BARTLETT DAM, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(020632) BARTLETT DAM
From Year=1939 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	396	451	600	806	1093	1333	1557	1506	1319	1041	638	441	11181
40 S	396	848	1448	2254	3347	4680	6236	7742	9061	10102	10739	11181	11181
45 M	252	314	447	656	938	1183	1402	1351	1169	886	489	294	9380
45 S	252	566	1013	1669	2607	3790	5191	6542	7711	8597	9086	9380	9380
50 M	130	190	301	507	783	1033	1247	1196	1019	731	345	165	7646
50 S	130	320	621	1128	1911	2944	4190	5386	6405	7136	7481	7646	7646
55 M	48	94	175	363	628	883	1092	1041	869	577	214	70	6052
55 S	48	142	316	680	1308	2191	3282	4323	5192	5769	5982	6052	6052
60 M	11	33	82	233	474	733	937	886	719	426	109	18	4660
60 S	11	44	126	359	833	1566	2503	3388	4107	4533	4642	4660	4660

Corn Growing Degree Days
50 M	237	277	370	506	683	804	953	937	830	666	393	261	6917
50 S	237	515	884	1390	2073	2877	3830	4767	5598	6263	6656	6917	6917

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