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|
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1948 | 20.7 | 66.6 | 94.8 | 128.2 | 95.0 | 63.0 | 158.8 | 67.9 | 116.4 | 114.7 | 109.1 | 56.3 | 1091.5 |
| 1949 | 12.0 | 73.9 | 103.3 | 93.9 | 125.0 | 312.0 | 228.8 | 112.3 | 193.3 | 133.9 | 60.9 | 101.6 | 1550.9 |
| 1950 | 119.5 | 29.0 | 127.0 | 104.9 | 104.5 | 245.9 | 29.4 | 87.0 | 162.3 | 104.1 | 87.6 | 36.1 | 1237.3 |
| 1951 | 27.0 | 72.0 | 109.9 | 151.8 | 174.8 | 129.5 | 386.1 | 13.3 | 127.2 | 65.3 | 71.0 | 64.6 | 1392.5 |
| 1952 | 57.0 | 66.9 | 109.8 | 213.9 | 197.7 | 213.5 | 389.8 | 29.8 | 200.2 | 68.9 | 65.1 | 16.0 | 1628.6 |
| 1953 | 28.8 | 69.0 | 73.4 | 64.7 | 264.0 | 322.1 | 215.0 | 137.4 | 330.2 | 36.5 | 45.0 | 43.9 | 1630.0 |
| 1954 | 63.7 | 31.9 | 63.6 | 157.1 | 159.2 | 379.4 | 266.7 | 83.7 | 213.2 | 41.9 | 46.7 | 64.9 | 1572.0 |
| 1955 | 35.6 | 86.0 | 98.6 | 189.2 | 66.2 | 158.0 | 141.3 | 63.3 | 70.8 | 91.6 | 54.3 | 21.2 | 1076.1 |
| 1956 | 64.5 | 31.2 | 165.2 | 122.0 | 213.4 | 180.8 | 69.8 | 159.1 | 188.8 | 154.1 | 54.2 | 4.9 | 1408.0 |
| 1957 | 42.4 | 70.1 | 36.0 | 139.1 | 149.3 | 100.2 | 327.9 | 82.7 | 263.8 | 55.9 | 26.2 | 39.3 | 1332.9 |
| 1958 | 60.3 | 48.2 | 86.6 | 189.9 | 101.9 | 207.3 | 79.2 | 103.3 | 188.7 | 119.9 | 51.8 | 53.1 | 1290.2 |
| 1959 | 60.4 | 119.6 | 84.0 | 157.4 | 138.5 | 76.8 | 166.5 | 82.1 | 108.6 | 85.6 | 89.9 | 64.6 | 1234.0 |
| 1960 | 26.0 | 16.6 | 48.1 | 158.6 | 111.9 | 139.0 | 117.5 | 271.1 | 105.8 | 93.3 | 73.8 | 27.6 | 1189.3 |
| 1961 | 44.9 | 38.3 | 67.9 | 151.0 | 113.7 | 361.7 | 120.4 | 80.9 | 286.7 | 260.1 | 89.1 | 19.2 | 1633.9 |
| 1962 | 29.9 | 16.5 | 32.5 | 137.6 | 157.1 | 341.8 | 192.2 | 51.8 | 41.2 | 138.9 | 48.7 | 56.2 | 1244.4 |
| 1963 | 23.6 | 29.9 | 82.4 | 162.9 | 296.4 | 298.4 | 85.8 | 213.1 | 106.7 | 85.6 | 26.3 | 16.8 | 1427.9 |
| 1964 | 80.9 | 83.8 | 56.8 | 148.4 | 48.8 | 144.9 | 148.8 | 122.8 | 182.5 | 87.6 | 72.7 | 10.5 | 1188.5 |
| 1965 | 49.8 | 25.3 | 126.6 | 103.6 | 231.0 | 169.5 | 318.9 | 12.5 | 606.5 | 49.3 | 128.6 | 40.9 | 1862.5 |
| 1966 | 29.5 | 74.3 | 176.4 | 100.3 | 185.0 | 229.4 | 112.3 | 62.6 | 263.1 | 63.0 | 46.7 | 25.0 | 1367.6 |
