SHIRLEY BASIN, WYOMING

Period of Record General Climate Summary - Growing Degree Days

Station:(488192) SHIRLEY BASIN STN
From Year=1978 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	7	58	208	459	695	634	337	87	8	0	2494
40 S	0	0	7	65	274	732	1427	2061	2399	2485	2493	2494	2494
45 M	0	0	1	19	108	316	540	479	210	30	1	0	1705
45 S	0	0	1	19	128	444	984	1463	1673	1703	1705	1705	1705
50 M	0	0	0	4	43	189	386	326	106	6	0	0	1061
50 S	0	0	0	4	47	236	622	948	1055	1061	1061	1061	1061
55 M	0	0	0	0	10	91	237	182	40	1	0	0	560
55 S	0	0	0	0	10	101	338	520	560	560	560	560	560
60 M	0	0	0	0	1	31	106	68	9	0	0	0	215
60 S	0	0	0	0	1	31	138	205	215	215	215	215	215

Corn Growing Degree Days
50 M	0	0	13	67	173	329	468	440	280	109	11	0	1891
50 S	0	0	13	80	254	582	1051	1491	1771	1880	1891	1891	1891

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