GRAYLAND, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(453320) GRAYLAND
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	113	131	173	246	376	477	562	583	523	377	202	110	3874
40 S	113	245	418	664	1040	1517	2079	2662	3185	3562	3764	3874	3874
45 M	31	44	61	109	222	327	407	428	373	225	84	29	2340
45 S	31	75	136	245	467	794	1202	1630	2003	2228	2312	2340	2340
50 M	2	8	12	30	88	178	252	273	224	97	17	2	1185
50 S	2	10	22	52	140	319	571	844	1069	1166	1183	1185	1185
55 M	0	1	1	7	22	55	106	124	95	26	1	0	437
55 S	0	1	2	9	31	85	191	315	410	436	437	437	437
60 M	0	0	0	2	5	10	18	23	25	4	0	0	87
60 S	0	0	0	2	7	17	35	58	83	87	87	87	87

Corn Growing Degree Days
50 M	19	38	59	93	159	217	279	301	276	175	60	16	1691
50 S	19	57	116	209	367	584	863	1164	1440	1615	1675	1691	1691

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