OPTIMA LAKE, OKLAHOMA

Period of Record General Climate Summary - Heating Degree Days

Station:(346740) OPTIMA LAKE
From Year=1985 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	992	767	570	296	89	8	1	5	47	271	642	988	4676
60	837	626	424	180	38	1	0	1	19	162	497	833	3619
57	744	542	344	124	21	0	0	0	11	111	415	740	3052
55	682	487	295	95	14	0	0	0	7	84	363	679	2706
50	529	358	191	43	5	0	0	0	1	39	247	525	1940

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