GRAYLAND, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(453320) GRAYLAND
From Year=1948 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	112	130	172	243	374	477	563	583	522	373	203	107	3860
40 S	112	243	415	658	1032	1509	2072	2655	3177	3550	3753	3860	3860
45 M	31	43	60	106	220	327	408	428	372	222	84	28	2330
45 S	31	74	134	241	461	788	1196	1624	1996	2218	2302	2330	2330
50 M	2	8	12	29	87	178	253	273	223	94	18	2	1178
50 S	2	10	21	50	137	315	568	841	1065	1159	1177	1178	1178
55 M	0	1	1	7	21	55	106	123	94	25	1	0	435
55 S	0	1	2	9	30	85	191	314	409	434	435	435	435
60 M	0	0	0	1	6	9	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	18	38	57	91	157	216	278	299	273	173	60	16	1675
50 S	18	56	114	204	361	577	855	1154	1427	1600	1659	1675	1675

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