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|
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1938 | 59.2 | 69.8 | 163.9 | 174.9 | 194.5 | 214.0 | 234.4 | 222.5 | 149.4 | 174.7 | 84.4 | 20.0 | 1761.7 |
| 1939 | 45.9 | 95.9 | 154.2 | 176.8 | 174.0 | 137.2 | 138.2 | 212.4 | 142.8 | 144.7 | 73.3 | 50.6 | 1546.0 |
| 1940 | 59.5 | 120.3 | 136.0 | 177.0 | 205.4 | 146.0 | 78.0 | 200.6 | 200.5 | 163.5 | 82.8 | 30.9 | 1600.5 |
| 1941 | 44.1 | 58.3 | 124.9 | 220.3 | 224.2 | 166.7 | 120.6 | 138.5 | 172.7 | 97.6 | 76.6 | 29.4 | 1473.9 |
| 1942 | 36.3 | 67.1 | 148.1 | 166.3 | 151.4 | 222.0 | 162.7 | 158.1 | 152.5 | 166.0 | 55.9 | 27.1 | 1513.5 |
| 1943 | 37.7 | 66.5 | 161.4 | 222.1 | 134.9 | 205.3 | 185.4 | 194.3 | 158.8 | 172.1 | 52.1 | 35.5 | 1626.1 |
| 1944 | 29.3 | 73.4 | 149.8 | 193.2 | 233.9 | 128.2 | 220.5 | 206.8 | 158.4 | 181.7 | 64.9 | 38.8 | 1678.9 |
| 1945 | 29.2 | 88.4 | 136.6 | 156.1 | 125.1 | 187.2 | 199.4 | 147.6 | 239.1 | 157.1 | 59.7 | 29.2 | 1554.7 |
| 1946 | 47.4 | 70.2 | 101.9 | 183.5 | 189.2 | 200.6 | 165.5 | 231.6 | 201.7 | 150.0 | 101.5 | 34.1 | 1677.2 |
| 1947 | 42.3 | 78.1 | 151.1 | 115.3 | 256.9 | 181.9 | 148.0 | 182.5 | 173.4 | 157.3 | 61.9 | 26.9 | 1575.6 |
| 1948 | 60.2 | 76.3 | 165.8 | 174.4 | 188.0 | 136.3 | 124.2 | 244.4 | 185.9 | 161.0 | 112.7 | 57.1 | 1686.3 |
| 1949 | 55.2 | 85.9 | 150.8 | 128.6 | 181.1 | 191.2 | 194.8 | 169.1 | 202.3 | 198.3 | 66.1 | 39.0 | 1662.4 |
| 1950 | 42.2 | 91.4 | 142.6 | 195.4 | 245.4 | 218.5 | 184.5 | 249.5 | 195.1 | 168.9 | 78.6 | 39.2 | 1851.3 |
| 1951 | 39.7 | 104.9 | 132.7 | 158.9 | 253.5 | 191.6 | 174.4 | 221.8 | 183.9 | 172.6 | 101.4 | 67.9 | 1803.3 |
| 1952 | 27.6 | 74.4 | 176.7 | 184.4 | 204.0 | 201.8 | 182.1 | 177.8 | 190.6 | 149.7 | 72.2 | 36.6 | 1677.9 |
| 1953 | 42.1 | 70.8 | 144.4 | 221.2 | 161.4 | 165.4 | 124.0 | 224.8 | 234.2 | 165.1 | 38.2 | 24.4 | 1616.0 |
| 1954 | 35.6 | 50.4 | 169.2 | 178.6 | 188.6 | 219.4 | 169.2 | 104.2 | 183.6 | 131.5 | 86.8 | 28.2 | 1545.3 |
| 1955 | 53.0 | 60.1 | 114.6 | 190.6 | 154.2 | 155.0 | 203.7 | 167.3 | 182.5 | 116.6 | 50.6 | 56.4 | 1504.6 |
| 1956 | 33.3 | 73.2 | 164.1 | 220.8 | 262.6 | 150.2 | 69.7 | 91.6 | 168.0 | 174.7 | 57.0 | 24.7 | 1489.9 |
| 1957 | 55.7 | 76.2 | 137.6 | 174.5 | 266.3 | 146.3 | 188.6 | 116.5 | 187.6 | 136.7 | 119.2 | 24.6 | 1629.8 |
| 1958 | 29.2 | 87.5 | 122.8 | 199.1 | 233.8 | 181.3 | 150.1 | 184.3 | 211.8 | 141.9 | 71.5 | 57.3 | 1670.6 |
| 1959 | 42.3 | 103.7 | 170.6 | 182.5 | 222.1 | 153.4 | 148.4 | 158.6 | 174.9 | 166.5 | 54.5 | 36.6 | 1614.1 |
