HERMISTON 2 S, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(353847) HERMISTON 2 S
From Year=1928 To Year=1997
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	32	63	194	382	641	821	1047	993	709	389	109	41	5422
40 S	32	95	289	671	1312	2133	3180	4173	4882	5271	5381	5422	5422
45 M	8	20	85	239	486	671	892	838	559	245	42	13	4100
45 S	8	28	114	353	839	1510	2402	3241	3799	4045	4087	4100	4100
50 M	1	5	25	122	333	521	737	683	411	127	11	3	2981
50 S	1	6	32	154	487	1009	1746	2429	2839	2967	2978	2981	2981
55 M	0	1	5	48	198	372	582	528	269	51	2	0	2056
55 S	0	1	5	54	252	624	1206	1734	2003	2054	2055	2056	2056
60 M	0	0	0	14	98	231	428	374	148	14	0	0	1306
60 S	0	0	0	14	112	344	771	1145	1293	1306	1306	1306	1306

Corn Growing Degree Days
50 M	15	38	131	249	401	510	652	623	458	263	59	20	3418
50 S	15	53	184	433	834	1344	1996	2618	3076	3339	3398	3418	3418

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