CHESAW 4 NNW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451385) CHESAW 4 NNW
From Year=1959 To Year=1984
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	0	0	6	65	254	457	623	611	352	106	2	0	2478
40 S	0	1	6	72	326	784	1407	2017	2370	2475	2478	2478	2478
45 M	0	0	1	21	132	310	468	456	218	41	0	0	1647
45 S	0	0	1	21	154	464	932	1388	1606	1646	1647	1647	1647
50 M	0	0	0	5	52	177	316	306	110	10	0	0	977
50 S	0	0	0	5	57	234	550	856	967	977	977	977	977
55 M	0	0	0	1	13	81	181	173	42	1	0	0	493
55 S	0	0	0	1	14	95	276	449	491	493	493	493	493
60 M	0	0	0	0	2	28	80	77	10	0	0	0	197
60 S	0	0	0	0	2	29	109	187	197	197	197	197	197

Corn Growing Degree Days
50 M	0	0	6	55	172	283	402	391	243	84	2	0	1638
50 S	0	0	7	61	233	516	918	1309	1552	1636	1638	1638	1638

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