CLEARBROOK, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451484) CLEARBROOK
From Year=1931 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	46	64	138	268	452	576	703	695	540	324	119	53	3977
40 S	46	110	248	516	968	1544	2247	2942	3481	3805	3924	3977	3977
45 M	9	14	42	130	297	426	548	540	390	180	39	12	2626
45 S	9	23	65	195	492	918	1466	2006	2396	2575	2615	2626	2626
50 M	1	1	7	44	154	277	393	385	242	71	6	1	1582
50 S	1	2	9	53	207	484	877	1261	1504	1574	1581	1582	1582
55 M	0	0	1	10	56	136	239	231	113	16	0	0	801
55 S	0	0	1	11	67	203	442	673	785	801	801	801	801
60 M	0	0	0	1	14	41	101	96	30	2	0	0	287
60 S	0	0	0	1	16	57	159	255	285	287	287	287	287

Corn Growing Degree Days
50 M	8	19	59	139	247	321	420	421	316	157	33	9	2149
50 S	8	27	86	225	472	793	1213	1634	1950	2107	2140	2149	2149

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