RICHARDSON, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457010) RICHARDSON 3 SE LOPEZ
From Year=1949 To Year=1958
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	93	94	137	251	433	485	588	586	530	383	203	123	3905
40 S	93	187	324	575	1008	1492	2080	2666	3196	3579	3782	3905	3905
45 M	19	22	33	108	278	335	433	431	380	229	83	24	2374
45 S	19	41	74	182	460	794	1227	1658	2038	2268	2350	2374	2374
50 M	1	1	1	20	129	185	278	276	230	90	15	1	1227
50 S	1	2	3	24	152	337	615	891	1122	1211	1226	1227	1227
55 M	0	0	0	2	33	58	127	123	95	13	0	0	450
55 S	0	0	0	2	35	92	219	342	437	450	450	450	450
60 M	0	0	0	0	4	10	29	16	20	0	0	0	80
60 S	0	0	0	0	4	14	44	60	80	80	80	80	80

Corn Growing Degree Days
50 M	8	12	35	93	195	211	291	291	252	148	46	12	1595
50 S	8	21	55	149	344	555	846	1137	1389	1537	1583	1595	1595

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