FERN RIDGE DAM, OREGON

Period of Record General Climate Summary - Growing Degree Days

Station:(352867) FERN RIDGE DAM
From Year=1943 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	71	101	177	286	462	624	806	814	664	421	173	87	4686
40 S	71	173	350	635	1098	1721	2528	3341	4005	4426	4599	4686	4686
45 M	19	30	67	150	308	474	651	659	514	270	71	26	3241
45 S	19	50	117	267	576	1050	1701	2360	2873	3143	3214	3241	3241
50 M	3	5	15	60	170	324	496	504	364	137	16	4	2099
50 S	3	7	23	83	252	577	1073	1577	1941	2078	2095	2099	2099
55 M	0	0	2	17	74	184	342	349	219	50	1	0	1237
55 S	0	1	2	19	92	276	618	967	1186	1236	1237	1237	1237
60 M	0	0	0	3	24	81	195	198	100	12	0	0	612
60 S	0	0	0	3	27	108	303	501	601	612	612	612	612

Corn Growing Degree Days
50 M	17	38	82	149	253	355	491	498	393	221	60	21	2577
50 S	17	55	137	286	539	894	1385	1883	2275	2496	2556	2577	2577

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