| 1960 | 65.1 | 118.1 | 153.3 | 212.8 | 176.3 | 136.2 | 161.7 | 227.5 | 210.5 | 171.0 | 74.1 | 38.2 | 1744.8 |
| 1961 | 52.7 | 89.9 | 123.0 | 174.6 | 194.7 | 230.3 | 188.3 | 163.9 | 198.5 | 143.4 | 104.0 | 25.0 | 1688.3 |
| 1962 | 60.3 | 135.8 | 125.9 | 184.7 | 230.4 | 171.7 | 146.1 | 113.1 | 152.4 | 151.7 | 76.8 | 47.6 | 1596.5 |
| 1963 | 45.5 | 103.7 | 162.4 | 158.3 | 253.8 | 205.9 | 151.1 | 57.5 | 185.6 | 172.8 | 89.3 | 37.5 | 1623.4 |
| 1964 | 57.9 | 138.1 | 174.3 | 185.7 | 240.0 | 176.1 | 160.8 | 107.3 | 189.2 | 120.5 | 72.0 | 21.3 | 1643.2 |
| 1965 | 41.6 | 50.6 | 105.9 | 220.0 | 208.6 | 183.3 | 166.6 | 193.3 | 125.8 | 140.1 | 42.2 | 13.1 | 1491.1 |
| 1966 | 23.1 | 50.0 | 119.7 | 166.9 | 210.3 | 162.0 | 141.7 | 80.0 | 207.3 | 114.9 | 63.6 | 15.0 | 1354.5 |
| 1967 | 54.3 | 100.9 | 167.9 | 188.3 | 165.0 | 158.6 | 133.3 | 225.2 ) | 148.4 | 177.8 | 61.3 | 28.1 | 1609.1 |
| 1968 | 50.0 | 101.2 | 157.8 | 224.5 | 153.5 | 246.3 | 134.5 | 163.4 | 158.7 | 122.1 | 46.6 | 48.7 | 1607.3 |
| 1969 | 27.8 | 78.0 | 188.3 | 202.8 | 143.5 | 94.2 | 157.3 | 97.6 | 207.3 | 121.0 | 64.4 | 16.3 | 1398.5 |
| 1970 | 23.5 | 76.9 | 113.2 | 231.2 | 213.1 | 128.4 | 166.7 | 149.0 | 233.5 | 167.1 | 73.1 ) | 14.0 | 1589.7 |
| 1971 | 43.9 ) | 84.6 | 154.7 | 199.1 ) | 169.8 | 182.2 ) | 127.5 | 145.5 | 169.0 | 146.7 | 78.5 | 28.7 | 1530.2 |
| 1972 | 53.8 | 95.2 | 183.8 | 204.0 | 190.9 | 147.7 | 170.7 | 210.4 | 168.4 ) | 125.2 | 37.0 | 34.0 | 1621.1 |
| 1973 | 76.1 | 45.5 | 149.8 | 174.1 | 207.1 | 250.0 | 127.6 | 191.3 | 229.0 | 144.9 | 49.3 | 26.2 | 1670.9 |
| 1974 | 40.5 | 87.9 ) | 192.9 | 183.3 | 178.1 | 186.7 | 230.9 | 166.1 | 189.7 | 125.0 | 55.1 | 42.9 | 1679.1 |
| 1975 | 41.6 | 115.0 | 180.1 | 164.5 | 155.1 | 154.2 | 110.2 | 184.9 | 207.0 | 141.7 | 101.7 | 48.8 | 1604.8 |
| 1976 | 50.4 | 100.0 ) | 168.3 | 177.1 | 238.8 | 166.1 | 245.5 | 190.8 | 187.9 | 115.9 ) | 26.3 | 45.8 | 1712.9 |
| 1977 | 70.5 | 102.3 ) | 149.4 | 161.0 | 182.6 | 174.8 | 121.9 | 255.9 | 184.1 | 174.2 | 86.2 | 36.7 | 1699.6 |
| 1978 | 57.3 | 115.9 | 203.0 | 164.1 | 211.1 | 177.4 | 170.0 | 170.4 ) | 247.1 | 137.3 | 92.2 | 45.8 | 1791.6 |
| 1979 | 44.1 | 83.9 | 167.8 | 199.9 | 211.5 | 185.9 | 194.5 | 271.7 | 203.9 | 155.5 | 55.8 | 40.6 | 1815.1 |
| 1980 | 27.8 | 84.4 | 165.0 | 155.6 ) | 195.4 | 202.0 | 157.9 | 179.3 | 215.4 | 155.8 | 101.0 | 26.1 | 1665.7 |
| 1981 | 83.2 | 127.0 | 166.1 | 198.8 | 184.1 | 150.6 | 139.1 | 119.1 | 217.5 | 142.0 | 39.0 | 37.5 | 1604.0 |
