KENNEWICK 10 SW, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(454159) KENNEWICK 10 SW
From Year=1949 To Year=1974
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	24	47	132	295	578	787	1047	1009	721	375	79	25	5119
40 S	24	71	203	499	1076	1863	2910	3919	4640	5015	5094	5119	5119
45 M	5	13	51	162	423	637	892	854	571	233	22	4	3867
45 S	5	18	68	230	654	1291	2183	3037	3608	3841	3863	3867	3867
50 M	1	2	14	71	277	487	737	699	423	121	3	0	2836
50 S	1	3	17	88	365	852	1589	2288	2711	2833	2836	2836	2836
55 M	0	0	3	25	158	340	582	544	282	51	0	0	1986
55 S	0	0	3	28	186	526	1108	1652	1935	1986	1986	1986	1986
60 M	0	0	0	6	76	209	428	392	163	16	0	0	1290
60 S	0	0	0	7	83	292	720	1112	1275	1290	1290	1290	1290

Corn Growing Degree Days
50 M	6	17	67	174	351	490	661	641	447	194	24	5	3077
50 S	6	23	90	264	615	1105	1766	2407	2854	3048	3073	3077	3077

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