TROPIC, UTAH

Period of Record General Climate Summary - Heating Degree Days

Station:(428847) TROPIC
From Year=1893 To Year=1999
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1142	941	833	593	363	130	30	46	196	485	817	1079	6655
60	987	800	678	443	221	51	11	9	89	333	667	924	5215
57	894	715	585	355	150	25	8	2	49	248	577	831	4441
55	832	658	524	299	111	14	7	1	31	196	518	769	3960
50	677	518	371	175	44	3	5	0	9	94	370	614	2879

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