ANACORTES, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(450176) ANACORTES
From Year=1892 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	80	98	171	290	455	567	681	685	554	369	173	93	4216
40 S	80	177	349	639	1094	1661	2342	3027	3581	3950	4123	4216	4216
45 M	20	26	58	147	301	417	526	530	404	218	66	25	2737
45 S	20	46	104	251	551	968	1495	2024	2428	2647	2713	2737	2737
50 M	2	3	10	45	153	267	372	375	255	90	13	3	1587
50 S	2	5	15	60	212	479	851	1226	1481	1571	1585	1587	1587
55 M	0	0	1	7	47	125	219	220	116	19	1	0	755
55 S	0	0	1	8	55	180	399	619	735	754	755	755	755
60 M	0	0	0	1	9	31	81	80	28	2	0	0	230
60 S	0	0	0	1	9	40	120	200	228	230	230	230	230

Corn Growing Degree Days
50 M	11	23	53	118	215	292	383	385	284	149	41	13	1967
50 S	11	34	87	205	421	712	1096	1481	1765	1913	1954	1967	1967

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