WRAY, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(059243) WRAY
From Year=1893 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	17	37	128	316	611	889	1108	1047	737	395	100	20	5406
40 S	17	54	183	499	1110	1999	3107	4154	4892	5287	5386	5406	5406
45 M	4	11	62	199	461	739	953	892	589	263	41	4	4219
45 S	4	15	76	275	736	1475	2429	3321	3910	4173	4214	4219	4219
50 M	0	2	24	108	319	590	798	737	444	152	12	0	3187
50 S	0	2	26	134	453	1043	1841	2578	3022	3174	3186	3187	3187
55 M	0	0	7	47	196	442	643	582	307	71	2	0	2297
55 S	0	0	8	54	250	692	1335	1917	2224	2295	2297	2297	2297
60 M	0	0	2	15	100	301	489	428	188	24	0	0	1547
60 S	0	0	2	16	117	418	906	1335	1522	1547	1547	1547	1547

Corn Growing Degree Days
50 M	39	63	141	247	392	554	697	658	474	313	125	44	3747
50 S	39	102	243	490	882	1435	2132	2791	3265	3578	3703	3747	3747

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