LAMAR RANGER STN, WYOMING

Period of Record General Climate Summary - Growing Degree Days

Station:(485355) LAMAR RANGER STN
From Year=1881 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	0	0	1	23	151	328	535	479	236	67	1	0	1819
40 S	0	0	1	24	175	502	1037	1516	1752	1818	1819	1819	1819
45 M	0	0	0	4	57	191	380	326	118	18	0	0	1095
45 S	0	0	0	4	61	252	632	958	1076	1095	1095	1095	1095
50 M	0	0	0	0	12	81	228	179	40	2	0	0	543
50 S	0	0	0	0	12	93	322	501	541	543	543	543	543
55 M	0	0	0	0	1	19	94	63	7	0	0	0	184
55 S	0	0	0	0	1	20	114	177	184	184	184	184	184
60 M	0	0	0	0	0	2	20	12	1	0	0	0	34
60 S	0	0	0	0	0	2	22	33	34	34	34	34	34

Corn Growing Degree Days
50 M	0	0	4	47	176	277	436	413	270	126	8	0	1756
50 S	0	0	4	51	227	504	940	1352	1622	1748	1756	1756	1756

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