LONGVIEW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(454769) LONGVIEW
From Year=1925 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	69	102	188	301	478	603	761	769	632	412	171	78	4564
40 S	69	171	359	660	1138	1741	2502	3272	3903	4315	4486	4564	4564
45 M	18	30	74	162	324	453	606	614	482	260	69	20	3112
45 S	18	48	122	284	607	1061	1667	2281	2763	3023	3092	3112	3112
50 M	2	4	18	66	180	304	451	459	332	127	16	2	1962
50 S	2	6	25	91	270	574	1025	1485	1817	1944	1960	1962	1962
55 M	0	0	2	20	78	163	297	305	190	41	1	0	1098
55 S	0	0	3	23	101	264	561	865	1055	1096	1098	1098	1098
60 M	0	0	0	4	27	65	154	158	80	7	0	0	494
60 S	0	0	0	4	31	96	250	408	488	494	494	494	494

Corn Growing Degree Days
50 M	13	40	92	164	270	343	461	469	370	210	56	13	2502
50 S	13	53	145	309	579	922	1383	1852	2223	2433	2488	2502	2502

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