LEES FERRY, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(024849) LEES FERRY
From Year=1916 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	46	161	403	669	994	1258	1486	1394	1105	722	266	51	8554
40 S	46	207	610	1279	2273	3530	5016	6410	7515	8237	8503	8554	8554
45 M	11	67	258	520	839	1108	1331	1239	955	568	145	12	7049
45 S	11	78	336	855	1694	2802	4132	5371	6326	6893	7038	7049	7049
50 M	1	18	137	374	684	958	1176	1084	805	415	60	2	5713
50 S	1	20	157	531	1214	2172	3348	4431	5236	5651	5712	5713	5713
55 M	0	3	56	239	530	808	1021	929	655	271	17	0	4528
55 S	0	3	59	298	828	1635	2656	3584	4239	4510	4527	4528	4528
60 M	0	0	16	128	380	658	866	774	505	149	3	0	3477
60 S	0	0	16	144	523	1181	2047	2820	3325	3475	3477	3477	3477

Corn Growing Degree Days
50 M	36	112	262	420	625	766	908	867	697	455	172	35	5356
50 S	36	149	411	831	1456	2223	3130	3997	4694	5148	5320	5356	5356

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