BOULDER CITY, NEVADA

Period of Record General Climate Summary - Growing Degree Days

Station:(261071) BOULDER CITY
From Year=1931 To Year=2004
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	222	319	537	755	1052	1295	1523	1471	1224	905	469	247	10018
40 S	222	541	1078	1834	2885	4180	5703	7174	8398	9303	9771	10018	10018
45 M	106	194	385	606	897	1145	1368	1316	1074	750	323	123	8286
45 S	106	300	685	1291	2188	3332	4701	6016	7090	7840	8164	8286	8286
50 M	34	96	246	458	742	995	1213	1161	924	596	194	40	6698
50 S	34	130	376	834	1576	2571	3784	4945	5869	6464	6658	6698	6698
55 M	6	36	134	320	587	845	1058	1006	774	444	95	8	5313
55 S	6	42	176	496	1083	1928	2986	3992	4766	5210	5305	5313	5313
60 M	0	9	59	198	437	695	903	851	624	301	34	0	4112
60 S	0	9	69	267	704	1398	2302	3153	3777	4078	4112	4112	4112

Corn Growing Degree Days
50 M	90	152	298	472	693	839	973	951	813	587	240	100	6207
50 S	90	241	539	1011	1704	2543	3516	4467	5280	5867	6107	6207	6207

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