 68 14 0 1 7 58 212 365 1720
50 198 133 111 67 17 2 0 0 1 14 99 218 859
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
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