YUMA PROVING GROUND, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(029654) YUMA PROVING GROUND
From Year=1958 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	495	562	776	942	1222	1442	1666	1648	1422	1115	703	473	12464
40 S	495	1057	1833	2774	3996	5438	7104	8751	10173	11288	11991	12464	12464
45 M	343	421	621	792	1067	1292	1511	1493	1272	960	553	320	10643
45 S	343	764	1385	2176	3243	4535	6045	7538	8810	9770	10323	10643	10643
50 M	199	282	466	642	912	1142	1356	1338	1122	805	404	178	8845
50 S	199	481	947	1589	2501	3642	4998	6336	7458	8263	8667	8845	8845
55 M	83	154	314	492	757	992	1201	1183	972	650	261	67	7125
55 S	83	237	551	1043	1800	2791	3992	5175	6147	6797	7058	7125	7125
60 M	19	60	178	345	602	842	1046	1028	822	496	138	13	5588
60 S	19	79	257	602	1205	2046	3092	4119	4941	5437	5575	5588	5588

Corn Growing Degree Days
50 M	294	337	477	596	774	882	1038	1038	901	717	434	281	7769
50 S	294	631	1109	1705	2478	3361	4399	5437	6338	7055	7489	7769	7769

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