DALLESPORT FCWOS AP, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451968) DALLESPORT FCWOS AP
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	37	74	203	385	638	811	1036	1021	772	439	130	38	5582
40 S	37	110	313	698	1336	2147	3182	4204	4976	5415	5545	5582	5582
45 M	9	20	86	238	483	661	881	866	622	290	49	9	4214
45 S	9	30	115	354	836	1497	2378	3244	3866	4156	4205	4214	4214
50 M	1	4	22	116	330	511	726	711	472	159	11	2	3065
50 S	1	5	27	144	474	985	1710	2421	2894	3053	3063	3065	3065
55 M	0	0	3	42	192	361	571	556	326	68	1	0	2121
55 S	0	0	3	45	237	599	1169	1726	2051	2119	2120	2121	2121
60 M	0	0	0	11	91	221	416	401	190	21	0	0	1351
60 S	0	0	0	11	102	323	739	1140	1330	1351	1351	1351	1351

Corn Growing Degree Days
50 M	11	33	112	221	376	497	656	649	481	258	49	11	3354
50 S	11	44	156	377	753	1250	1906	2554	3036	3294	3343	3354	3354

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