The Monthly rainfall is the total of all available Daily rainfall for the month. Observations of Daily rainfall are nominally made at 9 am local clock time and record the total for the previous 24 hours. Rainfall includes all forms of precipiation that reach the ground, such as rain, drizzle, hail and snow. About monthly rainfall
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Graph | |||||||||||||
| 1873 | 52.1 | 45.0 | 27.9 | 2.8 | |||||||||
| 1874 | 60.7 | 0.8 | 101.5 | 17.4 | 31.3 | 46.1 | 40.7 | 51.3 | 66.3 | 38.0 | 17.0 | 23.7 | 494.8 |
| 1875 | 5.6 | 62.4 | 6.3 | 38.9 | 74.9 | 78.3 | 20.7 | 50.1 | 27.5 | 32.4 | 35.2 | 60.4 | 492.7 |
| 1876 | 23.0 | 41.7 | 4.3 | 36.1 | 41.6 | 19.9 | 21.0 | 24.2 | 32.5 | 55.8 | 101.5 | 12.8 | 414.4 |
| 1877 | 6.4 | 19.1 | 21.1 | 4.4 | 134.9 | 23.6 | 6.6 | 26.1 | 44.7 | 15.5 | 9.0 | 4.0 | 315.4 |
| 1878 | 0.0 | 63.9 | 121.1 | 46.7 | 11.5 | 56.1 | 39.3 | 38.1 | 21.8 | 29.1 | 29.1 | 7.8 | 464.5 |
| 1879 | 4.8 | 5.6 | 4.9 | 32.3 | 60.4 | 28.3 | 38.0 | 33.9 | 41.7 | 57.7 | 31.2 | 13.5 | 352.3 |
| 1880 | 5.1 | 22.9 | 47.3 | 63.6 | 26.7 | 39.8 | 19.2 | 26.5 | 64.2 | 29.8 | 2.1 | 6.1 | 353.3 |
| 1881 | 13.2 | 0.8 | 56.1 | 19.6 | 47.0 | 45.5 | 20.4 | 31.6 | 18.7 | 28.7 | 28.8 | 16.8 | 327.2 |
| 1882 | 2.3 | 0.0 | 8.1 | 51.7 | 54.1 | 18.3 | 54.9 | 44.9 | 27.2 | 49.3 | 39.4 | 20.9 | 371.1 |
| 1883 | 1.3 | 32.1 | 13.9 | 17.0 | 89.1 | 78.7 | 51.8 | 62.5 | 40.8 | 47.4 | 60.7 | 59.6 | 554.9 |
| 1884 | 31.9 | 5.4 | 44.9 | 22.7 | 37.2 | 73.7 | 6.3 | 30.5 | 55.8 | 23.6 | 21.6 | 36.9 | 390.5 |
| 1885 | 7.5 | 21.4 | 15.2 | 16.6 | 32.6 | 48.5 | 52.0 | 40.1 | 61.6 | 24.1 | 2.6 | 60.1 | 382.3 |
| 1886 | 107.4 | 37.9 | 7.9 | 9.4 | 12.4 | 17.1 | 52.6 | 119.0 | 45.1 | 38.7 | 28.4 | 16.0 | 491.9 |
| 1887 | 5.7 | 16.0 | 5.1 | 58.2 | 33.6 | 55.9 | 52.0 | 36.7 | 44.4 | 62.7 | 76.5 | 39.3 | 486.1 |
| 1888 | 21.4 | 3.6 | 1.8 | 28.9 | 47.4 | 40.5 | 38.6 | 34.8 | 23.6 | 23.3 | 11.7 | 8.4 | 284.0 |
| 1889 | 63.5 | 13.7 | 7.6 | 89.8 | 59.1 | 156.7 | 19.7 | 73.2 | 43.9 | 69.4 | 78.3 | 2.0 | 676.9 |