| 1967 | 42.8 | 22.3 | 117.1 | 272.2 | 87.2 | 132.1 | 240.6 | 8.4 | 100.0 | 121.8 | 60.7 | 1.1 | 1206.3 |
| 1968 | 21.0 | 62.0 | 75.0 | 77.0 | 109.0 | 108.5 | 290.0 | 106.5 | 259.0 | 95.0 | 7.5 | 55.5 | 1266.0 |
| 1969 | 55.5 | 63.0 | 83.0 | 87.5 | 95.5 | 343.0 | 264.5 | 89.0 | 49.5 | 63.0 | 89.5 | 36.0 | 1319.0 |
| 1970 | 66.0 | 50.0 | 40.5 | 164.5 | 100.0 | 361.0 | 123.5 | 212.0 | 133.0 | 106.5 | 70.0 | 44.0 | 1471.0 |
| 1971 | 17.5 | 32.5 | 75.5 | 114.5 | 111.5 | 166.0 | 324.5 | 173.0 | 133.5 | 107.5 | 3.0 | 55.0 | 1314.0 |
| 1972 | 97.5 | 101.0 | 77.5 | 153.0 | 112.0 | 211.5 | 294.5 | 123.5 | 283.0 | 89.5 | 49.5 | 67.0 | 1659.5 |
| 1973 | 103.0 | 49.0 | 7.5 | 166.5 | 151.0 | 157.0 | 31.5 | 49.0 | 221.5 | 139.0 | 14.5 | 2.5 | 1092.0 |
| 1974 | 17.0 | 69.0 | 72.0 | 142.0 | 68.0 | 171.0 | 257.0 | 137.5 | 189.0 | 152.0 | 43.0 | 57.0 | 1374.5 |
| 1975 | 41.5 | 33.5 | 48.0 | 192.5 | 77.0 | 190.5 | 160.0 | 181.0 | 91.0 | 231.5 | 152.0 | 49.5 | 1448.0 |
| 1976 | 15.5 | 73.0 | 68.5 | 174.5 | 161.0 | 122.0 | 86.5 | 129.0 | 677.5 | 154.5 | 33.5 | 39.5 | 1735.0 |
| 1977 | 8.0 | 16.0 | 114.0 | 113.5 | 97.0 | 144.0 | 55.5 | 62.0 | 169.0 | 35.5 | 145.0 | 40.5 | 1000.0 |
| 1978 | 27.5 | 7.5 | 52.5 | 108.5 | 53.0 | 236.0 | 3.0 | 31.0 | 157.0 | 74.0 | 51.0 | 30.5 | 831.5 |
| 1979 | 34.0 | 98.0 | 100.5 | 108.0 | 125.5 | 176.5 | 32.0 | 77.0 | 205.5 | 98.5 | 105.5 | 23.5 | 1184.5 |
| 1980 | 53.0 | 22.5 | 111.5 | 88.5 | 189.0 | 156.5 | 231.0 | 295.5 | 105.5 | 133.0 | 51.0 | 31.5 | 1468.5 |
| 1981 | 7.0 | 39.5 | 89.5 | 188.5 | 159.5 | 229.0 | 62.0 | 43.0 | 102.5 | 94.0 | 53.5 | 27.0 | 1095.0 |
| 1982 | 11.5 | 23.0 | 99.5 | 103.0 | 67.5 | 61.0 | 235.5 | 241.5 | 108.5 | 27.5 | 96.0 | 24.0 | 1098.5 |
| 1983 | 24.5 | 32.0 | 121.5 | 141.5 | 120.5 | 159.5 | 195.0 | 35.0 | 274.5 | 74.0 | 15.5 | 11.5 | 1205.0 |
| 1984 | 26.5 | 44.5 | 38.5 | 73.5 | 108.5 | 268.0 | 168.0 | 25.0 | 141.0 | 40.0 | 36.5 | 56.5 | 1026.5 |
| 1985 | 6.0 | 85.0 | 122.0 | 177.0 | 152.5 | 331.5 | 75.0 | 37.0 | 116.5 | 39.0 | 32.0 | 23.5 | 1197.0 |
| 1986 | 10.0 | 18.5 | 114.5 | 173.5 | 212.5 | 168.0 | 110.5 | 91.0 | 46.5 | 35.5 | 15.5 | 65.0 | 1061.0 |
