ANGWIN PAC UNION COL, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(040212) ANGWIN PAC UNION COL
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	178	213	289	402	608	770	952	925	813	644	327	188	6310
40 S	178	391	680	1083	1691	2460	3413	4337	5151	5795	6122	6310	6310
45 M	75	103	159	263	454	620	797	770	663	490	194	82	4668
45 S	75	177	336	599	1052	1672	2469	3239	3902	4392	4586	4668	4668
50 M	22	37	71	147	305	470	642	615	513	340	94	25	3280
50 S	22	58	129	277	582	1052	1694	2309	2822	3162	3256	3280	3280
55 M	4	10	26	69	179	324	487	460	365	207	36	5	2173
55 S	4	14	40	109	288	612	1099	1559	1924	2131	2167	2173	2173
60 M	1	1	7	26	90	194	334	307	227	108	10	1	1306
60 S	1	2	9	34	124	318	652	959	1186	1295	1305	1306	1306

Corn Growing Degree Days
50 M	63	88	145	233	373	481	604	583	509	375	149	65	3667
50 S	63	151	296	528	901	1383	1986	2569	3078	3454	3602	3667	3667

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