BISBEE, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(020768) BISBEE
From Year=1892 To Year=1985
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	209	245	408	597	847	1082	1132	1064	952	716	403	231	7885
40 S	209	454	862	1459	2306	3388	4520	5584	6536	7252	7654	7885	7885
45 M	98	133	264	449	693	932	977	909	802	561	263	116	6197
45 S	98	231	495	944	1636	2568	3545	4454	5256	5818	6080	6197	6197
50 M	30	54	141	305	538	782	822	754	652	409	142	39	4667
50 S	30	84	225	530	1068	1850	2672	3426	4078	4487	4628	4667	4667
55 M	5	14	53	175	386	632	667	599	502	262	54	7	3357
55 S	5	20	73	248	634	1266	1932	2532	3034	3296	3349	3357	3357
60 M	0	2	11	75	242	483	512	444	353	133	10	1	2266
60 S	0	3	14	89	331	814	1326	1770	2122	2255	2265	2266	2266

Corn Growing Degree Days
50 M	131	156	250	369	542	710	758	717	630	437	241	139	5081
50 S	131	287	537	906	1448	2158	2916	3633	4263	4700	4941	5081	5081

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