ECHO SUMT SIER TAHOE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042671) ECHO SUMMIT SIERRA SKI
From Year=1944 To Year=1994
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	6	9	13	66	177	379	602	602	435	213	34	7	2542
40 S	6	15	28	94	271	649	1251	1853	2288	2501	2535	2542	2542
45 M	0	1	1	22	87	247	448	447	299	117	10	0	1680
45 S	0	1	2	24	111	359	807	1254	1553	1670	1680	1680	1680
50 M	0	0	0	3	31	136	298	297	177	54	1	0	998
50 S	0	0	0	4	35	170	469	765	943	997	998	998	998
55 M	0	0	0	0	6	58	164	159	81	19	0	0	488
55 S	0	0	0	0	6	64	228	387	469	488	488	488	488
60 M	0	0	0	0	0	16	65	59	24	3	0	0	167
60 S	0	0	0	0	0	17	81	140	164	167	167	167	167

Corn Growing Degree Days
50 M	4	7	10	48	113	221	358	355	254	123	19	4	1515
50 S	4	12	22	70	182	403	761	1116	1370	1493	1512	1515	1515

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