CHESAW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451381) CHESAW
From Year=1917 To Year=1958
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	15	135	354	502	725	691	444	151	5	0	3024
40 S	0	0	16	151	505	1007	1732	2423	2868	3019	3024	3024	3024
45 M	0	0	2	55	213	353	570	536	303	68	0	0	2101
45 S	0	0	2	57	270	623	1193	1729	2032	2101	2101	2101	2101
50 M	0	0	0	16	106	212	415	382	181	23	0	0	1336
50 S	0	0	0	16	122	334	749	1131	1313	1336	1336	1336	1336
55 M	0	0	0	3	41	101	266	235	87	5	0	0	737
55 S	0	0	0	3	44	145	411	646	733	737	737	737	737
60 M	0	0	0	0	13	37	138	113	31	0	0	0	333
60 S	0	0	0	0	14	51	189	302	333	333	333	333	333

Corn Growing Degree Days
50 M	0	0	13	104	239	310	464	449	301	109	2	0	1991
50 S	0	0	13	117	356	666	1130	1580	1881	1990	1991	1991	1991

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