HARTLINE, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(453529) HARTLINE
From Year=1948 To Year=2005
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	1	12	83	255	513	727	975	942	661	292	32	1	4495
40 S	1	13	96	351	864	1591	2565	3508	4169	4461	4493	4495	4495
45 M	0	1	23	134	361	577	820	788	512	164	6	0	3385
45 S	0	1	24	158	519	1096	1916	2703	3215	3379	3385	3385	3385
50 M	0	0	4	57	223	428	665	633	366	74	1	0	2451
50 S	0	0	4	61	284	712	1377	2010	2376	2450	2451	2451	2451
55 M	0	0	0	19	118	285	510	478	234	27	0	0	1671
55 S	0	0	0	19	137	422	932	1410	1644	1671	1671	1671	1671
60 M	0	0	0	4	50	162	360	328	128	8	0	0	1040
60 S	0	0	0	4	55	217	576	905	1032	1040	1040	1040	1040

Corn Growing Degree Days
50 M	0	6	54	169	327	457	612	594	420	188	13	0	2841
50 S	0	6	60	229	556	1013	1626	2220	2640	2827	2841	2841	2841

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