MERWIN DAM, WASHINGTON

Period of Record General Climate Summary - Temperature

Station:(455305) MERWIN DAM
From Year=1971 To Year=2006
Monthly Averages Daily Extremes Monthly Extremes Max. Temp. Min. Temp.
Max. Min. Mean High Date Low Date Highest
Mean
Year Lowest
Mean
Year >=
90 F
<=
32 F
<=
32 F
<=
0 F
F F F F dd/yyyy
or
yyyymmdd
F dd/yyyy
or
yyyymmdd
F - F - # Days # Days # Days # Days
January 45.2 32.2 38.7 57 21/1977 20 09/1977 38.7 1977 38.7 1977 0.0 0.0 16.0 0.0
February 62.5 46.7 54.6 805 28/1972 4 22/1972 63.0 1972 46.2 1977 0.5 0.0 4.5 0.0
March 51.5 37.7 44.6 67 17/1976 27 03/1976 45.8 1972 43.9 1976 0.0 0.0 4.0 0.0
April 59.2 40.7 50.0 80 28/1972 32 03/1972 53.4 1977 46.7 1972 0.0 0.0 1.7 0.0
May 66.3 46.7 56.5 84 10/1976 40 18/1976 57.8 1976 54.3 1977 0.0 0.0 0.0 0.0
June -99.0 -99.0 -99.0 **** 99/ - 9999 99/ - ****** 1900 ***** 1900 -99.0 -99.0 -99.0 -99.0
July 80.6 55.1 67.9 95 05/1972 47 10/1972 68.0 1972 67.7 1978 5.5 0.0 0.0 0.0
August 80.5 56.4 68.4 102 13/1977 50 17/1978 70.1 1977 66.8 1978 8.5 0.0 0.0 0.0
September 69.5 51.3 60.4 92 04/1972 38 27/1972 61.3 1978 59.0 1972 1.0 0.0 0.0 0.0
October 65.2 46.6 55.9 82 08/1976 40 30/1976 56.9 1976 54.9 1977 0.0 0.0 0.0 0.0
November 52.6 41.7 47.2 69 03/1976 26 27/1976 50.2 1976 44.9 1977 0.0 0.0 3.3 0.0
December 46.8 39.9 43.4 53 02/1977 33 23/1977 43.4 1977 43.4 1977 0.0 0.0 0.0 0.0
Annual -99.0 -99.0 -99.0 805 19720228 4 19720222 ****** 1900 ***** 1900 -99.0 -99.0 -99.0 -99.0
Winter 51.5 39.6 45.6 805 19720228 4 19720222 -99.0 1900 -99.0 1900 0.5 0.0 20.5 0.0
Spring 59.0 41.7 50.3 84 19760510 27 19760303 50.6 1977 50.5 1976 0.0 0.0 5.7 0.0
Summer -99.0 -99.0 -99.0 102 19770813 47 19720710 -99.0 1900 -99.0 1900 -99.0 -99.0 0.0 -99.0
Fall 62.4 46.5 54.5 92 19720904 26 19761127 53.5 1977 53.5 1977 1.0 0.0 3.3 0.0
Table updated on Jul 28, 2006
For monthly and annual means, thresholds, and sums:
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov.


Western Regional Climate Center, wrcc@dri.edu