| 1890 | 27.0 | 0.0 | 33.1 | 42.2 | 60.9 | 97.2 | 78.6 | 49.4 | 50.1 | 57.9 | 30.7 | 13.6 | 540.7 |
| 1891 | 6.3 | 0.0 | 24.4 | 63.8 | 14.8 | 51.6 | 52.6 | 15.0 | 21.3 | 90.2 | 29.8 | 34.5 | 404.3 |
| 1892 | 9.7 | 3.0 | 14.4 | 48.8 | 41.8 | 45.2 | 56.4 | 46.8 | 54.5 | 48.4 | 57.4 | 56.2 | 482.6 |
| 1893 | 3.4 | 4.6 | 1.8 | 69.5 | 148.0 | 73.7 | 48.2 | 50.2 | 42.7 | 68.4 | 51.0 | 6.9 | 568.4 |
| 1894 | 23.6 | 1.8 | 14.3 | 18.4 | 26.2 | 52.9 | 65.6 | 78.7 | 44.2 | 135.8 | 8.6 | 98.0 | 568.1 |
| 1895 | 32.0 | 0.3 | 23.0 | 62.7 | 16.4 | 33.3 | 41.3 | 57.9 | 27.5 | 31.3 | 0.0 | 45.7 | 371.4 |
| 1896 | 42.1 | 16.2 | 26.1 | 60.8 | 34.5 | 14.8 | 26.2 | 23.7 | 20.9 | 2.3 | 19.3 | 33.1 | 320.0 |
| 1897 | 32.2 | 15.8 | 26.6 | 16.2 | 16.1 | 26.3 | 27.9 | 61.4 | 49.8 | 30.4 | 28.0 | 6.4 | 337.1 |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| 1898 | 0.0 | 12.7 | 5.4 | 37.3 | 51.3 | 100.1 | 61.6 | 42.7 | 50.4 | 45.2 | 28.1 | 41.9 | 476.7 |
| 1899 | 36.1 | 49.0 | 30.3 | 36.2 | 31.0 | 92.8 | 3.7 | 21.5 | 25.0 | 27.4 | 42.3 | 7.2 | 402.5 |
| 1900 | 9.2 | 2.0 | 47.6 | 51.1 | 83.8 | 83.5 | 16.9 | 81.9 | 30.4 | 16.1 | 11.2 | 27.3 | 461.0 |
| 1901 | 18.5 | 3.3 | 16.6 | 30.1 | 6.5 | 73.0 | 29.9 | 22.0 | 84.1 | 56.5 | 11.2 | 22.3 | 374.0 |
| 1902 | 8.6 | 6.6 | 21.9 | 0.3 | 18.2 | 38.7 | 10.4 | 16.0 | 16.5 | 24.6 | 10.7 | 87.4 | 259.9 |
| 1903 | 8.4 | 12.2 | 40.9 | 87.8 | 51.6 | 36.3 | 54.1 | 40.9 | 97.0 | 33.0 | 53.3 | 42.8 | 558.3 |
| 1904 | 37.7 | 42.7 | 6.6 | 18.6 | 45.0 | 36.6 | 48.4 | 47.2 | 19.0 | 112.8 | 28.2 | 0.0 | 442.8 |
| 1905 | 22.8 | 21.3 | 2.5 | 59.2 | 39.0 | 81.0 | 60.6 | 29.8 | 38.7 | 69.1 | 11.8 | 5.4 | 441.2 |
| 1906 | 2.8 | 34.1 | 88.4 | 9.6 | 91.0 | 87.6 | 54.9 | 47.2 | 59.0 | 53.9 | 117.0 | 13.9 | 659.4 |
| 1907 | 0.0 | 22.1 | 5.8 | 50.6 | 74.8 | 47.3 | 68.7 | 73.3 | 14.9 | 15.2 | 39.0 | 29.0 | 440.7 |
| 1908 | 13.7 | 10.0 | 16.6 | 2.6 | 85.0 | 62.9 | 23.9 | 42.4 | 105.1 | 18.2 | 17.5 | 11.2 | 409.1 |
