HANNAH 2 N, NORTH DAKOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(323936) HANNAH
From Year=1905 To Year=1985
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	2017	1681	1410	817	438	165	61	103	340	710	1259	1773	10773
60	1862	1539	1255	668	303	77	17	40	218	558	1109	1618	9264
57	1769	1455	1162	580	231	43	7	19	157	470	1019	1525	8436
55	1707	1398	1100	523	188	27	3	11	122	413	959	1463	7914
50	1552	1257	945	385	101	8	0	1	58	284	809	1308	6709

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