LEWISTON WATER PLANT, IDAHO

Monthly Average Maximum 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 40.32 53.97 65.80 74.77 78.87 93.55 93.84 75.80 64.00 55.52 a 42.39 67.17
1895 39.32 50.46 57.77 70.70 74.32 84.52 a 90.35 92.32 73.57 70.37 a 49.77 44.03 66.46
1896 46.97 54.38 57.45 63.17 a 68.77 a 85.17 a 95.23 e 89.58 e ----- z ----- z 45.30 g 48.65 67.71
1897 40.35 48.64 50.23 70.97 83.00 e 80.29 b 87.65 99.97 a ----- z ----- z 47.59 a 43.10 65.18
1898 38.26 52.46 48.86 i 69.34 a 73.74 81.53 94.68 93.81 80.77 ----- z 51.23 36.87 67.27
1899 42.29 35.18 51.00 61.80 65.29 75.97 ----- z 92.71 77.57 67.10 59.47 46.29 61.33
1900 49.68 47.29 59.94 67.57 74.10 a ----- z ----- z ----- z ----- z ----- z ----- z ----- z 59.71
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 50.58 55.04 64.90 74.50 81.26 83.07 93.39 93.58 78.33 65.23 55.23 44.97 70.01
1935 44.00 49.79 53.48 61.50 76.42 84.33 93.32 91.55 87.23 65.32 44.40 40.26 65.97
1936 43.81 29.07 55.10 69.77 81.97 86.00 96.16 93.39 80.00 70.52 44.13 44.42 66.19
1937 24.42 42.57 59.42 61.50 77.45 82.77 96.19 89.65 84.60 68.00 53.70 43.87 65.34
1938 43.65 46.29 54.94 65.03 74.90 87.67 97.61 92.55 89.93 66.90 47.83 43.29 67.55
1939 46.84 45.32 56.45 69.50 79.23 80.47 95.52 97.16 84.57 66.23 53.73 49.39 68.70
1940 41.65 50.14 60.55 66.93 79.94 90.27 94.35 95.42 80.73 66.42 46.00 42.00 67.87
1941 43.42 51.11 62.03 67.34 a 73.74 79.07 96.45 89.48 72.23 61.61 51.73 44.87 66.09
1942 31.52 45.61 56.65 69.30 70.13 76.10 95.06 95.90 83.20 69.19 50.13 43.58 65.53
1943 35.29 51.50 53.29 66.83 69.65 76.43 93.16 90.61 87.52 a 69.55 49.43 40.61 65.32
1944 45.68 46.79 54.42 67.97 77.55 81.37 93.71 90.90 87.27 73.97 51.67 38.77 67.50
1945 44.13 50.54 53.23 62.27 76.39 80.33 96.65 94.16 75.43 67.35 48.37 40.58 65.78
1946 45.26 48.71 57.71 68.87 78.68 80.03 93.23 94.16 77.77 60.90 48.47 44.13 66.49
1947 39.26 52.32 62.90 68.59 a 81.77 79.47 92.74 90.23 80.10 65.58 ----- z 43.42 68.76
1948 ----- z ----- z ----- z ----- z ----- z ----- z 86.58 86.32 80.27 66.84 49.77 37.14 b 67.82
1949 24.48 43.39 57.74 71.93 79.26 84.87 91.29 92.10 81.37 61.26 55.43 43.06 65.52
1950 26.94 42.71 52.55 64.00 74.06 80.40 91.65 93.45 82.53 65.87 52.00 47.87 64.50
1951 41.90 48.25 52.55 70.27 76.65 81.03 94.23 90.10 83.52 a 61.81 49.13 39.13 65.71
1952 37.36 i 47.79 54.81 72.80 76.26 80.67 92.81 91.48 85.17 72.81 46.63 43.77 69.55
1953 50.81 51.57 58.06 64.43 72.29 76.57 93.03 90.61 85.70 69.55 54.10 46.84 67.80
1954 41.29 51.64 55.19 64.10 77.10 78.00 90.97 85.35 80.17 64.94 54.27 42.52 65.46
1955 40.42 45.82 48.58 59.43 69.84 83.47 87.84 92.84 80.50 64.48 41.90 40.45 62.96
Period of Record Statistics
MEAN 40.85 47.31 56.11 67.01 75.66 81.43 93.24 92.26 81.38 66.63 50.45 43.08 66.34
S.D. 7.20 5.67 3.90 3.84 4.34 3.57 2.78 3.02 4.46 3.40 4.10 3.15 1.56
SKEW -1.00 -1.45 0.31 -0.13 -0.38 0.47 -0.77 0.07 -0.13 0.21 -0.01 -0.03 0.36
MAX 50.81 55.04 64.90 74.50 83.00 90.27 97.61 99.97 89.93 73.97 59.47 49.39 70.01
MIN 24.42 29.07 48.58 59.43 65.29 75.97 86.58 85.35 72.23 60.90 41.90 36.87 62.96
NO YRS 26 28 27 28 28 27 27 28 26 25 26 28 20