| 1909 | 36.8 | 12.2 | 41.1 | 38.4 | 50.0 | 92.6 | 63.5 | 126.4 | 18.3 | 30.7 | 23.1 | 10.5 | 543.6 |
| 1910 | 7.2 | 6.3 | 119.9 | 6.6 | 67.5 | 76.6 | 91.1 | 43.3 | 91.6 | 31.3 | 67.5 | 15.8 | 624.7 |
| 1911 | 6.8 | 140.4 | 36.9 | 10.2 | 71.8 | 66.1 | 46.0 | 12.3 | 81.0 | 11.5 | 0.5 | 76.7 | 560.2 |
| 1912 | 0.0 | 8.1 | 15.7 | 14.5 | 8.2 | 58.7 | 28.0 | 33.6 | 97.2 | 17.8 | 49.7 | 54.5 | 386.0 |
| 1913 | 4.1 | 28.0 | 59.7 | 13.2 | 35.2 | 10.8 | 26.1 | 45.0 | 87.9 | 61.2 | 25.9 | 16.5 | 413.6 |
| 1914 | 13.3 | 12.0 | 8.6 | 55.3 | 23.9 | 15.9 | 20.2 | 6.6 | 5.1 | 1.0 | 53.2 | 77.0 | 292.1 |
| 1915 | 18.8 | 0.8 | 3.0 | 31.3 | 38.7 | 91.5 | 44.1 | 72.9 | 108.1 | 21.9 | 10.0 | 15.8 | 456.9 |
| 1916 | 21.4 | 4.9 | 0.0 | 12.1 | 21.8 | 98.9 | 60.8 | 81.0 | 99.7 | 59.1 | 76.0 | 89.7 | 625.4 |
| 1917 | 6.1 | 72.7 | 27.7 | 13.0 | 68.1 | 33.5 | 70.2 | 51.9 | 75.2 | 68.0 | 11.1 | 18.1 | 515.6 |
| 1918 | 22.9 | 20.3 | 22.5 | 71.9 | 61.3 | 60.9 | 33.3 | 67.7 | 12.3 | 48.9 | 4.0 | 11.2 | 437.2 |
| 1919 | 2.0 | 131.6 | 23.9 | 6.3 | 60.0 | 37.6 | 40.2 | 19.9 | 39.1 | 21.2 | 4.4 | 20.6 | 406.8 |
| 1920 | 4.6 | 0.8 | 21.8 | 4.0 | 36.6 | 71.1 | 51.9 | 93.9 | 66.8 | 34.3 | 55.1 | 16.5 | 457.4 |
| 1921 | 31.8 | 47.5 | 22.6 | 16.3 | 67.5 | 28.7 | 59.2 | 59.6 | 67.2 | 34.0 | 46.2 | 12.5 | 493.1 |
| 1922 | 19.7 | 23.3 | 0.5 | 20.6 | 70.9 | 49.6 | 43.0 | 49.6 | 75.3 | 48.7 | 6.6 | 61.7 | 469.5 |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| 1923 | 10.1 | 2.8 | 0.0 | 0.0 | 73.5 | 120.2 | 92.9 | 35.9 | 47.4 | 43.2 | 27.8 | 44.8 | 498.6 |
| 1924 | 13.2 | 63.2 | 34.9 | 12.1 | 22.2 | 46.8 | 19.2 | 67.0 | 69.2 | 56.0 | 135.6 | 4.4 | 543.8 |
| 1925 | 17.3 | 17.7 | 6.1 | 22.0 | 89.5 | 42.7 | 40.2 | 32.2 | 51.3 | 10.3 | 24.2 | 5.9 | 359.4 |
| 1926 | 6.4 | 8.9 | 9.1 | 62.0 | 91.6 | 46.0 | 75.5 | 53.7 | 32.8 | 39.5 | 8.4 | 9.2 | 443.1 |
| 1927 | 7.4 | 14.3 | 18.1 | 1.4 | 62.2 | 25.4 | 50.0 | 64.2 | 24.1 | 9.3 | 19.1 | 24.9 | 320.4 |
| 1928 | 44.6 | 97.3 | 40.6 | 24.9 | 30.8 | 41.7 | 35.4 | 7.5 | 46.7 | 80.3 | 3.1 | 5.1 | 458.0 |
