SPICER, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(057848) SPICER
From Year=1909 To Year=2003
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	4	34	171	377	574	515	294	82	4	0	2055
40 S	0	1	4	38	209	586	1160	1675	1969	2051	2055	2055	2055
45 M	0	0	1	8	74	236	419	361	164	24	0	0	1287
45 S	0	0	1	9	83	319	738	1099	1263	1287	1287	1287	1287
50 M	0	0	0	1	19	115	265	210	64	3	0	0	678
50 S	0	0	0	1	20	136	401	611	675	678	678	678	678
55 M	0	0	0	0	2	36	122	80	14	0	0	0	253
55 S	0	0	0	0	2	38	159	240	253	253	253	253	253
60 M	0	0	0	0	0	5	28	13	2	0	0	0	49
60 S	0	0	0	0	0	6	34	47	49	49	49	49	49

Corn Growing Degree Days
50 M	0	1	5	47	161	296	412	377	258	112	11	1	1681
50 S	0	1	6	53	214	510	922	1299	1558	1669	1680	1681	1681

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