MORRO BAY FIRE DEPT, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(045866) MORRO BAY FIRE DEPT
From Year=1959 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	384	378	423	430	473	517	580	608	604	608	492	386	5884
40 S	384	762	1185	1615	2088	2605	3185	3794	4397	5006	5498	5884	5884
45 M	232	239	269	280	318	367	425	453	454	453	342	235	4066
45 S	232	470	739	1019	1337	1704	2129	2582	3036	3490	3832	4066	4066
50 M	102	112	127	137	165	217	270	298	304	298	196	104	2331
50 S	102	214	341	477	643	860	1130	1428	1732	2030	2226	2331	2331
55 M	28	33	37	43	45	75	116	144	155	152	80	27	935
55 S	28	61	98	141	186	261	377	521	676	828	908	935	935
60 M	5	6	7	12	9	10	17	28	49	56	22	4	224
60 S	5	11	18	30	39	49	66	94	142	198	220	224	224

Corn Growing Degree Days
50 M	194	186	203	206	210	234	276	302	309	321	257	198	2896
50 S	194	380	582	788	999	1233	1508	1810	2119	2440	2698	2896	2896

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