| 1929 | 27.2 | 17.0 | 30.6 | 31.8 | 25.3 | 47.4 | 35.6 | 42.9 | 27.9 | 28.7 | 12.1 | 82.9 | 409.4 |
| 1930 | 0.0 | 32.1 | 1.6 | 24.7 | 25.5 | 8.1 | 59.6 | 77.9 | 37.6 | 79.0 | 51.1 | 145.8 | 543.0 |
| 1931 | 10.1 | 1.1 | 31.0 | 109.9 | 95.7 | 110.3 | 45.1 | 49.2 | 35.9 | 9.3 | 48.3 | 4.4 | 550.3 |
| 1932 | 0.8 | 63.5 | 46.2 | 83.2 | 18.3 | 39.9 | 50.7 | 56.6 | 23.5 | 31.7 | 14.2 | 26.5 | 455.1 |
| 1933 | 62.6 | 0.0 | 23.9 | 44.0 | 81.9 | 38.7 | 23.6 | 50.4 | 69.9 | 25.0 | 41.5 | 34.6 | 496.1 |
| 1934 | 6.6 | 9.7 | 5.8 | 51.6 | 0.0 | 17.5 | 37.0 | 44.1 | 59.2 | 103.9 | 76.4 | 1.1 | 412.9 |
| 1935 | 14.9 | 8.3 | 30.6 | 30.1 | 19.3 | 53.6 | 63.3 | 58.7 | 54.7 | 21.0 | 17.0 | 21.3 | 392.8 |
| 1936 | 63.5 | 2.6 | 9.9 | 7.0 | 26.6 | 79.7 | 123.8 | 45.6 | 16.5 | 44.4 | 10.9 | 61.6 | 492.1 |
| 1937 | 54.0 | 35.6 | 22.1 | 4.8 | 23.7 | 43.5 | 15.3 | 41.0 | 35.9 | 68.6 | 9.9 | 66.7 | 421.1 |
| 1938 | 32.6 | 22.3 | 1.0 | 31.1 | 11.8 | 54.8 | 54.4 | 12.8 | 11.7 | 4.9 | 15.8 | 0.8 | 254.0 |
| 1939 | 34.8 | 31.5 | 3.0 | 55.7 | 70.7 | 53.7 | 28.0 | 98.8 | 26.5 | 26.8 | 64.6 | 6.6 | 500.7 |
| 1940 | 18.6 | 4.9 | 8.1 | 70.5 | 27.0 | 18.2 | 38.5 | 16.5 | 23.1 | 21.7 | 37.7 | 23.3 | 308.1 |
| 1941 | 116.6 | 9.4 | 56.1 | 31.5 | 12.9 | 51.7 | 83.3 | 25.3 | 67.6 | 28.5 | 26.8 | 11.5 | 521.2 |
| 1942 | 23.6 | 17.3 | 6.9 | 42.3 | 87.3 | 63.6 | 48.5 | 74.5 | 70.1 | 75.2 | 77.8 | 16.2 | 603.3 |
| 1943 | 12.2 | 41.4 | 6.3 | 26.7 | 20.3 | 37.6 | 38.1 | 51.0 | 58.6 | 26.1 | 12.0 | 8.4 | 338.7 |
| 1944 | 28.2 | 10.5 | 3.1 | 38.3 | 37.8 | 4.4 | 33.0 | 1.1 | 12.8 | 36.2 | 22.3 | 31.2 | 258.9 |
| 1945 | 13.4 | 95.4 | 2.0 | 3.3 | 33.2 | 67.7 | 37.3 | 82.2 | 22.6 | 28.0 | 35.1 | 18.8 | 439.0 |
| 1946 | 80.2 | 83.5 | 73.3 | 14.7 | 16.8 | 54.9 | 51.8 | 25.6 | 16.7 | 12.2 | 13.0 | 44.8 | 487.5 |
| 1947 | 2.0 | 20.3 | 79.2 | 22.4 | 8.6 | 50.5 | 63.5 | 34.8 | 40.1 | 86.9 | 38.4 | 63.8 | 510.5 |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| 1948 | 4.6 | 15.5 | 2.0 | 92.7 | 47.8 | 67.6 | 27.2 | 25.7 | 21.1 | 102.4 | 25.7 | 80.5 | 512.8 |
