WENATCHEE PANGBORN AP, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(459082) WENATCHEE FAA AP
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	4	18	136	329	596	799	1053	1026	727	346	49	3	5086
40 S	4	22	158	487	1084	1882	2936	3961	4688	5034	5083	5086	5086
45 M	0	2	47	190	442	649	898	871	577	208	11	0	3895
45 S	0	2	50	240	682	1331	2229	3099	3676	3884	3895	3895	3895
50 M	0	0	11	88	292	499	743	716	428	101	1	0	2877
50 S	0	0	11	99	390	889	1632	2348	2776	2876	2877	2877	2877
55 M	0	0	1	30	164	351	588	561	285	38	0	0	2019
55 S	0	0	1	31	196	546	1135	1695	1980	2018	2019	2019	2019
60 M	0	0	0	7	76	214	434	407	161	10	0	0	1310
60 S	0	0	0	7	83	298	732	1139	1300	1310	1310	1310	1310

Corn Growing Degree Days
50 M	2	9	76	186	345	491	677	661	444	188	18	1	3097
50 S	2	11	87	273	618	1108	1785	2446	2891	3078	3096	3097	3097

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