TATOOSH ISLAND WB, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458332) TATOOSH ISLAND WB
From Year=1931 To Year=1966
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	713	616	648	531	439	338	295	285	308	405	535	645	5758
60	558	475	493	381	284	189	143	132	160	251	385	490	3940
57	465	390	400	291	193	104	61	51	79	160	295	397	2886
55	404	334	338	232	134	54	22	16	39	104	236	335	2246
50	250	194	186	94	23	1	0	0	1	16	99	183	1047

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