BILLY CREEK, WYOMING

Period of Record General Climate Summary - Growing Degree Days

Station:(480740) BILLY CREEK
From Year=1962 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	9	16	56	157	372	627	891	841	516	235	55	15	3789
40 S	9	25	81	239	611	1238	2129	2969	3485	3720	3775	3789	3789
45 M	2	4	21	82	242	479	736	686	378	135	21	4	2789
45 S	2	6	27	109	351	830	1565	2251	2629	2764	2785	2789	2789
50 M	0	0	6	35	136	335	581	532	253	65	6	1	1950
50 S	0	1	6	41	178	513	1094	1626	1879	1944	1949	1950	1950
55 M	0	0	1	11	63	208	428	381	148	24	1	0	1266
55 S	0	0	1	12	75	283	711	1093	1241	1265	1266	1266	1266
60 M	0	0	0	2	21	108	281	242	71	6	0	0	733
60 S	0	0	0	2	24	132	413	655	726	733	733	733	733

Corn Growing Degree Days
50 M	13	20	57	128	243	386	559	530	343	187	56	20	2541
50 S	13	33	90	218	461	847	1406	1936	2279	2466	2522	2541	2541

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 Jul 28, 2006
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