LOMPOC, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(045064) LOMPOC
From Year=1950 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	399	403	468	502	580	631	712	737	723	674	510	401	6741
40 S	399	802	1270	1773	2353	2983	3695	4432	5155	5830	6340	6741	6741
45 M	248	263	313	352	425	481	557	582	573	519	360	249	4922
45 S	248	511	824	1176	1601	2082	2639	3221	3794	4313	4673	4922	4922
50 M	117	134	167	205	270	331	402	427	423	364	215	117	3172
50 S	117	251	418	623	893	1224	1626	2053	2476	2840	3055	3172	3172
55 M	35	46	59	84	123	182	247	272	273	213	96	34	1663
55 S	35	81	140	225	348	529	776	1048	1321	1534	1630	1663	1663
60 M	5	10	11	22	31	57	100	122	129	86	28	4	605
60 S	5	15	26	48	79	136	236	358	487	573	601	605	605

Corn Growing Degree Days
50 M	235	234	261	277	309	344	405	430	429	402	309	248	3884
50 S	235	469	730	1007	1316	1660	2065	2495	2924	3326	3635	3884	3884

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