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Period of Record General Climate Summary - Heating Degree Days

Station:(219173) WRIGHT 4 NW
From Year=1961 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	1776	1444	1199	724	383	146	54	88	293	638	1088	1588	9419
60	1621	1302	1045	576	249	62	12	29	178	487	938	1433	7931
57	1528	1218	952	489	179	31	4	12	123	400	848	1340	7122
55	1466	1161	890	433	139	18	1	6	92	344	788	1278	6616
50	1311	1020	737	299	62	3	0	0	38	220	639	1123	5452

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