JOSHUA TREE, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(044405) JOSHUA TREE
From Year=1959 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	319	274	479	636	921	1108	1425	1404	1224	846	483	235	9353
40 S	319	593	1072	1708	2629	3737	5161	6565	7789	8635	9118	9353	9353
45 M	184	153	328	486	766	958	1270	1249	1074	691	341	121	7620
45 S	184	337	665	1151	1917	2875	4145	5394	6468	7158	7499	7620	7620
50 M	76	66	195	345	612	808	1115	1094	924	537	212	48	6030
50 S	76	142	337	681	1293	2101	3216	4309	5234	5770	5982	6030	6030
55 M	17	16	93	220	460	658	960	939	774	388	115	12	4650
55 S	17	33	125	345	805	1463	2423	3361	4136	4523	4638	4650	4650
60 M	1	1	29	121	318	508	805	784	624	253	51	0	3495
60 S	1	2	32	152	470	978	1783	2566	3191	3444	3494	3495	3495

Corn Growing Degree Days
50 M	194	166	310	409	577	685	881	869	775	537	299	138	5839
50 S	194	360	670	1079	1656	2340	3221	4090	4865	5403	5701	5839	5839

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