THERMAL FAA AIRPORT, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048892) THERMAL FAA AIRPORT
From Year=1950 To Year=2004
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	529	747	924	1190	1376	1589	1558	1344	1059	650	443	11866
40 S	454	983	1730	2655	3845	5221	6810	8369	9713	10773	11423	11866	11866
45 M	302	388	592	774	1035	1226	1434	1403	1194	904	500	291	10047
45 S	302	691	1283	2057	3093	4319	5753	7157	8351	9256	9756	10047	10047
50 M	165	253	438	624	880	1076	1279	1248	1044	750	352	154	8265
50 S	165	418	856	1480	2361	3437	4716	5965	7009	7759	8111	8265	8265
55 M	66	134	289	475	725	926	1124	1093	894	595	215	55	6592
55 S	66	199	488	963	1688	2614	3739	4832	5726	6321	6536	6592	6592
60 M	17	53	158	329	570	776	969	938	744	442	105	11	5113
60 S	17	70	228	557	1128	1904	2873	3812	4556	4998	5102	5113	5113

Corn Growing Degree Days
50 M	323	354	478	581	745	828	959	948	817	659	436	323	7452
50 S	323	677	1155	1736	2481	3309	4268	5216	6033	6692	7128	7452	7452

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