SAINT JOHN, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457267) SAINT JOHN
From Year=1963 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	15	31	97	231	452	634	851	842	581	274	63	14	4086
40 S	15	47	144	375	827	1461	2311	3153	3734	4009	4071	4086	4086
45 M	3	6	32	119	303	484	696	687	433	152	20	2	2934
45 S	3	9	41	160	462	946	1641	2329	2761	2913	2932	2934	2934
50 M	0	1	7	49	173	336	541	532	290	67	4	0	2000
50 S	0	1	8	57	230	566	1107	1639	1929	1996	2000	2000	2000
55 M	0	0	1	15	81	201	387	379	167	21	1	0	1252
55 S	0	0	1	16	96	297	684	1063	1230	1251	1252	1252	1252
60 M	0	0	0	3	30	98	240	235	76	5	0	0	687
60 S	0	0	0	3	33	131	371	606	682	687	687	687	687

Corn Growing Degree Days
50 M	3	15	64	156	295	403	539	537	392	207	26	3	2639
50 S	3	18	81	238	533	936	1474	2011	2404	2610	2636	2639	2639

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