MANCHESTER, NEW HAMPSHIRE

Period of Record General Climate Summary - Heating Degree Days

Station:(275072) MANCHESTER
From Year=1885 To Year=1999
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	1312	1158	1003	620	297	73	14	41	180	484	787	1181	7151
60	1157	1017	848	473	171	23	1	7	85	336	638	1026	5785
57	1064	932	755	388	111	9	0	2	48	256	549	933	5047
55	1002	876	694	332	78	4	0	0	30	206	489	871	4584
50	847	735	540	203	24	0	0	0	7	104	346	716	3523

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