MARICOPA, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(045338) MARICOPA
From Year=1948 To Year=1993
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	220	350	514	689	944	1145	1365	1311	1113	869	467	230	9217
40 S	220	570	1084	1773	2717	3862	5227	6538	7651	8520	8987	9217	9217
45 M	107	216	360	539	789	995	1210	1156	963	714	320	115	7484
45 S	107	323	683	1222	2011	3007	4217	5373	6336	7050	7370	7484	7484
50 M	39	106	216	391	634	845	1055	1001	813	559	188	40	5887
50 S	39	145	360	751	1385	2231	3286	4287	5100	5659	5847	5887	5887
55 M	9	38	101	254	480	695	900	846	663	406	88	9	4490
55 S	9	47	148	402	882	1577	2477	3323	3986	4393	4481	4490	4490
60 M	1	7	33	143	331	545	745	691	513	261	29	2	3302
60 S	1	9	42	184	516	1061	1806	2497	3010	3271	3300	3302	3302

Corn Growing Degree Days
50 M	112	185	288	419	598	734	865	839	724	549	257	120	5690
50 S	112	297	586	1005	1602	2336	3201	4040	4764	5313	5570	5690	5690

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 Jul 28, 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