| 1949 | 5.1 | 84.8 | 9.4 | 0.5 | 40.6 | 18.8 | 39.6 | 14.7 | 59.2 | 85.6 | 42.4 | 1.5 | 402.2 |
| 1950 | 0.0 | 81.3 | 55.8 | 11.4 | 96.9 | 5.6 | 31.5 | 30.5 | 51.6 | 32.0 | 13.7 | 19.6 | 429.9 |
| 1951 | 13.2 | 47.5 | 5.1 | 31.5 | 53.3 | 59.7 | 46.7 | 62.2 | 11.2 | 64.5 | 8.4 | 22.9 | 426.2 |
| 1952 | 63.0 | 32.0 | 13.2 | 18.8 | 67.8 | 71.2 | 22.2 | 55.1 | 32.5 | 70.5 | 66.0 | 34.4 | 546.7 |
| 1953 | 62.6 | 0.5 | 5.6 | 30.4 | 17.9 | 83.9 | 72.5 | 79.1 | 58.7 | 46.9 | 54.2 | 37.2 | 549.5 |
| 1954 | 42.2 | 0.0 | 5.8 | 93.5 | 15.3 | 27.1 | 48.0 | 37.0 | 22.1 | 36.9 | 45.8 | 51.3 | 425.0 |
| 1955 | 1.1 | 42.8 | 52.3 | 21.0 | 68.4 | 125.7 | 51.1 | 102.4 | 46.6 | 75.6 | 27.8 | 10.2 | 625.0 |
| 1956 | 16.9 | 0.0 | 64.5 | 65.1 | 90.5 | 69.2 | 69.0 | 59.7 | 56.6 | 41.7 | 16.0 | 8.6 | 557.8 |
| 1957 | 3.3 | 117.6 | 30.4 | 14.1 | 18.5 | 47.3 | 23.4 | 21.4 | 19.1 | 32.3 | 20.3 | 14.1 | 361.8 |
| 1958 | 7.6 | 10.7 | 8.5 | 8.2 | 81.0 | 8.7 | 77.0 | 73.9 | 35.8 | 50.3 | 33.4 | 3.3 | 398.4 |
| 1959 | 28.0 | 56.9 | 39.4 | 7.7 | 7.7 | 16.0 | 12.6 | 62.6 | 29.5 | 37.0 | 34.8 | 35.2 | 367.4 |
| 1960 | 26.9 | 35.3 | 45.6 | 54.6 | 101.1 | 29.5 | 40.7 | 69.6 | 84.6 | 22.9 | 65.3 | 15.3 | 591.4 |
| 1961 | 2.5 | 20.1 | 22.8 | 69.9 | 21.5 | 25.4 | 49.3 | 17.0 | 35.8 | 30.2 | 31.3 | 38.8 | 364.6 |
| 1962 | 3.8 | 9.4 | 17.1 | 5.3 | 49.9 | 62.6 | 19.7 | 50.3 | 60.0 | 54.2 | 15.6 | 24.3 | 372.2 |
| 1963 | 77.2 | 3.8 | 30.7 | 3.1 | 55.9 | 56.1 | 53.1 | 60.6 | 56.6 | 25.9 | 4.8 | 5.9 | 433.7 |
| 1964 | 4.8 | 23.2 | 9.5 | 41.0 | 15.5 | 52.3 | 109.0 | 56.2 | 87.8 | 88.5 | 91.8 | 24.3 | 603.9 |
| 1965 | 0.8 | 0.3 | 5.4 | 19.3 | 54.1 | 27.5 | 60.4 | 62.5 | 14.0 | 12.5 | 31.8 | 35.6 | 324.2 |
| 1966 | 12.3 | 29.7 | 15.8 | 7.8 | 18.8 | 22.0 | 61.0 | 27.9 | 60.4 | 49.7 | 13.9 | 33.7 | 353.0 |
| 1967 | 5.0 | 32.5 | 4.6 | 4.4 | 27.8 | 5.6 | 46.6 | 38.1 | 11.1 | 5.6 | 8.6 | 24.4 | 214.3 |
| 1968 | 21.6 | 7.1 | 33.4 | 31.5 | 62.0 | 43.7 | 46.7 | 51.8 | 23.3 | 59.9 | 42.5 | 10.2 | 433.7 |
