PUNKIN CTR, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027081) RENO R S
From Year=1915 To Year=1973
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	175	268	460	685	979	1235	1450	1368	1165	827	429	194	9235
40 S	175	443	903	1588	2567	3801	5251	6619	7785	8612	9041	9235	9235
45 M	66	144	310	535	824	1085	1295	1213	1015	673	284	79	7522
45 S	66	210	520	1054	1878	2963	4258	5471	6486	7159	7443	7522	7522
50 M	14	54	174	388	669	935	1140	1058	865	519	154	18	5988
50 S	14	68	243	630	1299	2234	3374	4432	5297	5816	5970	5988	5988
55 M	1	13	73	252	515	785	985	903	715	370	64	1	4677
55 S	1	14	87	339	854	1638	2624	3526	4242	4612	4676	4677	4677
60 M	0	1	20	138	364	635	830	748	565	231	16	0	3549
60 S	0	1	21	159	524	1158	1989	2737	3302	3533	3549	3549	3549

Corn Growing Degree Days
50 M	147	197	308	435	604	741	896	855	728	529	294	148	5883
50 S	147	344	652	1088	1692	2433	3329	4184	4912	5441	5735	5883	5883

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