| 1987 | 33.0 | 49.5 | 127.0 | 55.5 | 158.5 | 111.0 | 209.0 | 44.5 | 103.0 | 278.5 | 60.5 | 17.0 | 1247.0 |
| 1988 | 44.0 | 12.5 | 124.5 | 113.5 | 214.0 | 342.0 | 137.5 | 75.0 | 171.5 | 54.0 | 11.0 | 3.5 | 1303.0 |
| 1989 | 90.5 | 144.5 | 90.0 | 52.0 | 198.0 | 214.5 | 135.5 | 159.5 | 278.5 | 44.0 | 57.5 | 7.0 | 1471.5 |
| 1990 | 51.0 | 124.5 | 103.0 | 96.5 | 253.5 | 162.5 | 150.5 | 54.0 | 403.5 | 143.5 | 165.0 | 33.0 | 1740.5 |
| 1991 | 20.0 | 38.0 | 112.5 | 128.0 | 79.5 | 135.5 | 149.0 | 40.5 | 78.5 | 122.0 | 66.0 | 44.5 | 1014.0 |
| 1992 | 28.5 | 26.0 | 146.0 | 128.5 | 82.5 | 153.5 | 55.0 | 205.0 | 139.5 | 125.5 | 52.5 | 75.5 | 1218.0 |
| 1993 | 53.0 | 56.5 | 58.5 | 72.0 | 111.5 | 198.5 | 353.0 | 247.0 | 169.5 | 85.5 | 64.0 | 54.0 | 1523.0 |
| 1994 | 15.5 | 64.0 | 38.0 | 127.0 | 102.5 | 94.0 | 11.5 ) | 21.5 | 121.0 | 50.0 | 36.0 | 40.0 | 721.0 |
| 1995 | 41.5 | 11.0 | 66.5 | 103.0 | 313.0 | 106.5 | 280.0 | 52.5 | 36.0 | 88.5 | 34.5 | 7.0 | 1140.0 |
| 1996 | 26.5 | 23.0 | 102.5 | 32.5 | 114.5 | 202.5 | 78.0 | 216.5 | 157.0 | 112.0 | 33.5 | 77.0 | 1175.5 |
| 1997 | 21.5 | 21.5 | 102.5 | 75.5 | 156.0 | 101.5 | 387.0 | 68.5 | 143.0 | 15.0 | 119.0 | 45.5 | 1256.5 |
| 1998 | 79.5 | 69.0 | 79.5 | 128.5 | 173.5 | 115.0 | 189.5 | 57.5 | 227.0 | 182.0 | 5.5 | 4.5 | 1311.0 |
| 1999 | 20.0 | 46.0 | 112.5 | 81.5 | 193.0 | 261.5 | 129.0 | 16.5 | 133.5 | 70.5 | 92.5 | 2.0 | 1158.5 |
| 2000 | 64.5 | 19.0 | 117.0 | 79.5 | 92.0 | 130.0 | 26.0 | 4.0 | 189.0 | 125.0 | 108.5 | 21.5 | 976.0 |
| 2001 | 119.5 | 66.0 | 66.5 | 21.0 | 123.5 | 203.5 | 42.0 | 145.0 | 166.0 | 197.5 | 46.0 | 34.5 | 1231.0 |
| 2002 | 57.0 | 14.0 | 114.0 | 98.0 | 123.0 | 84.5 | 138.5 | 20.0 | 48.0 | 42.0 | 20.0 | 49.0 | 808.0 |
| 2003 | 44.5 | 53.5 | 95.0 | 136.5 | 120.5 | 113.5 | 277.0 | 202.5 | 87.0 | 53.0 | 165.5 | 32.0 | 1380.5 |
| 2004 | 3.5 | 38.5 | 72.5 | 135.5 | 237.0 | 199.0 | 27.0 ) | 157.5 | 342.5 | 252.5 | 40.0 | 74.0 | 1579.5 |
| 2005 | 16.5 | 66.0 | 78.5 | 37.5 | 57.5 | 57.0 | 217.0 | 53.0 | 46.0 | 63.0 | 54.0 | 7.5 | 753.5 |
| 2006 | 34.5 | 67.5 | 78.5 | 97.5 | 124.0 | 162.5 | 378.0 | 121.0 | 148.5 | 57.0 | 79.5 | 56.0 | 1404.5 |
| 2007 | 17.5 | 42.0 | 69.0 | 19.5 | 139.0 | 130.5 | 242.5 | 139.0 | 71.5 | 78.5 | 17.5 | 72.0 | 1038.5 |
