POINT GRENVILLE, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(456584) POINT GRENVILLE
From Year=1947 To Year=1979
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	88	105	110	192	328	423	506	523	475	359	194	115	3419
40 S	88	193	303	495	824	1246	1752	2275	2750	3109	3303	3419	3419
45 M	19	27	24	68	175	273	351	368	325	206	79	29	1945
45 S	19	47	70	139	313	586	937	1305	1630	1836	1915	1945	1945
50 M	1	4	2	12	55	125	197	213	177	78	18	3	886
50 S	1	5	7	20	74	200	397	610	787	865	883	886	886
55 M	0	1	0	2	10	28	60	71	57	16	3	0	247
55 S	0	1	1	3	12	41	101	172	228	244	247	247	247
60 M	0	0	0	0	2	5	7	7	9	1	1	0	32
60 S	0	0	0	0	2	7	14	20	30	31	32	32	32

Corn Growing Degree Days
50 M	14	22	25	57	117	166	216	230	215	143	56	21	1281
50 S	14	36	61	119	235	401	616	846	1062	1205	1261	1281	1281

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