SHEYENNE, NORTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(328057) SHEYENNE
From Year=1893 To Year=1984
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	0	9	148	477	722	917	844	506	188	20	0	3832
40 S	0	0	9	157	634	1357	2274	3118	3624	3812	3832	3832	3832
45 M	0	0	2	79	337	572	762	689	365	100	7	0	2914
45 S	0	0	2	81	418	990	1753	2442	2807	2907	2914	2914	2914
50 M	0	0	0	38	213	425	607	534	241	44	2	0	2103
50 S	0	0	0	38	251	676	1283	1817	2058	2102	2103	2103	2103
55 M	0	0	0	15	117	283	453	381	140	16	0	0	1405
55 S	0	0	0	15	132	415	868	1249	1389	1405	1405	1405	1405
60 M	0	0	0	5	55	161	301	241	70	4	0	0	836
60 S	0	0	0	5	59	220	522	762	832	836	836	836	836

Corn Growing Degree Days
50 M	0	0	8	113	312	451	592	538	321	132	18	0	2487
50 S	0	0	9	122	434	885	1477	2015	2337	2468	2486	2487	2487

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