POMEROY, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(456610) POMEROY
From Year=1948 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	36	57	126	282	506	708	942	914	651	346	98	36	4700
40 S	36	93	219	501	1006	1714	2656	3570	4221	4566	4664	4700	4700
45 M	9	17	48	157	354	558	787	759	501	209	37	9	3445
45 S	9	26	74	231	585	1143	1929	2688	3190	3398	3436	3445	3445
50 M	1	3	13	72	218	409	632	604	356	103	10	1	2423
50 S	1	4	17	90	307	716	1348	1952	2308	2412	2421	2423	2423
55 M	0	0	2	27	113	268	477	450	224	40	2	0	1603
55 S	0	0	2	30	143	410	887	1337	1561	1601	1603	1603	1603
60 M	0	0	0	8	49	149	326	302	118	11	0	0	963
60 S	0	0	0	8	57	206	532	834	952	963	963	963	963

Corn Growing Degree Days
50 M	13	26	75	174	306	433	582	567	415	222	46	13	2872
50 S	13	39	114	288	594	1027	1609	2176	2591	2814	2860	2872	2872

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