GEM LAKE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(043369) GEM LAKE
From Year=1924 To Year=2009
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	4	2	9	55	186	376	633	596	375	172	40	7	2456
40 S	4	6	15	70	256	632	1265	1861	2237	2408	2448	2456	2456
45 M	0	0	1	14	85	243	478	441	238	76	6	0	1584
45 S	0	1	1	15	100	343	821	1263	1500	1577	1583	1584	1584
50 M	0	0	0	2	27	131	326	289	123	20	0	0	917
50 S	0	0	0	2	29	160	486	775	898	917	917	917	917
55 M	0	0	0	0	6	56	183	151	43	2	0	0	441
55 S	0	0	0	0	6	62	246	396	439	441	441	441	441
60 M	0	0	0	0	1	17	77	48	6	0	0	0	149
60 S	0	0	0	0	1	18	95	143	149	149	149	149	149

Corn Growing Degree Days
50 M	4	5	24	62	135	231	384	346	221	105	26	5	1549
50 S	4	9	33	95	230	461	845	1191	1413	1518	1544	1549	1549

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