DESERT RESORTS RGNL AP, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048892) THERMAL FAA AIRPORT
From Year=1950 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	454	526	747	925	1190	1377	1589	1561	1346	1062	648	441	11867
40 S	454	981	1728	2653	3843	5219	6808	8369	9715	10778	11426	11867	11867
45 M	303	386	592	775	1035	1227	1434	1406	1196	907	498	289	10048
45 S	303	689	1281	2056	3091	4317	5751	7157	8353	9261	9759	10048	10048
50 M	165	250	438	625	880	1077	1279	1251	1046	752	350	153	8266
50 S	165	416	854	1478	2358	3435	4714	5965	7011	7763	8114	8266	8266
55 M	66	132	289	475	725	927	1124	1096	896	598	213	55	6594
55 S	66	197	486	961	1686	2612	3736	4832	5729	6326	6539	6594	6594
60 M	16	52	158	330	570	777	969	941	746	444	103	11	5117
60 S	16	68	227	556	1126	1903	2871	3812	4559	5003	5106	5117	5117

Corn Growing Degree Days
50 M	324	353	479	581	744	828	959	949	819	661	435	322	7454
50 S	324	677	1156	1737	2481	3309	4268	5217	6035	6696	7131	7454	7454

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