WALNUT CREEK, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(029158) WALNUT CREEK
From Year=1915 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	31	64	157	308	540	764	998	944	724	427	132	25	5114
40 S	31	95	252	560	1100	1863	2861	3806	4530	4957	5089	5114	5114
45 M	5	15	62	176	387	614	843	789	574	281	48	3	3796
45 S	5	20	82	258	645	1258	2101	2890	3464	3745	3793	3796	3796
50 M	0	2	15	74	243	464	688	634	424	150	9	0	2703
50 S	0	2	18	91	334	798	1486	2120	2544	2694	2703	2703	2703
55 M	0	0	2	19	121	316	533	479	278	56	1	0	1804
55 S	0	0	2	20	141	457	990	1469	1747	1803	1804	1804	1804
60 M	0	0	0	2	41	180	378	325	145	12	0	0	1083
60 S	0	0	0	2	43	224	602	926	1071	1083	1083	1083	1083

Corn Growing Degree Days
50 M	68	108	192	296	424	518	628	605	496	358	170	67	3931
50 S	68	176	368	664	1087	1605	2234	2839	3335	3693	3863	3931	3931

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