BOWMAN DAM, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(041018) BOWMAN DAM
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	38	44	69	158	344	577	815	803	635	406	143	54	4087
40 S	38	83	151	309	653	1230	2045	2849	3484	3890	4033	4087	4087
45 M	9	10	20	75	216	431	660	648	488	272	66	14	2910
45 S	9	19	39	114	330	760	1421	2069	2557	2829	2895	2910	2910
50 M	1	1	3	26	115	292	506	494	346	158	21	2	1963
50 S	1	2	5	31	146	437	943	1437	1783	1941	1961	1963	1963
55 M	0	0	0	5	45	170	353	342	215	76	4	0	1210
55 S	0	0	0	5	50	220	574	915	1131	1207	1210	1210	1210
60 M	0	0	0	0	12	80	210	200	107	28	0	0	637
60 S	0	0	0	0	12	92	302	502	609	637	637	637	637

Corn Growing Degree Days
50 M	27	36	55	109	212	349	517	507	385	237	84	35	2553
50 S	27	63	118	227	439	788	1305	1812	2197	2434	2518	2553	2553

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