PASO ROBLES, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(046730) PASO ROBLES
From Year=1894 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	218	283	399	496	671	819	976	967	841	656	377	216	6918
40 S	218	501	900	1396	2066	2886	3862	4828	5669	6325	6702	6918	6918
45 M	98	155	248	347	516	669	821	812	691	501	234	94	5186
45 S	98	253	501	848	1364	2033	2854	3666	4357	4857	5091	5186	5186
50 M	27	59	122	206	362	519	666	657	541	347	113	26	3645
50 S	27	86	208	414	776	1295	1961	2618	3159	3506	3619	3645	3645
55 M	3	13	40	96	216	370	511	502	391	204	37	4	2387
55 S	3	16	57	153	369	738	1250	1751	2143	2346	2383	2387	2387
60 M	0	1	7	31	102	228	357	347	247	91	6	0	1418
60 S	0	1	8	39	141	369	726	1074	1320	1412	1418	1418	1418

Corn Growing Degree Days
50 M	165	193	268	340	438	500	575	572	519	450	290	175	4484
50 S	165	358	626	966	1404	1903	2478	3050	3569	4019	4309	4484	4484

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