| 1969 | 17.6 | 43.2 | 47.0 | 19.6 | 49.6 | 8.2 | 55.4 | 54.4 | 35.3 | 9.7 | 21.5 | 24.2 | 385.7 |
| 1970 | 16.9 | 5.3 | 28.9 | 90.5 | 30.8 | 32.0 | 25.2 | 53.6 | 28.2 | 24.3 | 65.1 | 36.1 | 436.9 |
| 1971 | 13.0 | 22.0 | 18.6 | 104.0 | 49.8 | 45.8 | 34.5 | 45.0 | 50.4 | 43.5 | 87.3 | 33.8 | 547.7 |
| 1972 | 42.5 | 49.8 | 12.2 | 46.5 | 23.1 | 25.6 | 55.2 | 54.3 | 16.0 | 16.8 | 33.5 | 0.0 | 375.5 |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| 1973 | 60.2 | 111.3 | 31.3 | 18.7 | 125.4 | 65.0 | 73.6 | 65.2 | 62.5 | 112.0 | 24.3 | 11.1 | 760.6 |
| 1974 | 88.4 | 38.8 | 45.0 | 104.8 | 64.3 | 17.2 | 63.8 | 71.0 | 68.0 | 71.4 | 16.0 | 12.6 | 661.3 |
| 1975 | 22.6 | 0.0 | 35.0 | 19.0 | 57.0 | 20.4 | 65.0 | 26.0 | 81.4 | 183.0 | 35.0 | 21.0 | 565.4 |
| 1976 | 24.0 | 36.0 | 15.0 | 24.0 | 18.0 | 32.0 | 29.0 | 29.0 | 44.0 | 33.0 | 84.0 | 40.0 | 408.0 |
| 1977 | 21.0 | 33.0 | 28.0 | 12.0 | 63.0 | 62.0 | 23.0 | 24.0 | 23.0 | 31.0 | 38.0 | 14.0 | 372.0 |
| 1978 | 23.0 | 8.0 | 23.0 | 36.7 | 51.4 | 30.7 | 56.8 | 44.6 | 57.0 | 21.0 | 50.6 | 25.0 | 427.8 |
| 1979 | 77.4 | 14.0 | 3.2 | 22.0 | 62.2 | 14.6 | 30.9 | 70.2 | 106.8 | 56.8 | 55.0 | 4.6 | 517.7 |
| 1980 | 7.8 | 0.0 | 6.6 | 47.6 | 45.4 | 41.8 | 53.8 | 45.4 | 26.6 | 82.6 | 33.4 | 13.8 | 404.8 |
| 1981 | 26.4 | 9.0 | 3.2 | 3.8 | 62.3 | 98.6 | 102.4 | 97.8 | 21.4 | 35.8 | 20.2 | 5.6 | 486.5 |
| 1982 | 23.6 | 9.4 | 22.6 | 15.6 | 23.6 | 22.8 | 13.8 | 7.0 | 15.4 | 13.4 | 10.6 | 3.8 | 181.6 |
| 1983 | 4.2 | 9.4 | 58.2 | 46.2 | 80.2 | 25.6 | 68.2 | 78.8 | 73.6 | 38.2 | 72.6 | 21.0 | 576.2 |
| 1984 | 48.0 | 2.6 | 59.8 | 10.6 | 15.8 | 15.6 | 65.8 | 74.6 | 50.2 | 11.2 | 38.2 | 3.0 | 395.4 |
| 1985 | 13.0 | 1.6 | 17.4 | 18.4 | 35.2 | 23.8 | 18.0 | 77.0 | 35.4 | 47.8 | 44.8 | 50.6 | 383.0 |
| 1986 | 8.2 | 2.8 | 0.6 | 34.2 | 78.6 | 22.6 | 112.8 | 42.8 | 55.0 | 92.8 | 15.2 | 56.6 | 522.2 |
| 1987 | 43.4 | 60.6 | 13.6 | 15.4 | 98.8 | 62.0 | 48.8 | 29.8 | 14.6 | 65.0 | 7.4 | 63.8 | 523.2 |
| 1988 | 73.2 | 23.2 | 35.4 | 2.8 | 97.6 | 81.0 | 41.2 | 31.0 | 60.1 | 24.8 | 23.0 | 25.8 | 519.1 |
