KENT, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(454169) KENT
From Year=1912 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	81	105	186	313	494	631	776	769	594	377	157	81	4564
40 S	81	186	372	685	1179	1810	2586	3355	3948	4325	4482	4564	4564
45 M	22	31	71	170	339	481	621	614	444	228	60	22	3103
45 S	22	53	124	294	633	1114	1735	2349	2793	3020	3080	3103	3103
50 M	3	4	15	65	191	331	466	459	295	104	12	3	1948
50 S	3	7	23	88	279	610	1076	1535	1830	1933	1945	1948	1948
55 M	0	0	2	16	79	185	311	304	156	28	1	0	1084
55 S	0	0	2	18	98	283	594	898	1054	1083	1084	1084	1084
60 M	0	0	0	3	23	70	163	155	55	4	0	0	473
60 S	0	0	0	3	26	97	259	414	469	472	473	473	473

Corn Growing Degree Days
50 M	18	38	86	169	279	362	478	475	349	187	52	17	2512
50 S	18	57	143	312	591	953	1431	1907	2256	2443	2495	2512	2512

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