ALTA, UTAH

Period of Record General Climate Summary - Heating Degree Days

Station:(420072) ALTA
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	1344	1191	1213	976	698	384	156	183	435	778	1108	1309	9775
60	1189	1049	1058	826	544	246	55	67	290	623	958	1154	8060
57	1096	965	965	736	452	177	26	31	212	530	868	1061	7119
55	1034	908	903	676	392	139	15	17	168	469	808	999	6529
50	879	767	748	527	255	71	4	3	85	327	659	844	5169

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