DOYLE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042504) DOYLE
From Year=1948 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	31	47	100	288	487	695	972	899	710	399	121	25	4774
40 S	31	78	178	466	952	1648	2620	3518	4229	4628	4749	4774	4774
45 M	7	14	32	163	342	545	817	744	561	261	49	5	3539
45 S	7	21	53	216	557	1103	1920	2663	3225	3486	3535	3539	3539
50 M	0	3	6	71	214	398	662	589	415	145	10	1	2514
50 S	0	3	10	81	295	693	1355	1943	2358	2503	2514	2514	2514
55 M	0	0	1	20	112	261	507	434	276	61	1	0	1672
55 S	0	0	1	21	133	394	901	1334	1610	1671	1672	1672	1672
60 M	0	0	0	2	44	147	353	281	154	17	0	0	999
60 S	0	0	0	2	46	194	547	827	981	999	999	999	999

Corn Growing Degree Days
50 M	15	41	101	240	355	462	581	555	482	329	106	13	3280
50 S	15	56	157	397	752	1213	1795	2350	2832	3161	3267	3280	3280

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 Jul 28, 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