PENDLETON WSO AIRPORT, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(356546) PENDLETON WSO AIRPORT
From Year=1928 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	45	67	173	331	570	762	1024	981	707	391	112	55	5217
40 S	45	112	285	616	1185	1948	2972	3953	4659	5050	5162	5217	5217
45 M	14	22	71	192	415	612	869	826	557	248	43	18	3887
45 S	14	36	107	299	715	1327	2196	3022	3579	3826	3869	3887	3887
50 M	3	5	21	89	268	462	714	671	409	129	12	4	2788
50 S	3	8	29	119	386	849	1563	2234	2642	2772	2783	2788	2788
55 M	0	1	4	33	146	316	559	516	268	53	2	1	1899
55 S	0	1	5	38	184	500	1059	1575	1843	1896	1898	1899	1899
60 M	0	0	0	9	66	184	405	362	148	16	0	0	1192
60 S	0	0	1	10	76	260	665	1028	1175	1192	1192	1192	1192

Corn Growing Degree Days
50 M	18	30	92	189	333	463	641	618	434	224	47	21	3109
50 S	18	47	139	327	660	1123	1765	2383	2816	3041	3088	3109	3109

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