BERKELEY, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(040693) BERKELEY
From Year=1893 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	289	344	425	473	568	638	683	690	697	650	467	318	6243
40 S	289	633	1058	1531	2099	2737	3420	4110	4807	5457	5925	6243	6243
45 M	146	205	271	323	413	488	528	535	547	495	318	170	4439
45 S	146	351	622	945	1358	1846	2374	2909	3456	3951	4269	4439	4439
50 M	44	86	130	177	258	338	373	380	397	340	174	59	2756
50 S	44	130	260	437	696	1034	1406	1786	2183	2523	2698	2756	2756
55 M	6	20	41	63	113	189	218	225	247	189	64	10	1384
55 S	6	26	67	130	243	432	650	875	1122	1311	1375	1384	1384
60 M	0	3	9	17	32	68	77	82	108	72	14	1	484
60 S	0	3	12	29	61	129	206	289	397	469	483	484	484

Corn Growing Degree Days
50 M	98	136	184	219	278	340	372	380	393	348	212	111	3071
50 S	98	234	418	637	915	1255	1627	2006	2399	2747	2959	3071	3071

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