SANTA MARIA WSO ARPT, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(047946) SANTA MARIA WSO ARPT
From Year=1948 To Year=2005
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	342	355	415	454	542	609	710	726	697	640	473	358	6321
40 S	342	697	1112	1566	2108	2717	3427	4153	4850	5490	5963	6321	6321
45 M	196	217	260	304	387	459	555	571	547	485	324	210	4515
45 S	196	413	674	978	1365	1824	2379	2950	3497	3982	4306	4515	4515
50 M	82	99	124	163	234	309	400	416	397	331	183	90	2827
50 S	82	181	305	468	701	1010	1410	1826	2223	2554	2736	2827	2827
55 M	21	29	38	59	96	161	245	261	247	181	75	24	1437
55 S	21	50	88	147	243	403	648	909	1157	1338	1413	1437	1437
60 M	2	5	6	15	23	44	96	110	106	67	20	3	498
60 S	2	8	14	30	52	96	192	302	408	474	495	498	498

Corn Growing Degree Days
50 M	206	206	231	254	290	329	403	419	403	375	291	226	3632
50 S	206	412	643	896	1186	1514	1918	2336	2740	3114	3406	3632	3632

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 Apr 5, 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