| 1982 | 52.8 | 112.9 | 159.7 | 180.2 | 204.8 | 246.4 | 191.9 | 194.6 | 242.1 | 172.1 | 74.8 | 38.9 | 1871.2 |
| 1983 | 60.9 | 87.5 | 180.1 | 244.3 | 186.7 | 119.3 | 183.7 | 208.7 | 146.2 | 151.7 | 101.7 | 47.5 | 1718.3 |
| 1984 | 76.8 | 95.9 | 204.6 | 233.0 | 166.8 | 230.1 | 238.2 | 179.9 | 217.7 | 154.9 | 98.5 | 56.2 | 1952.6 |
| 1985 | 89.9 | 104.4 | 188.4 | 207.1 | 263.8 | 230.5 | 175.8 | 140.6 | 210.1 | 145.2 | 61.0 | 29.9 | 1846.7 |
| 1986 | 65.4 | 91.0 | 142.9 | 156.2 | 169.6 | 194.2 | 108.5 | 157.3 | 202.1 | 166.4 | 35.1 | 41.2 | 1529.9 |
| 1987 | 43.5 | 70.8 | 104.3 | 190.7 | 226.0 | 231.8 | 89.8 | 81.5 | 169.2 | 131.2 | 50.3 | 25.4 | 1414.5 |
| 1988 | 40.6 | 70.8 | 140.4 | 142.1 | 213.3 | 180.7 | 210.4 | 119.5 | 224.9 | 130.9 | 69.8 | 34.1 | 1577.5 |
| 1989 | 71.9 | 129.9 | 109.8 | 147.7 | 216.6 | 185.8 | 180.8 | 179.7 | 149.6 | 110.9 | 65.4 | 43.7 | 1591.8 |
| 1990 | 55.8 | 64.7 | 206.2 | 191.0 | 160.0 | 120.9 | 210.9 | 115.1 | 170.1 | 162.0 | 103.0 | 40.1 | 1599.8 |
| 1991 | 46.1 | 89.6 | 116.8 | 148.9 | 238.0 | 147.9 ) | 124.1 | 163.4 | 165.3 | 126.6 | 54.7 | 19.1 | 1440.5 |
| 1992 | 38.4 ) | 75.1 | 173.1 | 104.0 ) | 153.5 ) | 178.6 | 128.9 | 123.3 | 99.5 | 168.0 | 50.5 | 21.6 | 1314.5 |
| 1993 | 37.5 | 58.3 | 164.2 | 129.9 | 175.3 | 80.7 | 211.9 | 130.8 | 171.0 | 138.4 | 50.4 | 25.5 | 1373.9 |
| 1994 | 49.0 | 40.1 | 108.6 | 174.2 | 207.7 | 202.6 | 142.3 | 191.7 | 122.7 | 149.6 | 58.1 | 21.5 | 1468.1 |
| 1995 | 41.4 | 110.8 | 165.6 | 152.0 | 184.9 | 182.8 | 162.6 | 130.9 | 196.6 | 125.6 | 33.4 ) | 45.4 ) | 1532.0 |
| 1996 | 23.6 ) | 70.4 | 120.1 | 175.7 | 127.4 | 115.5 | 99.1 | 165.3 | 143.3 | 109.8 | 60.7 | 10.6 | 1221.5 |
| 1997 | 24.0 | 76.0 | 113.6 | 182.6 | 138.6 | 54.1 | 108.5 | 91.3 ) | 194.5 | 82.9 | 66.2 | 35.4 ) | 1167.7 |
| 1998 | 30.4 ) | 86.5 | 158.5 | 168.4 | 243.6 | 213.7 | 138.5 | 87.4 | 151.0 | 163.2 | 21.6 ) | 20.3 ) | 1483.1 |
| 1999 | 33.4 | 79.4 ) | 104.2 | 186.2 | 143.5 | 239.7 | 111.9 | 188.1 | 182.0 ) | 124.1 | 54.0 | 18.4 | 1464.9 |
| 2000 | 39.9 ) | 107.5 | 128.9 | 139.7 | 153.0 | 129.4 | 102.8 | 160.8 | 121.5 | 118.4 | 50.9 | 27.0 | 1279.8 |
| 2001 | 31.2 | 44.3 | 126.1 | 167.7 | 166.1 | 135.2 | 130.4 ) | 172.3 | 173.7 | 116.2 | 66.1 | 10.8 | 1340.1 |
| 2002 | 45.6 | 99.8 | 139.0 | 183.4 | 263.9 | 134.5 | 113.7 | 95.4 | 250.7 | 104.1 | 21.9 | 25.5 | 1477.5 |
| 2003 | 54.7 | 142.5 | 183.5 | 186.2 | 209.1 | 206.0 | 174.7 | 121.5 | 186.5 | 119.3 | 45.2 ) | 45.1 | 1674.3 |
