PASO ROBLES MUNI AP, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(046742) PASO ROBLES FAA ARPT
From Year=1948 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	222	284	390	502	709	868	1046	1034	893	685	381	213	7226
40 S	222	505	895	1398	2107	2974	4020	5054	5947	6632	7013	7226	7226
45 M	100	154	239	353	554	718	891	879	743	530	238	91	5488
45 S	100	253	493	845	1399	2117	3008	3887	4630	5160	5397	5488	5488
50 M	27	58	112	211	400	568	736	724	593	376	117	24	3945
50 S	27	85	196	408	807	1375	2111	2835	3428	3804	3921	3945	3945
55 M	3	11	34	100	250	418	581	569	443	231	39	3	2682
55 S	3	15	49	149	399	817	1398	1967	2410	2641	2679	2682	2682
60 M	0	1	5	34	128	272	426	414	295	111	7	0	1694
60 S	0	1	6	40	168	440	866	1281	1576	1687	1694	1694	1694

Corn Growing Degree Days
50 M	152	182	253	335	447	515	605	599	533	447	269	158	4495
50 S	152	334	587	922	1369	1884	2489	3088	3621	4069	4337	4495	4495

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