LEWISTON WATER PLANT, IDAHO

Monthly Average Temperature (Degrees Fahrenheit)

(105236)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 195512
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
1894 ----- z 32.07 43.03 52.77 60.94 64.85 74.27 74.71 60.73 51.29 46.28 a 34.03 54.09
1895 30.47 40.00 44.39 55.02 59.21 67.48 a 73.44 72.74 58.50 52.38 a 39.28 n 34.35 u 55.36
1896 37.98 43.26 44.77 50.59 a 56.05 b 67.56 c 77.35 e 73.85 g ----- z ----- z 38.52 h 40.94 52.31
1897 34.35 39.80 39.69 54.97 68.46 e 66.29 b 69.34 78.48 a ----- z ----- z 40.07 a ----- z 54.61
1898 33.44 43.71 39.52 i 54.57 a 58.53 66.33 78.61 77.58 68.07 ----- z 41.85 30.26 55.30
1899 35.98 29.57 42.73 51.18 58.42 66.05 ----- z 75.44 63.75 55.06 48.90 38.97 51.46
1900 41.42 38.98 48.74 53.23 59.77 a ----- z ----- z ----- z ----- z ----- z ----- z ----- z 48.43
1901 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1902 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1903 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1904 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1905 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1906 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1907 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1908 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1909 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1910 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1911 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1912 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1913 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1914 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1915 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1916 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1917 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1918 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1919 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1920 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1921 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1922 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1923 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1924 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1925 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1926 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1927 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1928 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1929 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1930 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1931 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1932 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1933 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1934 43.31 44.82 51.65 58.93 65.44 69.25 76.63 74.92 61.37 53.71 47.52 38.19 57.14
1935 35.89 39.39 42.94 49.30 59.74 68.95 76.42 73.81 68.12 51.71 35.25 34.32 52.99
1936 36.52 20.66 43.79 55.98 66.00 71.65 78.77 75.45 63.17 53.68 32.83 36.32 52.90
1937 15.85 33.27 47.13 50.50 61.63 68.08 79.52 72.98 67.60 55.15 45.27 37.40 52.86
1938 37.32 37.95 44.74 51.95 59.69 70.73 80.05 74.61 72.80 56.00 39.73 36.65 55.19
1939 39.26 36.09 45.31 55.30 63.73 66.88 79.21 78.05 67.53 53.42 41.47 42.06 55.69
1940 35.18 42.29 48.89 55.13 64.31 73.78 78.45 76.61 68.53 56.16 38.18 35.19 56.06
1941 35.90 40.43 48.98 55.07 a 62.10 67.32 79.90 74.26 60.42 50.92 42.73 37.32 54.61
1942 23.89 37.27 43.87 55.00 57.94 63.27 77.50 77.27 65.50 54.29 41.97 37.06 52.90
1943 28.16 38.95 41.40 54.47 56.74 63.07 75.58 72.60 67.62 a 55.44 40.67 34.34 52.42
1944 34.87 36.90 42.39 54.58 62.61 66.82 b 75.58 72.39 68.93 57.18 42.58 33.48 54.03
1945 37.66 41.55 43.00 50.17 61.45 65.37 76.87 74.58 60.55 53.48 40.25 34.27 53.27
1946 36.89 39.04 46.55 54.28 61.61 65.72 75.19 75.24 63.02 48.08 39.78 37.27 53.56
1947 30.31 40.55 49.24 54.29 a 65.72 a 66.18 74.95 72.24 65.27 55.19 ----- z 38.82 55.71
1948 ----- z ----- z ----- z ----- z ----- z ----- z 70.63 70.40 63.77 51.95 41.28 30.18 f 59.61
1949 16.10 34.91 45.87 56.27 63.42 68.03 73.79 74.58 65.53 48.29 45.78 36.08 52.39
1950 19.18 35.00 43.71 51.00 58.53 66.00 a 74.11 74.72 a 65.28 54.90 b 44.32 42.37 52.43
1951 35.35 38.86 42.29 53.12 60.71 65.10 75.56 72.55 65.62 a 51.97 41.37 32.98 52.96
1952 30.70 i 39.76 43.95 b 56.65 62.25 a 66.77 74.84 74.19 67.22 55.97 36.78 37.16 55.96
1953 44.40 42.29 45.90 52.02 57.55 62.82 74.58 74.23 67.95 54.90 45.05 40.11 55.15
1954 34.52 43.27 42.92 52.07 61.06 63.92 74.60 70.27 64.92 51.39 45.48 34.39 53.23
1955 34.82 37.16 38.87 48.52 57.05 68.92 73.69 74.73 65.33 54.21 35.63 34.06 51.92
Period of Record Statistics
MEAN 33.42 38.14 44.69 53.46 61.09 66.93 75.91 74.43 65.27 53.47 41.64 36.56 53.77
S.D. 7.41 4.97 3.00 2.46 3.10 2.55 2.66 2.06 3.26 2.34 3.97 2.95 1.46
SKEW -1.13 -1.67 0.38 -0.12 0.44 0.68 -0.40 0.02 -0.11 -0.70 -0.28 0.19 0.87
MAX 44.40 44.82 51.65 58.93 68.46 73.78 80.05 78.48 72.80 57.18 48.90 42.37 57.14
MIN 15.85 20.66 38.87 48.52 56.05 62.82 69.34 70.27 58.50 48.08 32.83 30.26 51.92
NO YRS 26 28 27 28 28 27 27 27 26 25 25 25 19