CHELAN, WASHINGTON

Monthly Total Cooling Degree Days

(454430)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 195804
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
1891 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 311.00 305.50 52.00 0.00 0.00 z 0.00 a 668.50
1892 0.00 0.00 z 0.00 0.00 16.50 158.00 200.00 248.50 40.50 0.00 0.00 z 0.00 z 663.50
1893 0.00 0.00 a 0.00 0.00 2.58 a 19.00 246.40 b 274.50 28.00 0.00 0.00 b 0.00 570.48
1894 0.00 0.00 0.00 0.00 60.00 75.00 317.50 355.50 26.00 0.00 0.00 0.00 834.00
1895 0.00 0.00 0.00 0.00 4.00 99.50 186.00 208.50 9.00 0.00 0.00 0.00 507.00
1896 0.00 0.00 0.00 0.00 0.00 111.00 314.50 188.50 26.00 0.00 0.00 0.00 640.00
1897 0.00 0.00 0.00 0.00 42.50 67.00 128.50 310.00 15.50 0.00 0.00 0.00 563.50
1898 0.00 0.00 0.00 0.00 11.50 53.00 272.00 344.00 26.50 0.00 z 0.00 0.00 707.00
1899 0.00 0.00 0.00 0.00 2.00 36.00 256.50 76.50 69.50 0.00 0.00 b 0.00 440.50
1900 0.00 0.00 0.00 0.00 9.00 152.00 273.50 116.50 26.00 0.00 0.00 0.00 577.00
1901 0.00 a 0.00 0.00 a 0.00 z 19.00 21.50 155.50 326.50 2.50 0.00 0.00 a 0.00 525.00
1902 0.00 0.00 0.00 0.00 11.50 36.50 152.79 c 271.50 34.00 0.00 0.00 0.00 506.29
1903 0.00 0.00 k 0.00 0.00 8.50 157.00 168.00 193.00 14.00 0.00 c 0.00 a 0.00 540.50
1904 0.00 0.00 0.00 0.00 11.50 106.50 292.50 320.00 80.50 5.17 a 0.00 0.00 b 816.17
1905 0.00 b 0.00 a 0.00 a 2.50 8.50 64.00 295.00 223.00 44.00 0.00 0.00 0.00 637.00
1906 0.00 0.00 0.00 5.00 17.00 29.50 478.50 287.50 74.00 2.00 0.00 0.00 893.50
1907 0.00 0.00 0.00 0.00 29.00 56.00 228.50 53.50 o 41.50 0.00 0.00 0.00 a 355.00
1908 0.00 0.00 0.00 0.00 0.00 94.50 305.00 278.50 82.50 0.00 0.00 0.00 760.50
1909 0.00 b 0.00 0.00 a 0.00 14.00 60.50 170.50 189.50 107.00 0.00 0.00 0.00 541.50
1910 0.00 0.00 0.00 7.00 19.00 f 57.00 261.00 153.50 18.00 0.00 0.00 0.00 496.50
1911 0.00 0.00 0.00 0.00 12.00 88.50 266.00 188.00 31.03 a 0.00 0.00 b 0.00 b 585.53
1912 0.00 0.00 0.00 0.00 9.00 135.00 220.50 155.00 18.50 0.00 0.00 0.00 538.00
1913 0.00 0.00 0.00 0.00 18.00 63.50 228.00 257.50 18.00 0.00 0.00 0.00 585.00
1914 0.00 0.00 0.00 0.00 15.00 89.50 341.50 298.00 22.50 0.00 0.00 0.00 766.50
1915 0.00 0.00 0.00 2.00 7.50 102.41 a 248.50 416.50 21.50 0.00 0.00 0.00 798.41
1916 0.00 0.00 0.00 0.00 0.50 56.00 104.50 245.00 42.00 0.00 0.00 0.00 448.00
1917 0.00 0.00 0.00 0.00 9.00 39.50 299.00 327.50 56.00 14.50 0.00 0.00 745.50
1918 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 b 0.00 a 0.00 c 0.00
1919 0.00 s 0.00 0.00 0.00 a 1.03 a 21.43 b 209.25 c 197.92 e 11.90 a 0.00 a 0.00 0.00 k 441.53
1920 0.00 0.00 0.00 z 0.00 z 0.00 z 33.50 i 361.09 d 279.00 b 17.00 f 0.00 d 0.00 e 0.00 c 640.09
1921 0.00 a 0.00 0.00 a 0.00 d 5.00 k 0.00 z 0.00 z 0.00 z 0.00 b 0.00 k 0.00 0.00 f 0.00
1922 0.00 0.00 0.00 0.00 g 11.92 e 181.50 335.26 d 237.31 b 50.40 e 0.00 i 0.00 z 0.00 z 816.39
1923 0.00 z 0.00 a 0.00 a 0.00 g 5.50 81.00 332.00 293.50 114.50 2.14 b 0.00 d 0.00 a 828.64
1924 0.00 0.00 0.00 0.00 110.05 a 109.00 351.50 301.50 117.50 0.00 0.00 0.00 989.55
1925 0.00 0.00 0.00 0.00 35.50 191.00 428.50 259.50 50.50 0.00 0.00 0.00 965.00
1926 0.00 0.00 0.00 16.50 16.00 244.50 431.00 269.00 34.50 0.00 0.00 0.00 1011.50
