EVERETT, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452675) EVERETT JR COLLEGE
From Year=1894 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	73	89	159	277	447	577	706	705	541	350	154	81	4161
40 S	73	162	321	598	1046	1623	2329	3034	3576	3926	4080	4161	4161
45 M	18	25	55	139	293	427	551	550	392	202	59	22	2733
45 S	18	43	98	236	529	956	1508	2058	2449	2652	2711	2733	2733
50 M	2	4	11	45	148	277	396	395	244	84	12	3	1622
50 S	2	6	16	62	210	487	884	1279	1522	1607	1619	1622	1622
55 M	0	0	1	9	50	135	242	240	111	21	1	0	811
55 S	0	0	2	11	60	196	437	678	789	810	811	811	811
60 M	0	0	0	1	11	40	101	100	29	3	0	0	284
60 S	0	0	0	1	12	52	153	252	281	284	284	284	284

Corn Growing Degree Days
50 M	14	26	59	124	216	300	405	406	287	154	43	14	2048
50 S	14	40	99	223	439	739	1143	1549	1837	1991	2033	2048	2048

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