SENTINEL, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027751) SENTINEL
From Year=1899 To Year=1960
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	429	456	709	907	1091	1415	1620	1582	1337	991	655	363	11556
40 S	429	886	1595	2501	3592	5007	6627	8210	9547	10538	11193	11556	11556
45 M	279	315	554	757	936	1265	1465	1427	1187	836	506	218	9744
45 S	279	593	1148	1904	2840	4105	5570	6997	8184	9020	9526	9744	9744
50 M	142	179	400	607	781	1115	1310	1272	1037	681	357	103	7984
50 S	142	322	722	1328	2109	3224	4534	5806	6843	7524	7881	7984	7984
55 M	49	75	252	457	626	965	1155	1117	887	526	216	34	6359
55 S	49	124	376	833	1459	2424	3579	4696	5583	6109	6325	6359	6359
60 M	9	20	130	309	471	815	1000	962	737	374	101	6	4935
60 S	9	29	159	468	940	1755	2755	3717	4454	4828	4929	4935	4935

Corn Growing Degree Days
50 M	284	323	470	555	652	815	974	961	803	608	434	274	7152
50 S	284	608	1077	1633	2285	3099	4073	5034	5837	6445	6878	7152	7152

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