| 1989 | 3.3 | 17.2 | 30.4 | 23.0 | 68.6 | 62.8 | 63.0 | 68.2 | 49.2 | 45.7 | 40.4 | 8.0 | 479.8 |
| 1990 | 9.2 | 27.2 | 20.0 | 10.6 | 8.3 | 57.3 | 59.7 | 65.0 | 25.2 | 35.0 | 17.8 | 18.2 | 353.5 |
| 1991 | 37.6 | 0.0 | 13.4 | 21.6 | 10.6 | 144.6 | 67.4 | 83.7 | 59.5 | 5.0 | 28.8 | 10.5 | 482.7 |
| 1992 | 32.8 | 24.0 | 34.8 | 38.7 | 86.1 | 42.5 | 26.5 | 80.9 | 87.8 | 93.6 | 57.0 | 55.5 | 660.2 |
| 1993 | 59.8 | 11.4 | 15.7 | 4.0 | 21.8 | 20.4 | 93.5 | 46.2 | 91.0 | 80.4 | 55.0 | 42.8 | 542.0 |
| 1994 | 23.0 | 31.2 | 0.2 | 9.4 | 28.0 | 58.0 | 26.6 | 14.4 | 15.6 | 41.0 | 12.4 | 0.6 | 260.4 |
| 1995 | 31.6 | 19.2 | 8.8 | 39.8 | 47.8 | 92.4 | 109.6 | 30.6 | 18.4 | 66.4 | 5.6 | 6.4 | 476.6 |
| 1996 | 14.2 | 26.8 | 23.2 | 27.0 | 13.2 | 110.4 | 70.4 | 77.2 | 99.0 | 23.2 | 9.2 | 13.0 | 506.8 |
| 1997 | 25.4 | 34.8 | 9.6 | 6.2 | 60.0 | 21.8 | 15.6 | 46.2 | 99.8 | 28.6 | 38.8 | 2.0 | 388.8 |
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| 1998 | 24.4 | 19.8 | 3.6 | 66.2 | 24.6 | 49.0 | 54.8 | 18.8 | 46.4 | 66.0 | 32.0 | 17.6 | 423.2 |
| 1999 | 12.5 | 18.2 | 38.4 | 0.6 | 56.9 | 29.9 | 36.0 | 62.6 | 26.2 | 51.7 | 40.6 | 79.4 | 453.0 |
| 2000 | 1.4 | 33.4 | 9.6 | 42.4 | 35.8 | 29.8 | 57.6 | 33.2 | 61.6 | 43.6 | 32.8 | 25.2 | 406.4 |
| 2001 | 15.6 | 14.0 | 30.4 | 17.6 | 9.6 | 59.8 | 41.0 | 57.8 | 78.6 | 53.2 | 38.4 | 20.4 | 436.4 |
| 2002 | 21.4 | 16.2 | 8.8 | 15.2 | 27.0 | 41.0 | 35.4 | 24.2 | 45.0 | 18.0 | 28.2 | 22.4 | 302.8 |
| 2003 | 3.2 | 60.0 | 2.8 | 11.6 | 48.8 | 77.0 | 32.4 | 90.6 | 26.8 | 68.8 | 11.2 | 30.4 | 463.6 |
| 2004 | 13.6 | 3.6 | 19.4 | 10.0 | 23.6 | 50.8 | 44.2 | 59.0 | 46.6 | 7.0 | 56.6 | 43.6 | 378.0 |
| 2005 | 39.2 | 31.2 | 4.4 | 11.0 | 13.0 | 58.4 | 28.6 | 36.8 | 30.2 | 76.4 | 37.6 | 16.8 | 383.6 |
| 2006 | 25.8 | 5.4 | 6.4 | 38.8 | 26.6 | 5.8 | 31.6 | 19.6 | 39.4 | 2.6 | 8.6 | 7.4 | 218.0 |
| 2007 | 64.3 | 12.6 | 9.6 | 67.4 | 70.4 | 6.8 | 47.8 | 20.2 | 21.2 | 11.0 | 57.0 | 40.6 | 428.9 |
| 2008 | 42.6 | 2.8 | 11.2 | 10.0 | 34.8 | 29.4 | 48.6 | 41.4 | 27.6 | 6.4 | 12.4 | 68.2 | 335.4 |
