FRESNO WSO AP, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(043257) FRESNO WSO AP
From Year=1948 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
65 589 394 304 151 42 4 0 0 3 74 340 592 2492
60 435 255 168 64 10 0 0 0 0 23 201 437 1592
57 343 178 102 32 3 0 0 0 0 9 132 345 1144
55 284 132 67 18 1 0 0 0 0 4 93 286 886
50 152 46 17 2 0 0 0 0 0 1 29 152 399
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 Jul 28, 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