MEDFORD EXP STN, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(355424) MEDFORD EXP STN
From Year=1937 To Year=2003
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	53	101	192	325	531	707	916	890	682	399	129	54	4978
40 S	53	154	345	671	1202	1908	2824	3714	4396	4795	4924	4978	4978
45 M	16	34	82	187	377	557	761	735	532	252	49	16	3598
45 S	16	50	132	319	696	1253	2014	2749	3281	3533	3582	3598	3598
50 M	3	7	22	84	233	407	606	580	383	126	13	3	2468
50 S	3	10	32	117	350	757	1363	1943	2326	2452	2466	2468	2468
55 M	0	1	3	27	119	263	451	425	242	46	2	0	1580
55 S	0	1	5	31	150	413	865	1289	1531	1578	1580	1580	1580
60 M	0	0	0	4	47	143	299	273	122	11	0	0	900
60 S	0	0	0	5	52	194	493	766	888	899	900	900	900

Corn Growing Degree Days
50 M	22	67	137	230	354	447	563	552	456	284	69	19	3198
50 S	22	89	225	455	809	1256	1819	2371	2827	3111	3179	3198	3198

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