JAMESTOWN STATE HOSP, NORTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(324418) JAMESTOWN ST HOSPITAL
From Year=1881 To Year=2012
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	18	163	471	737	942	877	536	228	21	1	3994
40 S	0	1	20	182	653	1390	2332	3209	3745	3973	3994	3994	3994
45 M	0	0	6	88	330	587	787	722	394	129	6	0	3050
45 S	0	0	6	94	424	1012	1799	2521	2914	3044	3050	3050	3050
50 M	0	0	2	43	208	439	632	567	264	62	1	0	2218
50 S	0	0	2	44	252	691	1323	1890	2155	2217	2218	2218	2218
55 M	0	0	0	17	114	298	477	414	158	24	0	0	1503
55 S	0	0	0	18	132	430	907	1320	1478	1502	1503	1503	1503
60 M	0	0	0	5	53	174	325	269	81	7	0	0	914
60 S	0	0	0	5	58	232	557	826	907	914	914	914	914

Corn Growing Degree Days
50 M	0	1	17	119	295	457	607	558	336	157	22	1	2570
50 S	0	1	19	138	433	890	1497	2055	2390	2548	2569	2570	2570

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