CLEARBROOK, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(451484) CLEARBROOK
From Year=1903 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	41	60	133	261	442	566	695	685	528	316	117	49	3892
40 S	41	100	233	494	937	1502	2197	2882	3410	3726	3844	3892	3892
45 M	8	12	41	126	288	416	540	530	379	173	38	10	2562
45 S	8	20	62	187	476	891	1432	1961	2340	2513	2551	2562	2562
50 M	1	1	8	42	146	267	385	375	232	66	6	1	1530
50 S	1	2	9	51	197	464	849	1224	1456	1522	1529	1530	1530
55 M	0	0	1	9	51	129	232	222	106	14	0	0	765
55 S	0	0	1	10	62	190	423	645	750	764	765	765	765
60 M	0	0	0	1	13	38	98	90	29	1	0	0	271
60 S	0	0	0	1	14	53	151	241	270	271	271	271	271

Corn Growing Degree Days
50 M	7	18	60	139	246	319	423	419	314	156	33	9	2143
50 S	7	25	85	225	471	789	1212	1631	1944	2101	2134	2143	2143

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