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|
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1940 | 1.1 | 150.4 | 79.4 | 224.8 | 57.0 | 188.3 | 97.4 | 360.8 | 76.9 | 155.0 | 58.5 | 21.4 | 1471.0 |
| 1941 | 98.9 | 77.8 | 245.9 | 224.2 | 401.0 | 593.7 | 714.4 | 418.3 | 501.3 | 97.6 | 267.4 | 90.7 | 3731.2 |
| 1942 | 12.9 | 134.1 | 317.8 | 254.8 | 105.5 | 347.4 | 35.3 | 161.2 | 200.9 | 136.8 | 135.5 | 6.2 | 1848.4 |
| 1943 | 45.7 | 154.3 | 122.0 | 176.9 | 108.9 | 261.7 | 235.6 | 208.3 | 122.0 | 443.3 | 52.0 | 31.4 | 1962.1 |
| 1944 | 28.3 | 66.6 | 77.6 | 270.4 | 152.1 | 126.3 | 258.2 | 345.6 | 357.3 | 270.9 | 184.7 | 19.7 | 2157.7 |
| 1945 | 1.0 | 84.7 | 175.3 | 279.7 | 162.3 | 386.2 | 374.6 | 457.5 | 181.1 | 858.5 | 84.5 | 60.9 | 3106.3 |
| 1946 | 65.3 | 66.1 | 158.6 | 162.5 | 245.5 | 112.9 | 141.8 | 12.3 | 375.7 | 187.7 | 265.7 | 94.0 | 1888.1 |
| 1947 | 139.4 | 23.1 | 196.9 | 170.9 | 269.5 | 115.6 | 111.1 | 66.1 | 381.2 | 119.0 | 63.6 | 105.1 | 1761.5 |
| 1948 | 58.1 | 132.4 | 169.1 | 208.0 | 137.3 | 391.7 | 109.3 | 205.3 | 468.2 | 102.0 | 220.6 | 82.0 | 2284.0 |
| 1949 | 82.0 | 98.0 | 120.9 | 173.5 | 270.5 | 491.4 | 158.4 | 154.1 | 363.2 | 220.9 | 200.7 | 111.2 | 2444.8 |
| 1950 | 130.7 | 114.4 | 171.9 | 195.0 | 399.6 | 639.9 | 140.7 | 314.8 | 288.5 | 119.8 | 174.3 | 130.3 | 2819.9 |
| 1951 | 40.8 | 100.7 | 331.7 | 331.3 | 205.2 | 266.1 | 383.9 | 311.7 | 299.8 | 121.1 | 123.2 | 128.8 | 2644.3 |
| 1952 | 96.7 | 106.2 | 258.0 | 246.0 | 235.7 | 311.8 | 391.3 | 285.2 | 182.8 | 197.3 | 92.0 | 39.8 | 2442.8 |
| 1953 | 63.0 | 91.2 | 252.2 | 200.8 | 235.5 | 591.8 | 342.8 | 377.3 | 397.5 | 138.7 | 22.3 | 44.5 | 2757.6 |
| 1954 | 94.9 | 163.0 | 141.5 | 407.5 | 322.8 | 470.8 | 215.9 | 247.9 | 513.3 | 88.2 | 92.8 | 100.8 | 2859.4 |
| 1955 | 79.3 | 93.0 | 257.6 | 314.1 | 128.3 | 213.7 | 66.2 | 431.8 | 197.6 | 280.6 | 87.0 | 60.8 | 2210.0 |
| 1956 | 95.5 | 41.4 | 366.2 | 362.3 | 408.6 | 294.2 | 65.5 | 192.6 | 405.2 | 305.2 | 62.8 | 11.3 | 2610.8 |
| 1957 | 46.7 | 111.3 | 60.7 | 174.9 | 273.9 | 370.4 | 250.9 | 394.8 | 409.7 | 88.2 | 144.7 | 108.9 | 2435.1 |
| 1958 | 120.6 | 145.7 | 99.8 | 152.4 | 116.2 | 60.4 | 352.3 | 217.5 | 382.2 | 226.0 | 95.4 | 137.0 | 2105.5 |
| 1959 | 137.5 | 272.6 | 143.8 | 387.5 | 186.8 | 132.3 | 201.6 | 576.9 | 277.2 | 161.6 | 147.5 | 183.4 | 2808.7 |
| 1960 | 37.1 | 18.1 | 150.8 | 249.0 | 234.3 | 217.7 | 264.2 | 371.8 | 166.6 | 112.7 | 144.7 | 63.1 | 2030.1 |
