BARSTOW, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(040519) BARSTOW
From Year=1903 To Year=1980
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	198	292	461	646	905	1141	1380	1317	1074	774	398	201	8787
40 S	198	490	950	1596	2501	3642	5022	6339	7413	8187	8585	8787	8787
45 M	87	165	309	496	750	991	1225	1162	924	620	257	89	7074
45 S	87	252	561	1057	1807	2798	4023	5184	6109	6728	6985	7074	7074
50 M	25	71	176	349	595	841	1070	1007	774	466	137	26	5538
50 S	25	96	272	622	1217	2058	3128	4134	4908	5375	5511	5538	5538
55 M	4	22	80	217	442	691	915	852	624	319	54	5	4225
55 S	4	26	106	323	764	1456	2371	3222	3846	4165	4220	4225	4225
60 M	0	4	25	111	296	541	760	697	475	187	14	1	3110
60 S	0	5	29	140	437	978	1738	2435	2909	3096	3110	3110	3110

Corn Growing Degree Days
50 M	159	212	312	416	562	688	815	784	654	502	293	170	5568
50 S	159	371	683	1099	1661	2350	3165	3949	4603	5105	5398	5568	5568

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