1927 0.00 0.00 0.00 0.00 3.00 128.50 353.00 267.00 12.50 0.00 0.00 0.00 764.00
1928 0.00 0.00 0.00 0.00 68.00 118.50 361.00 252.00 68.50 0.00 0.00 0.00 868.00
1929 0.00 0.00 0.00 0.00 33.50 81.00 268.50 349.00 59.50 0.00 0.00 0.00 a 791.50
1930 0.00 0.00 0.00 0.00 12.00 51.50 311.50 304.50 75.00 0.00 0.00 0.00 754.50
1931 0.00 0.00 a 0.00 4.00 54.77 a 90.50 336.50 296.50 40.71 b 0.00 d 0.00 0.00 822.98
1932 0.00 0.00 a 0.00 0.00 d 1.00 169.14 a 121.00 f 222.68 a 52.00 7.00 0.00 0.00 d 451.82
1933 0.00 b 0.00 c 0.00 b 0.00 2.00 72.00 249.50 282.10 a 16.00 0.00 0.00 0.00 621.60
1934 0.00 f 0.00 b 0.00 8.28 a 56.66 b 155.56 c 198.00 f 303.91 c 30.00 e 0.00 e 0.00 b 0.00 554.40
1935 0.00 b 0.00 0.00 0.00 19.50 48.00 f 215.00 152.86 b 75.50 0.00 a 0.00 b 0.00 l 462.86
1936 0.00 0.00 a 0.00 a 1.00 64.14 b 86.38 a 249.50 239.00 50.36 b 0.00 0.00 0.00 690.37
1937 0.00 0.00 0.00 0.00 7.00 64.00 284.50 152.50 69.50 0.00 0.00 c 0.00 577.50
1938 0.00 0.00 0.00 0.00 34.00 142.00 347.50 158.50 89.00 0.00 0.00 0.00 771.00
1939 0.00 0.00 0.00 4.00 21.00 65.50 287.00 284.68 a 44.00 0.00 0.00 0.00 706.18
1940 0.00 d 0.00 0.00 b 0.00 50.38 c 191.00 286.48 b 258.00 91.50 0.00 d 0.00 0.00 877.36
1941 0.00 a 0.00 0.00 b 0.00 21.00 56.50 308.00 173.00 0.00 0.00 0.00 0.00 a 558.50
1942 0.00 a 0.00 0.00 0.00 3.50 45.50 297.00 315.00 58.97 a 0.00 0.00 0.00 a 719.97
1943 0.00 b 0.00 0.00 0.00 5.50 35.00 257.50 165.16 b 55.50 0.00 d 0.00 0.00 a 518.66
1944 0.00 0.00 0.00 0.00 13.50 88.50 259.50 119.50 53.79 a 0.00 0.00 0.00 534.79
1945 0.00 0.00 a 0.00 a 0.00 a 20.00 72.41 a 288.82 a 227.33 a 21.21 a 0.00 a 0.00 0.00 629.77
1946 0.00 d 0.00 d 0.00 h 0.00 g 12.50 46.50 205.50 187.50 10.50 0.00 0.00 0.00 462.50
1947 0.00 0.00 0.00 0.00 57.00 42.00 174.00 104.50 10.00 0.00 0.00 0.00 j 387.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 99.50 109.00 38.75 a 30.00 0.00 0.00 0.00 277.25
1949 0.00 0.00 0.00 a 0.00 52.50 81.00 202.50 200.50 67.50 0.00 0.00 0.00 604.00
1950 0.00 0.00 0.00 0.00 3.50 55.50 227.50 211.50 57.50 0.00 0.00 0.00 555.50
1951 0.00 0.00 0.00 0.00 8.00 60.50 248.00 238.00 22.50 0.00 0.00 0.00 577.00
1952 0.00 0.00 0.00 0.00 16.00 60.00 260.50 245.50 54.50 0.00 0.00 0.00 636.50
1953 0.00 0.00 0.00 0.00 5.50 15.50 215.00 171.00 51.50 0.00 0.00 0.00 458.50
1954 0.00 0.00 0.00 a 0.00 10.50 31.50 156.50 138.50 18.00 0.00 0.00 0.00 355.00
1955 0.00 0.00 0.00 0.00 0.00 84.00 153.50 199.00 86.50 0.00 0.00 0.00 523.00
1956 0.00 0.00 0.00 0.00 45.00 23.00 284.50 234.00 33.50 0.00 0.00 0.00 620.00
1957 0.00 0.00 0.00 0.00 42.00 95.00 175.00 111.00 51.50 0.00 0.00 0.00 474.50
1958 0.00 0.00 0.00 0.00 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
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.84 20.67 84.90 262.57 234.36 44.04 0.48 0.00 0.00 661.06
S.D. 0.00 0.00 0.00 2.65 21.96 49.20 76.78 74.67 28.15 2.11 0.00 0.00 154.77
SKEW 0.00 0.00 0.00 4.20 1.71 1.01 0.22 -0.26 0.63 5.36 0.00 0.00 0.42
MAX 0.00 0.00 0.00 16.50 110.05 244.50 478.50 416.50 117.50 14.50 0.00 0.00 1011.50
MIN 0.00 0.00 0.00 0.00 0.00 15.50 104.50 38.75 0.00 0.00 0.00 0.00 355.00
NO YRS 63 64 63 60 61 62 63 64 65 64 64 61 48