CALLAO, UTAH

Period of Record General Climate Summary - Heating Degree Days

Station:(421144) CALLAO
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	1179	903	727	492	257	78	4	11	140	474	827	1157	6249
60	1024	762	573	349	146	31	1	3	65	328	677	1002	4961
57	931	677	481	270	96	14	0	1	38	248	587	909	4254
55	870	620	422	221	69	7	0	1	25	200	528	847	3811
50	715	481	281	121	25	1	0	0	8	101	384	693	2809

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