CRATER LAKE NATL PARK H, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(351946) CRATER LAKE NATL PARK H
From Year=1931 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	1	2	6	25	92	214	469	468	308	134	19	3	1740
40 S	1	3	9	35	126	340	809	1277	1584	1718	1737	1740	1740
45 M	0	0	1	5	34	113	321	321	189	62	3	0	1048
45 S	0	0	1	5	40	153	474	795	983	1045	1048	1048	1048
50 M	0	0	0	0	8	46	189	189	93	20	0	0	546
50 S	0	0	0	0	8	54	243	432	525	546	546	546	546
55 M	0	0	0	0	1	13	87	85	33	4	0	0	223
55 S	0	0	0	0	1	14	101	186	219	223	223	223	223
60 M	0	0	0	0	0	2	27	25	6	0	0	0	61
60 S	0	0	0	0	0	2	29	55	61	61	61	61	61

Corn Growing Degree Days
50 M	3	3	7	24	69	145	301	302	207	95	15	4	1174
50 S	3	5	13	36	105	251	551	854	1061	1156	1171	1174	1174

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