| 2009 | 0.2 | 0.2 | 13.4 | 27.2 | 60.2 | 54.0 | 58.4 | 46.4 | 68.6 | 23.8 | 57.6 | 32.6 | 442.6 |
| 2010 | 8.2 | 58.2 | 39.8 | 35.4 | 27.2 | 26.4 | 64.6 | 76.8 | 41.2 | 53.0 | 58.0 | 150.2 | 639.0 |
| 2011 | 146.2 | 67.8 | 21.6 | 13.9 | 24.0 | 22.4 | 46.8 | 45.2 | 18.0 | 38.4 | 75.2 | 33.0 | 552.5 |
| 2012 | 9.8 | 6.4 | 42.6 | 11.8 | |||||||||
| 2014 | 37.8 | 13.2 | 17.4 | 5.4 | 11.8 | ||||||||
| 2015 | 74.6 | 13.4 | 3.2 | 13.4 | 17.4 | 29.2 | 7.4 | ||||||
| Statistic | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | 24.2 | 25.1 | 23.4 | 31.3 | 46.1 | 49.1 | 47.0 | 48.1 | 45.8 | 43.4 | 34.2 | 28.5 | 448.0 |
| Lowest | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.4 | 3.7 | 1.1 | 5.1 | 1.0 | 0.0 | 0.0 | 181.6 |
| 5th %ile | 0.8 | 0.0 | 1.8 | 3.1 | 10.5 | 8.6 | 15.6 | 13.2 | 14.6 | 6.4 | 4.8 | 2.0 | 280.5 |
| 10th %ile | 2.3 | 0.8 | 3.0 | 4.8 | 14.5 | 16.9 | 20.1 | 18.6 | 16.7 | 11.2 | 8.6 | 4.4 | 323.1 |
| Median | 16.9 | 16.2 | 16.9 | 22.9 | 40.6 | 46.0 | 46.7 | 46.2 | 44.0 | 37.0 | 28.8 | 21.0 | 439.8 |
| 90th %ile | 62.6 | 62.5 | 48.1 | 66.3 | 86.3 | 88.4 | 70.8 | 78.7 | 84.2 | 80.3 | 66.3 | 61.9 | 568.2 |
| 95th %ile | 74.7 | 83.6 | 60.0 | 87.9 | 95.8 | 99.0 | 91.3 | 84.0 | 97.0 | 92.8 | 77.8 | 79.5 | 625.1 |
| Highest | 146.2 | 140.4 | 121.1 | 109.9 | 148.0 | 156.7 | 123.8 | 126.4 | 108.1 | 183.0 | 135.6 | 150.2 | 760.6 |
Data within the table which are in italics represent observations which have not been fully quality controlled, a process which may take a number of months to complete. While these data may be correct, you should exercise caution in their use.
Gaps occur in the table where there are missing valid daily observations within the month. This is frequently associated with the observer being unavailable (where observations are undertaken manually), a failure in the observing equipment, or when an event has produced suspect data.
Product Code: IDCJAC0001 reference: 89033821
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