| 2008 | 53.0 | 31.5 | 114.5 | 144.5 | 170.0 | 93.0 | 41.5 | 69.5 | 165.5 | 74.5 | 44.0 | 18.5 | 1020.0 |
| 2009 | 39.5 | 137.0 | 90.5 | 78.0 | 54.0 | 89.0 | 243.0 | 213.5 | 70.0 | 83.0 | 138.5 | 54.5 | 1290.5 |
| 2010 | 15.5 | 88.0 | 136.0 | 216.0 | 187.0 | 259.5 | 268.0 | 21.5 | 144.0 | 114.5 | 12.0 | 63.0 | 1525.0 |
| 2011 | 4.5 | 60.0 | 30.0 | 84.0 | 258.0 | 87.5 | 115.5 | 50.0 | 609.0 | 126.5 | 81.5 | 12.5 | 1519.0 |
| 2012 | 22.0 | 68.0 | 143.5 | 127.5 | 65.5 | 335.0 | 224.5 | 39.5 | 225.5 | 70.0 | 95.0 | 89.0 | 1505.0 |
| 2013 | 27.5 | 54.5 | 43.5 | 85.0 | 66.5 | 225.5 | 101.5 | 116.0 | 439.0 | 169.5 | 55.0 | 82.0 | 1465.5 |
| 2014 | 25.0 | 40.5 | 109.0 | 72.5 | 81.5 | 52.0 | 96.5 | 295.5 | 96.5 | 158.5 | 71.0 | 58.0 | 1156.5 |
| 2015 | 84.0 | 28.0 | 143.0 | 125.0 | 126.0 | 182.0 | 347.0 | 180.5 | 137.5 | 43.5 | 143.5 | 101.0 | 1641.0 |
| 2016 | 48.0 | 62.5 | 65.0 | 209.0 | 131.5 | 268.0 | 164.5 | 75.0 | 325.0 | 65.0 | 58.5 | 80.0 | 1552.0 |
| 2017 | 28.0 | 31.0 | 35.5 | 124.5 | 46.0 | 179.5 | 118.0 | 57.5 | 218.0 | 365.0 | 38.5 | 25.5 | 1267.0 |
| 2018 | 36.0 | 38.0 | 168.0 | 110.0 | 174.0 | 189.5 | 370.5 | 87.5 | 365.0 | 49.0 | 2.5 | 80.5 | 1670.5 |
| 2019 | 18.0 | 51.5 | 72.0 | 118.0 | 42.0 | 166.0 | 139.0 | 185.5 | 95.5 | 131.0 | 11.5 | 54.0 | 1084.0 |
| 2020 | 43.5 | 46.0 | 100.5 | 144.5 | 73.0 | 237.0 | 318.0 | 1.5 | 140.0 | 91.0 | 50.0 | 9.5 | 1254.5 |
| 2021 | 57.5 | 40.5 | 93.0 | 118.0 | 160.5 | 207.5 | 204.0 | 251.0 | 126.0 | 47.5 | 100.0 | 30.5 | 1436.0 |
| 2022 | 10.0 | 14.5 | 99.5 | 141.0 | 71.5 | 72.5 | 164.5 | 93.0 | 159.0 | 86.5 | 79.5 | 12.5 | 1004.0 |
| 2023 | 34.0 | 35.5 | 84.0 | 172.0 | 232.0 | 207.5 | 115.0 | 236.5 | 84.5 | 40.5 | 108.0 | 30.5 | 1380.0 |
| 2024 | 25.0 | 88.5 | 158.5 | 181.5 | 238.5 | 222.5 | 129.0 | 181.5 | 4.5 | 149.5 | 150.5 | 1.5 | 1531.0 |
| 2025 | 12.0 | 13.0 | 113.5 | 52.5 | 128.0 | 150.0 | 97.0 | 142.0 | 107.0 | 89.5 | 34.0 | 32.5 | 971.0 |
| 2026 | 0.0 | 73.5 | 76.5 | 182.0 | 81.0 | 174.5 ] | 587.5 ] |
Remarks
The red lines, if any, indicate data inhomogeneity caused by changes in instrumentation, observation methods and/or site location.