| 1961 | 87.8 | 38.4 | 201.2 | 397.8 | 297.1 | 512.2 | 81.2 | 197.2 | 97.5 | 230.4 | 162.8 | 49.7 | 2353.3 |
| 1962 | 29.2 | 16.9 | 81.9 | 307.7 | 329.3 | 422.0 | 341.5 | 313.6 | 146.8 | 159.3 | 214.4 | 124.1 | 2486.7 |
| 1963 | 5.3 | 36.3 | 116.7 | 235.6 | 458.2 | 334.2 | 206.7 | 200.2 | 129.7 | 181.5 | 57.2 | 39.2 | 2000.8 |
| 1964 | 177.6 | 93.5 | 124.5 | 179.1 | 96.2 | 509.9 | 49.3 | 101.5 | 319.7 | 106.6 | 36.3 | 48.9 | 1843.1 |
| 1965 | 43.2 | 37.3 | 49.7 | 174.2 | 431.1 | 251.2 | 230.2 | 138.4 | 250.1 | 128.2 | 193.0 | 78.3 | 2004.9 |
| 1966 | 51.3 | 181.8 | 245.4 | 220.7 | 289.2 | 383.0 | 268.5 | 252.8 | 253.9 | 181.2 | 102.8 | 9.2 | 2439.8 |
| 1967 | 148.6 | 63.3 | 215.9 | 262.9 | 84.9 | 274.7 | 280.0 | 208.2 | 73.3 | 213.9 | 238.4 | 22.8 | 2086.9 |
| 1968 | 62.0 | 55.0 | 267.5 | 142.5 | 204.5 | 293.0 | 484.5 | 514.5 | 35.5 | 85.5 | 74.0 | 242.0 | 2460.5 |
| 1969 | 105.0 | 143.5 | 210.5 | 229.5 | 153.0 | 546.5 | 303.5 | 359.0 | 157.0 | 78.5 | 106.0 | 45.0 | 2437.0 |
| 1970 | 96.0 | 102.5 | 77.0 | 163.0 | 232.5 | 430.5 | 271.5 | 208.0 | 159.0 | 135.0 | 63.5 | 94.0 | 2032.5 |
| 1971 | 44.0 | 81.5 | 213.5 | 222.5 | 214.5 | 112.0 | 211.0 | 399.0 | 230.0 | 243.5 | 16.5 | 101.0 | 2089.0 |
| 1972 | 76.5 | 163.0 | 275.5 | 299.0 | 250.0 | 317.0 | 538.5 | 175.0 | 428.0 | 58.0 | 113.0 | 102.0 | 2795.5 |
| 1973 | 263.5 | 87.0 | 29.5 | 253.0 | 264.0 | 131.5 | 176.5 | 243.0 | 187.5 | 278.5 | 84.0 | 0.0 | 1998.0 |
| 1974 | 22.5 | 117.5 | 163.0 | 457.5 | 152.0 | 335.5 | 789.0 | 277.0 | 379.5 | 170.5 | 42.0 | 98.0 | 3004.0 |
| 1975 | 104.5 | 117.5 | 171.0 | 209.0 | 161.5 | 158.0 | 273.0 | 243.0 | 165.0 | 346.0 | 161.5 | 91.5 | 2201.5 |
| 1976 | 0.0 | 255.0 | 240.0 | 205.5 | 353.5 | 359.0 | 216.5 | 179.0 | 287.0 | 166.5 | 110.0 | 119.0 | 2491.0 |
| 1977 | 34.5 | 57.5 | 334.0 | 261.5 | 223.5 | 324.0 | 169.5 | 269.5 | 370.0 | 31.0 | 187.0 | 101.5 | 2363.5 |
| 1978 | 37.0 | 68.5 | 99.5 | 232.5 | 181.0 | 280.5 | 185.5 | 136.5 | 288.0 | 191.0 | 115.0 | 45.5 | 1860.5 |
| 1979 | 67.0 | 140.0 | 265.0 | 242.0 | 220.0 | 123.0 | 228.5 | 274.0 | 233.5 | 270.0 | 228.0 | 60.0 | 2351.0 |
| 1980 | 129.5 | 22.5 | 245.5 | 284.0 | 285.5 | 334.5 | 470.5 | 212.0 | 259.5 | 167.0 | 148.0 | 37.5 | 2596.0 |
| 1981 | 23.5 | 77.0 | 298.5 | 364.0 | 174.0 | 168.5 | 332.0 | 360.5 | 234.5 | 339.0 | 176.0 | 20.0 | 2567.5 |
| 1982 | 52.5 | 112.0 | 217.5 | 156.5 | 121.0 | 225.5 | 442.5 | 524.0 | 695.5 | 111.0 | 248.0 | 54.5 | 2960.5 |
