ECHO SUMT SIER TAHOE, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(042671) ECHO SUMMIT SIERRA SKI
From Year=1944 To Year=1994
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1085	976	1029	831	653	383	188	184	328	619	926	1080	8284
60	930	835	874	681	499	247	83	77	199	468	776	925	6594
57	837	750	781	591	407	179	45	38	139	382	686	832	5668
55	775	694	719	531	349	139	28	22	107	329	626	770	5088
50	620	553	564	384	220	66	7	5	53	209	477	615	3772

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