HOURGLASS RSVR, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(054135) HOURGLASS RESERVOIR
From Year=1988 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	1	0	6	26	135	369	591	519	299	100	14	1	2062
40 S	1	1	7	33	168	537	1128	1648	1947	2047	2061	2062	2062
45 M	0	0	0	5	55	234	437	366	172	37	2	0	1310
45 S	0	0	0	6	61	295	732	1098	1270	1308	1310	1310	1310
50 M	0	0	0	0	15	121	288	218	76	9	0	0	728
50 S	0	0	0	0	16	136	424	642	718	727	728	728	728
55 M	0	0	0	0	2	44	150	91	21	1	0	0	310
55 S	0	0	0	0	2	47	196	288	309	309	310	310	310
60 M	0	0	0	0	0	9	48	20	2	0	0	0	80
60 S	0	0	0	0	0	9	57	77	80	80	80	80	80

Corn Growing Degree Days
50 M	1	1	10	30	118	263	378	331	223	91	13	1	1461
50 S	1	2	12	42	161	424	802	1133	1356	1447	1460	1461	1461

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