| 1983 | 55.5 | 43.0 | 241.0 | 381.5 | 278.0 | 476.0 | 192.5 | 605.0 | 479.0 | 199.5 | 40.5 | 17.0 | 3008.5 |
| 1984 | 38.5 | 96.0 | 101.0 | 125.0 | 105.5 | 372.0 | 52.0 | 213.0 | 86.5 | 34.0 | 78.0 | 46.5 | 1348.0 |
| 1985 | 23.5 | 152.5 | 319.0 | 241.5 | 185.5 | 483.0 | 89.0 | 277.0 | 209.5 | 101.0 | 111.5 | 13.5 | 2206.5 |
| 1986 | 26.0 | 56.5 | 219.0 | 177.5 | 293.0 | 185.0 | 272.0 | 255.5 | 172.5 | 72.0 | 28.5 | 170.0 | 1927.5 |
| 1987 | 107.5 | 63.0 | 281.0 | 91.0 | 318.0 | 185.0 | 256.0 | 347.0 | 350.5 | 95.5 | 60.0 | 35.0 | 2189.5 |
| 1988 | 30.0 | 40.5 | 208.5 | 237.5 | 118.5 | 444.5 | 214.0 | 317.0 | 471.0 | 66.0 | 69.5 | 1.0 | 2218.0 |
| 1989 | 174.0 | 323.5 | 195.0 | 267.0 | 180.0 | 364.5 | 232.5 | 230.0 | 262.5 | 172.0 | 191.5 | 33.0 | 2625.5 |
| 1990 | 91.0 | 267.5 | 195.5 | 189.0 | 400.0 | 341.5 | 231.0 | 255.0 | 544.5 | 125.0 | 190.0 | 29.5 | 2859.5 |
| 1991 | 67.0 | 69.5 | 271.0 | 210.0 | 123.0 | 313.5 | 219.0 | 176.0 | 577.0 | 426.0 | 125.0 | 65.5 | 2642.5 |
| 1992 | 43.0 | 63.5 | 211.0 | 271.5 | 279.0 | 273.0 | 152.5 | 145.5 | 206.5 | 240.5 | 219.0 | 129.5 | 2234.5 |
| 1993 | 97.5 | 146.0 | 90.0 | 85.5 | 135.5 | 273.0 | 567.5 | 149.5 | 264.0 | 254.0 | 182.5 | 129.5 | 2374.5 |
| 1994 | 66.5 | 72.5 | 153.5 | 221.0 | 259.0 | 147.5 | 168.0 | 37.0 | 252.5 | 74.5 | 65.0 | 31.5 | 1548.5 |
| 1995 | 77.5 | 31.5 | 205.0 | 251.0 | 313.0 | 125.0 | 249.5 | 18.5 | 96.0 | 132.0 | 112.5 | 6.5 | 1618.0 |
| 1996 | 59.0 | 34.5 | 342.5 | 53.5 | 89.5 | 219.5 | 330.5 | 146.5 | 128.5 | 125.5 | 139.5 | 142.5 | 1811.5 |
| 1997 | 17.0 | 68.0 | 153.5 | 254.0 | 113.5 | 274.5 | 400.5 | 47.5 | 175.0 | 21.5 | 337.5 | 46.5 | 1909.0 |
| 1998 | 180.5 | 122.0 | 204.5 | 468.5 | 366.5 | 362.5 | 316.0 | 486.5 | 484.5 | 365.0 | 3.0 | 39.5 | 3399.0 |
| 1999 | 27.5 | 89.0 | 252.0 | 205.5 | 365.5 | 355.5 | 211.5 | 168.5 | 257.0 | 50.5 | 168.0 | 1.0 | 2151.5 |
| 2000 | 112.0 | 27.0 | 178.0 | 197.5 | 122.0 | 433.5 | 205.0 | 194.5 | 354.0 | 227.0 | 234.0 | 21.0 | 2305.5 |
| 2001 | 185.0 | 95.0 | 102.0 | 62.0 | 119.0 | 200.5 | 27.5 | 263.0 | 437.5 | 315.5 | 149.0 | 53.0 | 2009.0 |
| 2002 | 139.5 | 46.5 | 212.0 | 80.0 | 161.5 | 281.0 | 398.5 | 153.5 | 246.5 | 289.0 | 25.0 | 98.5 | 2131.5 |
| 2003 | 146.0 | 60.5 | 215.5 | 240.5 | 251.0 | 126.5 | 704.5 | 834.5 | 217.0 | 139.5 | 335.5 | 39.5 | 3310.5 |
| 2004 | 27.0 | 93.5 | 147.5 | 230.0 | 258.5 | 641.0 | 174.0 | 233.5 | 289.0 | 957.0 | 184.0 | 156.5 | 3391.5 |
