RAINBOW RSVR TOMAHAWK, WISCONSIN

Period of Record General Climate Summary - Heating Degree Days

Station:(476939) RAINBOW RESERVOIR
From Year=1946 To Year=1996
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1701	1450	1266	775	402	155	65	97	315	622	1069	1524	9440
60	1546	1309	1111	627	271	71	18	33	194	472	919	1369	7940
57	1453	1224	1018	540	203	40	6	13	134	387	829	1276	7123
55	1391	1167	956	484	163	25	2	6	100	333	769	1214	6611
50	1236	1026	801	349	83	6	0	1	41	211	621	1059	5434

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