SAN LUIS DAM, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(047846) SAN LUIS DAM
From Year=1963 To Year=2005
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 588 391 288 172 66 15 1 1 4 61 310 577 2475
60 433 251 151 74 17 2 0 0 0 15 175 422 1542
57 342 172 87 36 4 0 0 0 0 5 111 331 1088
55 282 125 54 20 2 0 0 0 0 2 77 272 834
50 147 41 11 3 0 0 0 0 0 0 23 140 365
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 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