GRANTS PASS, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(353445) GRANTS PASS
From Year=1893 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	68	127	244	372	572	735	955	931	718	451	171	72	5416
40 S	68	195	439	811	1382	2117	3072	4004	4721	5173	5343	5416	5416
45 M	18	46	119	230	417	585	800	776	568	300	72	22	3952
45 S	18	64	182	412	830	1414	2215	2991	3559	3858	3930	3952	3952
50 M	3	10	40	117	269	435	645	621	418	164	20	4	2747
50 S	3	12	53	169	439	874	1519	2141	2559	2723	2743	2747	2747
55 M	0	1	8	45	146	289	491	466	273	66	3	0	1789
55 S	0	1	9	54	201	490	980	1447	1720	1786	1789	1789	1789
60 M	0	0	0	11	63	160	337	314	147	17	0	0	1050
60 S	0	0	0	11	74	235	572	885	1033	1050	1050	1050	1050

Corn Growing Degree Days
50 M	22	75	167	256	371	462	582	569	468	307	78	20	3377
50 S	22	97	264	520	891	1353	1935	2504	2972	3279	3357	3377	3377

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