| 2004 | 36.2 ) | 39.5 | 115.8 ) | 190.9 | 165.4 | 204.4 | 140.0 | 208.9 | 193.8 | 136.8 | 80.5 | 28.2 | 1540.4 |
| 2005 | 33.8 | 57.8 ) | 108.7 ) | 130.4 | 197.3 | 216.5 | 162.2 | 196.3 | 192.0 | 158.0 | 64.0 | 43.7 ) | 1560.7 |
| 2006 | 47.0 ) | 71.0 | 91.0 | 124.1 | 234.2 | 107.6 | 198.8 | 134.6 | 158.0 | 173.1 | 70.8 | 24.1 | 1434.3 |
| 2007 | 78.8 | 86.4 | 135.3 | 206.7 | 143.1 | 161.9 | 214.4 | 156.2 | 122.4 | 135.1 | 75.8 | 19.4 ) | 1535.5 |
| 2008 | 39.1 | 102.5 | 163.4 | 216.5 | 129.2 | 171.9 | 124.4 | 176.8 | 190.9 | 143.5 | 60.7 | 33.9 | 1552.8 |
| 2009 | 25.2 | 42.8 | 107.2 | 224.8 | 210.3 | 86.8 | 87.1 | 164.2 | 216.6 | 137.0 | 47.3 | 44.2 | 1393.5 |
| 2010 | 40.4 | 48.8 | 108.0 | 146.2 | 168.6 | 204.7 | 73.8 ) | 174.1 | 205.0 | 156.1 | 62.8 | 31.1 | 1419.6 |
| 2011 | 55.9 | 85.2 | 153.3 | 143.2 | 138.6 | 118.7 | 136.6 ) | 174.3 | 168.9 | 143.0 | 80.1 | 32.7 | 1430.5 |
| 2012 | 41.3 | 73.6 ) | 134.1 | 198.9 | 140.4 | 211.5 | 119.3 | 155.7 | 125.7 | 124.1 | 36.1 | 16.7 ) | 1377.4 |
| 2013 | 38.7 | 62.6 | 97.0 | 165.0 | 117.5 | 186.1 | 208.9 | 113.6 | 150.8 | 139.9 | 71.0 | 33.0 | 1384.1 |
| 2014 | 44.1 | 96.7 | 189.9 | 217.2 | 141.5 | 176.1 | 162.7 | 182.1 | 158.5 | 145.1 | 100.1 | 26.6 | 1640.6 |
| 2015 | 51.2 | 83.3 | 118.4 | 178.0 | 186.0 | 125.9 | 130.1 | 135.5 | 173.3 | 121.6 | 84.8 | 49.4 | 1437.5 |
| 2016 | 23.0 | 34.2 | 142.8 | 150.0 | 245.4 | 162.8 | 164.1 | 170.1 | 153.6 | 92.1 | 25.8 | 37.2 | 1401.1 |
| 2017 | 42.4 | 55.2 | 186.8 | 180.6 | 184.1 | 118.4 | 128.9 | 161.5 | 218.2 | 149.8 | 46.5 | 29.6 | 1502.0 |
| 2018 | 26.6 | 55.9 | 143.3 | 195.9 | 170.7 | 110.1 | 158.3 | 162.0 | 218.2 | 154.1 | 55.3 | 20.6 | 1471.0 |
| 2019 | 35.5 | 91.2 | 154.5 | 229.2 | 263.0 | 139.2 | 128.3 | 101.8 | 208.9 | 149.5 | 42.9 | 24.6 ) | 1568.6 |
| 2020 | 62.2 | 73.4 | 174.2 | 208.9 | 207.6 | 114.9 | 194.4 | 132.0 | 149.1 | 133.2 | 39.1 | 30.6 | 1519.6 |
| 2021 | 33.5 | 40.2 | 157.0 | 176.3 | 141.0 | 226.0 | 253.2 | 196.0 | 217.4 | 151.5 | 42.9 | 36.9 | 1671.9 |
| 2022 | 40.6 | 78.5 | 132.2 | 226.1 | 172.0 | 109.6 | 164.7 | 172.7 | 205.9 | 111.3 | 63.8 | 24.7 | 1502.1 |
| 2023 | 42.8 | 75.9 | 168.3 | 153.3 | 210.8 | 183.4 | 137.7 | 126.6 | 187.8 | 143.9 ) | 55.4 | 19.3 | 1505.2 |
| 2024 | 29.2 | 93.7 | 167.5 | 173.8 | 183.3 | 169.2 | 158.9 | 108.4 | 227.2 | 155.2 | 69.8 ) | 1536.2 ] |
Remarks
The red lines, if any, indicate data inhomogeneity caused by changes in instrumentation, observation methods and/or site location.