CRATER LAKE NATL PARK H, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(351946) CRATER LAKE NATL PARK H
From Year=1919 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	1	2	5	24	91	215	472	468	307	128	20	3	1736
40 S	1	3	9	33	124	340	811	1279	1586	1714	1733	1736	1736
45 M	0	0	0	5	34	114	323	320	188	57	4	0	1046
45 S	0	0	1	5	40	153	477	797	985	1042	1046	1046	1046
50 M	0	0	0	0	8	47	190	187	93	18	0	0	544
50 S	0	0	0	0	8	55	246	433	526	544	544	544	544
55 M	0	0	0	0	1	14	88	83	32	3	0	0	221
55 S	0	0	0	0	1	15	102	186	218	221	221	221	221
60 M	0	0	0	0	0	3	27	24	6	0	0	0	60
60 S	0	0	0	0	0	3	30	54	60	60	60	60	60

Corn Growing Degree Days
50 M	3	3	7	25	72	150	308	307	210	93	15	4	1197
50 S	3	6	13	39	111	260	568	875	1085	1178	1193	1197	1197

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