MT ADAMS RS, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(455659) MOUNT ADAMS RANGER STN
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	4	9	54	179	399	572	788	758	519	245	40	7	3575
40 S	4	13	67	246	645	1217	2006	2763	3282	3527	3568	3575	3575
45 M	0	1	14	81	253	423	633	603	371	125	9	1	2513
45 S	0	1	15	96	349	771	1405	2007	2379	2504	2512	2513	2513
50 M	0	0	2	28	135	277	478	448	234	49	1	0	1652
50 S	0	0	2	30	165	442	920	1368	1602	1651	1652	1652	1652
55 M	0	0	0	7	59	151	326	296	120	14	0	0	973
55 S	0	0	0	7	66	217	542	839	959	973	973	973	973
60 M	0	0	0	1	18	66	187	163	46	2	0	0	484
60 S	0	0	0	1	20	85	273	436	482	484	484	484	484

Corn Growing Degree Days
50 M	2	8	49	138	271	362	503	490	357	172	17	2	2372
50 S	2	10	59	197	468	830	1334	1824	2182	2353	2370	2372	2372

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