LAMAR, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(054770) LAMAR
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	20	53	186	410	712	993	1191	1133	837	468	125	22	6149
40 S	20	72	258	668	1379	2373	3564	4697	5534	6001	6127	6149	6149
45 M	4	18	99	278	559	844	1036	978	688	326	55	5	4889
45 S	4	22	122	400	959	1802	2838	3816	4504	4830	4885	4889	4889
50 M	1	4	43	166	410	694	881	823	541	201	17	1	3780
50 S	1	5	48	213	624	1317	2199	3021	3562	3763	3779	3780	3780
55 M	0	1	14	81	272	545	726	668	397	103	3	0	2810
55 S	0	1	15	96	369	913	1639	2307	2705	2808	2810	2810	2810
60 M	0	0	4	30	156	398	571	513	264	42	0	0	1978
60 S	0	0	4	34	190	588	1159	1672	1936	1978	1978	1978	1978

Corn Growing Degree Days
50 M	54	89	188	302	449	619	745	711	527	350	151	56	4240
50 S	54	143	331	632	1081	1700	2445	3156	3683	4033	4184	4240	4240

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