NEWHALEM, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(455840) NEWHALEM
From Year=1959 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	13	31	99	240	451	591	768	781	597	316	79	14	3980
40 S	13	44	144	384	835	1426	2194	2975	3572	3887	3967	3980	3980
45 M	1	3	29	120	299	441	613	626	447	174	20	1	2774
45 S	1	4	33	153	452	893	1506	2132	2579	2753	2773	2774	2774
50 M	0	0	5	48	169	292	458	471	299	72	2	0	1817
50 S	0	0	5	53	222	515	973	1444	1743	1815	1817	1817	1817
55 M	0	0	0	15	80	163	306	318	169	21	0	0	1072
55 S	0	0	0	15	96	258	565	882	1051	1072	1072	1072	1072
60 M	0	0	0	3	31	75	173	179	76	3	0	0	539
60 S	0	0	0	3	33	109	281	460	536	539	539	539	539

Corn Growing Degree Days
50 M	1	6	42	119	232	314	451	463	324	122	12	1	2086
50 S	1	7	49	167	399	713	1164	1627	1951	2073	2085	2086	2086

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