PEARCE SUNSITES, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(026353) PEARCE SUNSITES
From Year=1913 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	180	238	402	589	851	1105	1208	1143	977	721	369	175	7958
40 S	180	418	820	1409	2259	3364	4572	5715	6692	7413	7782	7958	7958
45 M	74	124	258	440	696	955	1053	988	827	567	231	73	6285
45 S	74	198	456	895	1591	2546	3599	4587	5414	5981	6212	6285	6285
50 M	18	46	135	296	541	805	898	833	677	414	114	17	4794
50 S	18	63	199	495	1035	1841	2739	3572	4249	4663	4777	4794	4794
55 M	2	9	50	167	388	655	743	678	527	266	37	2	3524
55 S	2	11	61	227	616	1271	2014	2692	3219	3485	3522	3524	3524
60 M	0	1	10	67	243	505	588	523	378	137	5	0	2456
60 S	0	1	11	77	320	826	1413	1937	2314	2451	2456	2456	2456

Corn Growing Degree Days
50 M	168	204	308	414	548	673	777	747	628	480	285	168	5400
50 S	168	372	680	1094	1642	2315	3092	3839	4467	4947	5232	5400	5400

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