PRIEST VALLEY, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(047150) PRIEST VALLEY
From Year=1948 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	129	161	239	347	568	763	990	967	789	559	252	127	5890
40 S	129	290	529	875	1443	2206	3196	4163	4952	5511	5763	5890	5890
45 M	45	65	114	208	414	613	835	812	639	405	129	41	4321
45 S	45	110	224	432	847	1459	2294	3106	3745	4151	4280	4321	4321
50 M	8	16	38	98	267	464	680	657	490	258	46	7	3027
50 S	8	23	61	159	426	889	1569	2226	2715	2974	3020	3027	3027
55 M	1	2	7	31	143	318	525	502	342	133	9	1	2012
55 S	1	3	10	41	184	502	1026	1528	1870	2003	2012	2012	2012
60 M	0	0	0	6	60	186	370	348	205	52	0	0	1227
60 S	0	0	1	7	66	252	622	970	1175	1227	1227	1227	1227

Corn Growing Degree Days
50 M	119	137	195	281	411	496	587	578	510	421	221	128	4081
50 S	119	256	450	731	1142	1638	2224	2802	3312	3733	3953	4081	4081

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