SKAGIT POWER PLANT, WASHINGTON

Monthly Extreme Minimum Temperature (Degrees Fahrenheit)

(457690)

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 195812
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1931 30.00 29.00 29.00 29.00 38.00 43.00 43.00 46.00 32.00 36.00 23.00 24.00 23.00
1932 7.00 10.00 25.00 35.00 37.00 40.00 41.00 50.00 38.00 33.00 31.00 10.00 7.00
1933 21.00 4.00 26.00 30.00 34.00 35.00 43.00 48.00 33.00 a 32.00 31.00 23.00 4.00
1934 29.00 a 31.00 32.00 32.00 35.00 41.00 43.00 48.00 32.00 30.00 a 33.00 20.00 20.00
1935 -1.00 27.00 28.00 27.00 32.00 38.00 41.00 42.00 40.00 23.00 22.00 28.00 -1.00
1936 24.00 -4.00 22.00 26.00 36.00 42.00 42.00 a 46.00 38.00 35.00 28.00 25.00 -4.00
1937 9.00 14.00 30.00 32.00 36.00 42.00 45.00 41.00 40.00 37.00 26.00 18.00 9.00
1938 21.00 25.00 26.00 31.00 37.00 39.00 44.00 44.00 47.00 d 34.00 28.00 27.00 21.00
1939 30.00 14.00 23.00 30.00 37.00 36.00 44.00 45.00 c 40.00 32.00 35.00 25.00 14.00
1940 24.00 30.00 30.00 31.00 35.00 41.00 44.00 44.00 43.00 33.00 21.00 29.00 21.00
1941 30.00 30.00 31.00 34.00 35.00 43.00 48.00 48.00 40.00 38.00 29.00 18.00 18.00
1942 15.00 26.00 28.00 34.00 33.00 43.00 50.00 48.00 41.00 37.00 29.00 27.00 15.00
1943 -2.00 28.00 24.00 34.00 37.00 41.00 47.00 44.00 43.00 31.00 27.00 27.00 -2.00
1944 24.00 26.00 24.00 31.00 33.00 40.00 43.00 46.00 43.00 40.00 29.00 21.00 21.00
1945 27.00 28.00 26.00 28.00 40.00 40.00 43.00 36.00 40.00 33.00 19.00 21.00 19.00
1946 23.00 25.00 30.00 29.00 36.00 41.00 44.00 45.00 40.00 29.00 20.00 19.00 19.00
1947 12.00 19.00 29.00 34.00 38.00 41.00 45.00 42.00 37.00 34.00 29.00 26.00 12.00
1948 28.00 16.00 27.00 28.00 37.00 41.00 41.00 a 44.00 a 39.00 28.00 28.00 22.00 16.00
1949 11.00 12.00 d 29.00 30.00 31.00 40.00 41.00 43.00 39.00 29.00 35.00 16.00 11.00
1950 -6.00 6.00 27.00 30.00 33.00 40.00 46.00 45.00 40.00 34.00 28.00 31.00 -6.00
1951 9.00 16.00 16.00 29.00 36.00 40.00 a 43.00 44.00 a 40.00 31.00 27.00 14.00 9.00
1952 7.00 24.00 26.00 26.00 a 34.00 36.00 e 42.00 47.00 42.00 38.00 26.00 25.00 e 7.00
1953 24.00 26.00 28.00 31.00 35.00 42.00 44.00 46.00 40.00 35.00 33.00 24.00 24.00
1954 10.00 27.00 21.00 32.00 33.00 a 40.00 44.00 45.00 a 44.00 37.00 33.00 31.00 10.00
1955 28.00 15.00 9.00 30.00 33.00 43.00 46.00 46.00 44.00 35.00 7.00 17.00 7.00
1956 15.00 4.00 19.00 32.00 38.00 42.00 44.00 a 49.00 43.00 33.00 a 27.00 12.00 4.00
1957 7.00 12.00 30.00 36.00 42.00 44.00 j 44.00 a 45.00 44.00 33.00 32.00 31.00 7.00
1958 32.00 31.00 31.00 35.00 38.00 47.00 49.00 49.00 40.00 37.00 26.00 25.00 25.00
Period of Record Statistics
MEAN 17.43 19.68 25.93 30.93 35.68 40.63 44.07 45.21 40.07 33.46 27.21 22.71 12.15
S.D. 10.95 9.74 5.05 2.71 2.50 2.47 2.32 2.88 3.52 3.64 5.79 5.66 9.05
SKEW -0.48 -0.69 -1.62 0.02 0.33 -0.20 0.87 -0.99 -0.72 -0.70 -1.53 -0.48 -0.45
MAX 32.00 31.00 32.00 36.00 42.00 47.00 50.00 50.00 47.00 40.00 35.00 31.00 25.00
MIN -6.00 -4.00 9.00 26.00 31.00 35.00 41.00 36.00 32.00 23.00 7.00 10.00 -6.00
NO YRS 28 28 28 28 28 27 28 28 28 28 28 28 26