| 2005 | 36.5 | 81.5 | 212.0 | 106.0 | 115.5 | 146.0 | 364.5 | 273.5 | 125.0 | 206.0 | 41.0 | 0.0 | 1707.5 |
| 2006 | 82.5 | 206.5 | 128.0 | 220.0 | 264.0 | 297.0 | 228.0 | 184.5 | 186.0 | 119.0 | 79.0 | 92.5 | 2087.0 |
| 2007 | 51.0 | 87.0 | 240.0 | 126.0 | 221.0 | 206.5 | 503.5 | 58.0 | 335.5 | 123.0 | 10.0 | 91.0 | 2052.5 |
| 2008 | 39.0 | 66.5 | 228.5 | 221.0 | 250.5 | 322.5 | 128.5 | 291.5 | 146.0 | 136.0 | 59.0 | 66.5 | 1955.5 |
| 2009 | 129.0 | 154.5 | 301.0 | 176.0 | 219.5 | 255.5 | 395.0 | 183.5 | 87.0 | 196.5 | 188.0 | 65.0 | 2350.5 |
| 2010 | 45.0 | 232.5 | 381.5 | 386.0 | 188.0 | 285.0 | 270.0 | 96.5 | 390.5 | 283.5 | 93.5 | 194.0 | 2846.0 |
| 2011 | 0.0 | 186.0 | 68.5 | 174.5 | 336.5 | 269.5 | 229.5 | 341.5 | 389.0 | 197.0 | 284.0 | 22.0 | 2498.0 |
| 2012 | 43.0 | 248.0 | 290.0 | 225.0 | 235.0 | 321.5 | 196.0 | 173.0 | 287.5 | 104.0 | 219.0 | 146.5 | 2488.5 |
| 2013 | 80.5 | 120.0 | 101.5 | 269.0 | 181.0 | 163.5 | 128.0 | 89.5 | 227.0 | 298.0 | 104.5 | 59.5 | 1822.0 |
| 2014 | 66.5 | 205.0 | 368.5 | 209.0 | 175.0 | 97.0 | 160.0 | 160.5 | 232.0 | 490.5 | 87.5 | 122.5 | 2374.0 |
| 2015 | 173.5 | 79.5 | 146.0 | 242.0 | 212.0 | 206.5 | 457.0 | 204.0 | 615.0 | 109.5 | 196.5 | 163.0 | 2804.5 |
| 2016 | 115.0 | 157.5 | 230.5 | 361.0 | 267.5 | 267.5 | 78.0 | 88.5 | 376.0 | 176.0 | 146.0 | 178.0 | 2441.5 |
| 2017 | 48.5 | 107.0 | 96.5 | 278.0 | 91.5 | 272.0 | 272.5 | 61.5 | 237.5 | 563.5 | 49.5 | 30.0 | 2108.0 |
| 2018 | 109.5 | 22.5 | 342.0 | 341.0 | 334.5 | 279.5 | 234.0 | 145.0 | 425.0 | 63.0 | 38.0 | 108.0 | 2442.0 |
| 2019 | 10.0 | 84.0 | 84.0 | 252.0 | 290.0 | 278.0 | 311.5 | 131.5 | 93.5 | 622.0 | 124.0 | 110.0 | 2390.5 |
| 2020 | 112.0 | 103.0 | 256.0 | 248.5 | 122.0 | 372.0 | 818.0 | 59.0 | 281.5 | 204.0 | 25.5 | 12.0 | 2613.5 |
| 2021 | 64.5 | 96.5 | 399.0 | 221.0 | 298.0 | 218.0 | 436.0 | 247.0 | 254.5 | 94.5 | 90.0 | 92.0 | 2511.0 |
| 2022 | 21.0 | 55.0 | 162.5 | 320.0 | 288.0 | 208.5 | 567.0 | 418.5 ) | 616.5 | 87.0 | 189.5 | 33.5 | 2967.0 |
| 2023 | 19.5 | 56.0 | 184.0 | 225.0 | 367.5 | 569.0 | 129.0 | 344.5 | 103.5 | 174.5 | 124.0 | 86.0 | 2382.5 |
| 2024 | 66.0 | 248.5 | 433.0 | 210.0 | 409.0 | 433.5 | 173.5 | 1071.0 | 145.0 | 326.0 | 238.0 | 0.0 | 3753.5 |
| 2025 | 33.5 | 24.0 | 170.0 | 148.0 | × | 375.5 ] |
Remarks
The red lines, if any, indicate data inhomogeneity caused by changes in instrumentation, observation methods and/or site location.