RICHLAND, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357160) RICHLAND
From Year=1948 To Year=2006
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	31	125	308	568	773	1019	986	679	346	65	10	4920
40 S	9	40	165	473	1042	1815	2834	3819	4498	4844	4909	4920	4920
45 M	1	7	48	180	415	623	865	831	529	211	21	1	3731
45 S	1	8	56	236	651	1274	2138	2969	3498	3709	3730	3731	3731
50 M	0	1	13	87	271	474	710	676	381	105	4	0	2723
50 S	0	1	14	101	373	846	1557	2232	2613	2719	2723	2723	2723
55 M	0	0	3	34	151	328	557	521	245	39	0	0	1879
55 S	0	0	3	37	188	516	1073	1594	1839	1878	1879	1879	1879
60 M	0	0	0	11	68	198	406	369	131	10	0	0	1192
60 S	0	0	0	11	79	278	683	1052	1183	1192	1192	1192	1192

Corn Growing Degree Days
50 M	4	28	111	248	394	492	606	588	471	295	62	6	3303
50 S	4	31	142	390	784	1276	1882	2469	2941	3235	3297	3303	3303

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 Jul 28, 2006
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