GACKLE, NORTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(323309) GACKLE
From Year=1948 To Year=2002
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	0	1	17	167	496	755	952	911	554	241	22	0	4118
40 S	0	1	18	186	682	1437	2389	3300	3855	4096	4118	4118	4118
45 M	0	0	5	93	353	605	797	756	411	140	8	0	3169
45 S	0	0	5	99	452	1057	1854	2610	3021	3161	3169	3169	3169
50 M	0	0	1	46	227	456	642	601	279	69	2	0	2324
50 S	0	0	1	48	274	731	1373	1974	2253	2322	2324	2324	2324
55 M	0	0	0	21	127	313	487	448	167	28	0	0	1591
55 S	0	0	0	21	148	460	948	1395	1563	1591	1591	1591	1591
60 M	0	0	0	7	59	185	336	300	87	9	0	0	982
60 S	0	0	0	7	66	251	586	886	974	982	982	982	982

Corn Growing Degree Days
50 M	0	1	15	119	307	470	618	583	340	160	19	0	2633
50 S	0	1	17	136	443	912	1530	2113	2453	2613	2633	2633	2633

M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
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