GRAND FORKS INTL AP, NORTH DAKOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(323616) GRAND FORKS FAA AP
From Year=1948 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	1878	1541	1275	706	338	99	27	53	269	641	1149	1666	9642
60	1723	1400	1120	560	216	37	5	15	158	491	999	1511	8234
57	1630	1315	1027	474	156	17	1	5	106	405	909	1418	7462
55	1568	1258	965	418	122	9	0	2	78	349	849	1356	6975
50	1413	1117	811	288	58	2	0	0	31	224	699	1201	5844

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