GRAYS RIVER HATCHERY, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(453333) GRAYS RIVER HATCHERY
From Year=1962 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	77	98	154	233	394	515	658	670	554	353	157	79	3942
40 S	77	176	330	563	957	1472	2129	2799	3353	3706	3863	3942	3942
45 M	18	30	54	108	242	365	503	515	404	204	57	19	2518
45 S	18	48	102	210	452	817	1319	1834	2239	2443	2499	2518	2518
50 M	1	5	10	37	116	218	348	360	256	85	10	2	1449
50 S	1	6	16	53	169	387	735	1095	1351	1437	1447	1449	1449
55 M	0	0	1	9	44	96	197	208	125	22	1	0	703
55 S	0	0	1	11	54	150	347	554	680	702	703	703	703
60 M	0	0	0	2	13	30	78	84	42	3	0	0	252
60 S	0	0	0	2	14	45	123	207	249	252	252	252	252

Corn Growing Degree Days
50 M	18	46	81	123	210	274	379	392	330	196	57	15	2120
50 S	18	64	145	268	477	751	1131	1522	1852	2048	2104	2120	2120

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