MTN PASS, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(045890) MOUNTAIN PASS
From Year=1955 To Year=2007
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	86	133	250	416	714	995	1230	1155	907	600	251	103	6841
40 S	86	219	469	885	1599	2594	3824	4979	5886	6486	6737	6841	6841
45 M	28	60	140	281	560	845	1075	1000	757	449	140	36	5371
45 S	28	88	228	509	1069	1914	2988	3989	4746	5194	5334	5371	5371
50 M	5	19	65	167	411	695	920	845	607	306	61	7	4109
50 S	5	24	90	256	667	1363	2282	3127	3734	4040	4101	4109	4109
55 M	0	4	24	81	275	546	765	690	459	181	20	1	3045
55 S	0	4	28	109	384	930	1695	2385	2844	3025	3045	3045	3045
60 M	0	0	4	31	162	401	610	535	316	89	4	0	2153
60 S	0	0	4	35	198	598	1208	1743	2059	2149	2153	2153	2153

Corn Growing Degree Days
50 M	53	80	154	257	451	648	810	771	591	369	150	64	4396
50 S	53	133	286	544	995	1643	2452	3223	3814	4182	4332	4396	4396

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