SEASIDE, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(357641) SEASIDE
From Year=1930 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	156	169	202	271	402	504	604	626	563	438	254	172	4360
40 S	156	325	527	798	1201	1704	2308	2934	3497	3935	4189	4360	4360
45 M	58	67	78	129	248	354	449	471	413	284	124	64	2738
45 S	58	125	202	332	579	933	1382	1853	2266	2550	2674	2738	2738
50 M	11	16	17	37	106	204	294	316	264	141	37	11	1453
50 S	11	27	44	80	187	391	685	1000	1264	1405	1442	1453	1453
55 M	1	2	2	7	26	70	142	162	124	45	5	1	586
55 S	1	3	5	12	38	107	249	411	535	580	585	586	586
60 M	0	0	0	1	6	11	29	38	35	9	0	0	129
60 S	0	0	1	2	7	18	47	85	120	128	129	129	129

Corn Growing Degree Days
50 M	44	59	76	109	174	234	308	328	301	216	96	48	1995
50 S	44	104	180	289	463	697	1005	1333	1635	1851	1947	1995	1995

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