ASTORIA, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(350324) ASTORIA
From Year=1892 To Year=1960
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	91	116	177	283	427	530	653	670	576	442	227	125	4316
40 S	91	207	384	667	1094	1624	2277	2946	3522	3964	4190	4316	4316
45 M	25	34	63	141	272	380	498	515	426	288	100	35	2775
45 S	25	58	122	263	535	914	1412	1927	2352	2641	2740	2775	2775
50 M	3	4	16	45	128	230	343	360	276	143	23	4	1574
50 S	3	7	22	68	195	425	768	1128	1404	1547	1570	1574	1574
55 M	0	0	3	10	37	93	189	205	132	43	2	0	714
55 S	0	0	3	14	51	143	332	537	669	712	714	714	714
60 M	0	0	0	2	9	19	58	66	37	8	0	0	199
60 S	0	0	0	2	11	30	88	154	191	198	199	199	199

Corn Growing Degree Days
50 M	15	27	57	111	186	251	348	362	292	186	62	20	1917
50 S	15	42	99	210	395	646	994	1356	1648	1834	1896	1917	1917

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