HAYFORK, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(043859) HAYFORK RANGER STN
From Year=1914 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 830 667 598 460 291 125 17 25 140 368 597 816 4934
60 675 525 443 313 164 49 2 4 58 223 447 661 3564
57 582 441 350 229 105 24 1 2 29 147 358 568 2835
55 520 384 290 179 73 15 0 1 16 104 298 506 2386
50 366 245 155 83 22 4 0 0 3 33 161 352 1423
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