RICHLAND, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357160) RICHLAND
From Year=1893 To Year=2011
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	8	26	116	289	537	745	1008	962	651	333	65	10	4751
40 S	8	33	149	438	976	1721	2729	3691	4343	4676	4741	4751	4751
45 M	1	5	43	164	385	595	853	807	502	201	20	1	3577
45 S	1	6	49	213	598	1194	2047	2854	3356	3556	3576	3577	3577
50 M	0	1	11	76	244	447	699	652	355	99	4	0	2587
50 S	0	1	12	88	332	779	1478	2130	2484	2583	2587	2587	2587
55 M	0	0	2	28	130	303	545	497	221	36	0	0	1764
55 S	0	0	2	31	161	464	1009	1507	1728	1764	1764	1764	1764
60 M	0	0	0	8	56	178	393	347	113	8	0	0	1103
60 S	0	0	0	8	64	242	635	982	1095	1103	1103	1103	1103

Corn Growing Degree Days
50 M	3	22	103	232	371	477	604	581	453	280	57	5	3188
50 S	3	25	128	361	732	1208	1812	2393	2846	3126	3183	3188	3188

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