TEHACHAPI, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048826) TEHACHAPI
From Year=1948 To Year=1997
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	100	130	180	306	538	760	996	950	746	505	230	114	5555
40 S	100	231	410	716	1255	2015	3010	3961	4707	5211	5441	5555	5555
45 M	35	53	80	181	388	610	841	795	596	355	118	40	4091
45 S	35	88	168	348	736	1346	2186	2982	3578	3933	4051	4091	4091
50 M	7	14	22	86	250	461	686	640	447	217	45	8	2884
50 S	7	21	43	130	380	841	1527	2167	2614	2832	2877	2884	2884
55 M	1	2	3	30	136	318	531	486	302	106	10	1	1925
55 S	1	2	6	35	172	489	1020	1505	1807	1913	1924	1925	1925
60 M	0	0	0	6	58	191	376	332	170	39	1	0	1173
60 S	0	0	0	6	64	255	631	963	1134	1172	1173	1173	1173

Corn Growing Degree Days
50 M	68	92	118	198	329	474	649	613	473	332	155	80	3582
50 S	68	160	278	476	805	1279	1929	2542	3015	3347	3502	3582	3582

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 Apr 5, 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