ONTARIO KSRV, OREGON

Period of Record General Climate Summary - Heating Degree Days

Station:(356294) ONTARIO KSRV
From Year=1903 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1149	861	668	421	193	55	3	10	110	439	803	1101	5814
60	994	720	514	279	95	17	0	2	44	292	653	946	4556
57	901	635	421	202	55	6	0	0	23	212	564	853	3872
55	839	578	360	156	36	3	0	0	14	165	504	791	3445
50	684	437	217	66	9	0	0	0	2	72	357	636	2481

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