LEWISTON WATER PLANT, IDAHO

Monthly Total Heating Degree Days

(105236)

Base Temperature = 65 F

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.
Months with 5 missing days or less use mean for missing day(s)
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 0.00 z 922.00 681.00 373.00 174.50 75.00 0.00 6.50 157.50 425.00 561.72 a 960.00 4336.22
1895 1070.50 700.00 639.00 299.50 193.00 49.14 a 7.00 3.50 207.50 394.22 a 411.50 n 306.50 u 3563.35
1896 837.50 630.50 627.00 432.41 a 289.69 b 53.89 c 0.00 e 6.00 g 0.00 z 0.00 z 582.50 h 746.00 3616.99
1897 950.00 705.50 784.50 303.00 69.15 e 80.36 b 22.00 2.07 a 0.00 z 0.00 z 747.93 a 0.00 z 3664.51
1898 978.50 596.00 560.50 i 312.93 a 208.50 43.50 0.00 4.50 18.50 0.00 z 694.50 1077.00 3933.93
1899 899.50 992.00 690.50 416.50 206.50 62.50 0.00 z 0.00 70.50 308.00 483.00 807.00 4936.00
1900 731.00 728.50 504.00 353.00 171.02 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2487.52
1901 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1902 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1903 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1904 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1905 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1906 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1907 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1908 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1909 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1910 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1911 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1912 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1913 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1914 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1915 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1916 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1917 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1918 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1919 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1920 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1921 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1922 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1923 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1924 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1925 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1926 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1927 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1928 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1929 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1930 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1931 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1932 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1933 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1934 672.50 565.00 414.00 194.00 81.50 26.00 1.50 0.00 172.00 361.50 524.50 831.00 3843.50
1935 902.50 717.00 684.00 471.00 181.50 22.50 11.50 2.50 44.50 412.50 892.50 951.00 5293.00
1936 883.00 1286.00 657.50 283.50 76.00 31.50 0.00 0.00 94.50 351.00 965.00 889.00 5517.00
1937 1523.50 888.50 554.00 435.00 122.50 32.00 0.00 4.00 62.00 305.50 592.00 855.50 5374.50
1938 858.00 757.50 628.00 391.50 201.00 26.00 0.00 0.00 9.00 286.50 758.00 879.00 4794.50
1939 798.00 809.50 610.50 303.50 105.50 59.00 2.00 0.00 45.00 359.00 706.00 711.00 4509.00
1940 924.50 658.50 499.50 297.00 107.00 10.00 0.50 0.00 42.00 274.00 804.50 924.00 4541.50
1941 902.00 688.00 496.50 297.93 a 142.00 39.50 0.00 16.50 154.00 436.50 668.00 858.00 4698.93
1942 1274.50 776.50 655.00 303.50 247.50 89.00 0.00 12.00 56.50 333.50 691.00 866.00 5305.00
1943 1142.00 729.50 731.50 319.50 262.00 110.50 0.00 9.50 26.90 a 334.50 730.00 950.50 5346.40
1944 934.00 815.00 701.00 313.50 124.50 42.32 b 2.50 4.50 41.00 242.50 672.50 977.00 4870.32
1945 847.50 656.50 682.00 445.00 137.50 76.00 0.00 3.50 178.00 357.00 742.50 952.50 5078.00
1946 871.50 727.00 572.00 328.50 116.00 56.00 0.50 0.00 109.00 524.50 756.50 859.50 4921.00
1947 1075.50 684.50 488.50 321.21 a 42.88 a 30.00 0.00 2.00 67.50 310.50 0.00 z 811.50 3834.09
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 13.00 5.00 101.50 404.50 711.50 870.50 f 1235.50
1949 1516.00 842.50 593.00 262.00 100.50 27.00 0.00 0.00 68.00 518.00 576.50 896.50 5400.00
1950 1420.50 840.00 660.00 420.00 206.00 61.03 a 6.00 0.00 a 89.50 313.21 b 620.50 701.50 5338.24
1951 919.00 732.00 704.00 356.50 162.50 64.00 1.00 14.00 48.10 a 404.00 709.00 992.50 5106.60
1952 754.50 i 732.00 652.60 b 257.50 110.57 a 46.50 3.00 4.00 29.50 280.00 846.50 863.00 3825.17
1953 638.50 636.00 592.00 391.00 237.00 83.00 0.00 0.00 43.00 313.00 598.50 771.50 4303.50
1954 945.00 608.50 684.50 388.00 153.00 97.50 0.00 13.00 65.00 422.00 585.50 949.00 4911.00
1955 935.50 779.50 810.00 494.50 254.50 27.00 18.00 0.00 111.50 334.50 881.00 959.00 5605.00
Period of Record Statistics
MEAN 978.87 757.29 629.49 348.73 160.14 52.62 3.28 3.97 81.23 360.22 700.77 881.54 4987.21
S.D. 229.68 143.67 92.93 71.46 64.51 25.59 5.97 4.91 53.62 71.13 118.98 91.36 459.40
SKEW 1.13 1.87 -0.38 0.18 0.19 0.47 1.98 1.23 0.87 0.68 0.28 -0.19 -0.81
MAX 1523.50 1286.00 810.00 494.50 289.69 110.50 22.00 16.50 207.50 524.50 965.00 1077.00 5605.00
MIN 638.50 565.00 414.00 194.00 42.88 10.00 0.00 0.00 9.00 242.50 483.00 701.50 3843.50
NO YRS 26 28 27 28 28 27 27 27 26 25 25 25 19