LONGMIRE RAINIER NPS, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(454764) LONGMIRE RAINIER NPS
From Year=1909 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	2	7	28	93	265	432	639	638	462	220	34	3	2824
40 S	2	9	37	130	396	828	1466	2104	2566	2786	2821	2824	2824
45 M	0	1	7	37	149	287	484	483	316	113	7	0	1884
45 S	0	1	8	45	193	481	965	1447	1764	1877	1884	1884	1884
50 M	0	0	1	11	71	164	332	330	189	47	1	0	1146
50 S	0	0	1	13	83	247	580	910	1099	1146	1146	1146	1146
55 M	0	0	0	3	27	78	195	191	95	15	0	0	604
55 S	0	0	0	3	30	108	303	494	589	604	604	604	604
60 M	0	0	0	0	8	29	91	86	37	3	0	0	254
60 S	0	0	0	1	9	38	128	214	251	254	254	254	254

Corn Growing Degree Days
50 M	1	5	22	67	164	245	380	377	271	120	12	0	1664
50 S	1	5	28	95	259	504	884	1262	1532	1652	1664	1664	1664

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