BARRETT DAM, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(040514) BARRETT DAM
From Year=1913 To Year=1980
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	277	303	408	517	692	852	1109	1112	956	737	477	323	7762
40 S	277	580	988	1504	2196	3048	4156	5268	6225	6962	7439	7762	7762
45 M	146	173	258	368	537	702	954	957	806	582	330	183	5995
45 S	146	319	577	945	1481	2183	3137	4094	4900	5482	5812	5995	5995
50 M	54	72	132	229	383	552	799	802	656	428	193	77	4377
50 S	54	126	258	487	870	1422	2220	3022	3678	4107	4300	4377	4377
55 M	11	19	47	114	238	402	644	647	506	280	86	21	3014
55 S	11	29	76	190	428	830	1474	2121	2627	2907	2993	3014	3014
60 M	1	2	9	40	117	258	489	492	358	150	25	3	1944
60 S	1	3	13	52	170	428	916	1409	1766	1916	1941	1944	1944

Corn Growing Degree Days
50 M	216	217	269	321	419	521	684	688	590	471	343	248	4989
50 S	216	434	703	1024	1443	1965	2648	3336	3926	4397	4740	4989	4989

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