ALTA, UTAH

Period of Record General Climate Summary - Heating Degree Days

Station:(420072) ALTA
From Year=1905 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	1345	1195	1210	972	702	382	145	176	430	786	1107	1312	9762
60	1190	1054	1055	822	548	245	50	63	285	631	957	1157	8056
57	1097	969	962	732	456	176	22	29	207	538	867	1064	7120
55	1035	913	900	672	396	138	13	16	162	476	807	1002	6532
50	880	772	745	523	259	71	3	4	80	334	657	847	5175

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