BLACK ROCK, UTAH

Period of Record General Climate Summary - Heating Degree Days

Station:(420730) BLACK ROCK
From Year=1951 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	1143	887	741	498	259	70	3	8	134	460	821	1124	6145
60	988	745	587	351	140	24	0	1	58	310	671	969	4843
57	895	661	494	269	89	10	0	0	32	228	581	876	4135
55	833	604	433	219	63	5	0	0	21	180	521	814	3694
50	678	464	289	114	22	1	0	0	6	89	377	659	2699

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