RIVERSIDE, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357208) RIVERSIDE
From Year=1897 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	9	19	89	233	462	693	968	896	563	266	50	13	4259
40 S	9	27	117	350	811	1504	2473	3368	3931	4197	4247	4259	4259
45 M	1	3	29	124	314	543	813	741	415	144	16	3	3147
45 S	1	5	34	158	471	1015	1828	2569	2984	3128	3144	3147	3147
50 M	0	0	5	52	185	395	658	586	276	61	3	0	2223
50 S	0	0	6	58	243	638	1296	1882	2159	2220	2223	2223	2223
55 M	0	0	0	16	89	257	504	432	157	17	0	0	1474
55 S	0	0	0	16	105	363	867	1299	1456	1474	1474	1474	1474
60 M	0	0	0	3	34	143	353	285	70	3	0	0	891
60 S	0	0	0	3	37	180	533	818	888	891	891	891	891

Corn Growing Degree Days
50 M	4	17	91	209	348	465	589	563	426	265	59	6	3044
50 S	4	21	113	322	670	1135	1724	2288	2714	2979	3037	3044	3044

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