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Period of Record General Climate Summary - Growing Degree Days

Station:(477092) REST LAKE
From Year=1913 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	0	16	119	415	663	820	750	477	203	23	1	3486
40 S	0	0	16	135	550	1213	2033	2783	3260	3462	3486	3486	3486
45 M	0	0	6	63	280	514	665	595	335	113	8	0	2580
45 S	0	0	6	69	349	863	1528	2123	2458	2572	2580	2580	2580
50 M	0	0	2	30	170	368	510	440	212	55	2	0	1790
50 S	0	0	2	32	202	570	1080	1521	1733	1788	1790	1790	1790
55 M	0	0	1	13	90	235	357	291	118	22	0	0	1126
55 S	0	0	1	13	103	338	695	987	1104	1126	1126	1126	1126
60 M	0	0	0	4	40	126	216	162	55	7	0	0	611
60 S	0	0	0	4	45	171	387	549	604	611	611	611	611

Corn Growing Degree Days
50 M	0	0	13	93	269	412	523	467	281	124	14	0	2197
50 S	0	0	14	106	375	788	1310	1777	2059	2183	2196	2197	2197

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