SIERRA CITY, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048207) SIERRA CITY
From Year=1948 To Year=2000
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	55	76	127	255	463	682	917	882	708	466	167	61	4857
40 S	55	131	258	512	975	1657	2573	3455	4163	4629	4796	4857	4857
45 M	17	26	52	148	322	533	762	727	559	323	82	18	3569
45 S	17	43	95	243	565	1098	1860	2586	3145	3468	3550	3569	3569
50 M	3	5	14	70	199	388	607	572	413	198	30	4	2503
50 S	3	8	22	92	291	679	1286	1858	2271	2469	2499	2503	2503
55 M	0	1	2	24	103	254	452	419	275	100	7	0	1637
55 S	0	1	3	27	129	383	835	1254	1529	1630	1637	1637	1637
60 M	0	0	0	4	40	140	302	270	155	40	1	0	952
60 S	0	0	0	5	45	185	486	757	911	951	952	952	952

Corn Growing Degree Days
50 M	42	62	99	181	306	433	584	562	455	304	109	43	3179
50 S	42	104	203	384	690	1123	1707	2269	2723	3027	3136	3179	3179

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 Apr 5, 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