{"title":"Boston: Days with 50 mm or more rain, days by year","description":"Days by year for Days with 50 mm or more rain in Boston.","dataAsOf":"2026-10-17T00:00:00Z","lastRevised":"2026-10-18","source":"Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products.","licence":"US Government open data (NOAA NCEI)","page":"https://worldextremeweathermonitor.com/cities/boston/days-over-50mm-rain/","columns":[{"name":"threshold","description":"Threshold id, for example tmax_ge_40c."},{"name":"year","description":"Calendar year."},{"name":"days","description":"Days in the year at or beyond the threshold."},{"name":"first","description":"First qualifying date of the year."},{"name":"last","description":"Last qualifying date of the year."},{"name":"longest_streak","description":"Longest run of consecutive qualifying days inside the year."}],"rows":[{"threshold":"prcp_ge_50mm","year":1936,"days":1,"first":"1936-09-18","last":"1936-09-18","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1937,"days":2,"first":"1937-11-28","last":"1937-12-06","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1938,"days":1,"first":"1938-07-21","last":"1938-07-21","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1939,"days":1,"first":"1939-10-31","last":"1939-10-31","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1943,"days":1,"first":"1943-03-06","last":"1943-03-06","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1944,"days":4,"first":"1944-06-24","last":"1944-11-30","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1945,"days":2,"first":"1945-06-20","last":"1945-12-06","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1946,"days":2,"first":"1946-08-02","last":"1946-08-27","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1947,"days":2,"first":"1947-09-02","last":"1947-11-12","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1949,"days":1,"first":"1949-09-01","last":"1949-09-01","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1950,"days":1,"first":"1950-11-21","last":"1950-11-21","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1952,"days":1,"first":"1952-08-05","last":"1952-08-05","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1953,"days":4,"first":"1953-03-30","last":"1953-11-25","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1954,"days":5,"first":"1954-04-17","last":"1954-09-11","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1955,"days":5,"first":"1955-07-10","last":"1955-11-04","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1956,"days":1,"first":"1956-10-23","last":"1956-10-23","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1958,"days":3,"first":"1958-02-16","last":"1958-09-17","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1959,"days":1,"first":"1959-07-11","last":"1959-07-11","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1960,"days":4,"first":"1960-06-04","last":"1960-09-20","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1961,"days":3,"first":"1961-02-04","last":"1961-09-25","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1962,"days":4,"first":"1962-04-01","last":"1962-10-07","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1963,"days":1,"first":"1963-11-29","last":"1963-11-29","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1967,"days":2,"first":"1967-05-25","last":"1967-08-06","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1968,"days":2,"first":"1968-03-18","last":"1968-12-04","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1969,"days":3,"first":"1969-02-24","last":"1969-12-26","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1970,"days":1,"first":"1970-12-17","last":"1970-12-17","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1971,"days":1,"first":"1971-11-25","last":"1971-11-25","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1972,"days":2,"first":"1972-02-19","last":"1972-09-03","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1973,"days":1,"first":"1973-12-17","last":"1973-12-17","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1974,"days":2,"first":"1974-03-21","last":"1974-10-16","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1975,"days":2,"first":"1975-08-30","last":"1975-10-18","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1976,"days":2,"first":"1976-07-30","last":"1976-08-09","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1977,"days":1,"first":"1977-05-09","last":"1977-05-09","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1978,"days":1,"first":"1978-01-20","last":"1978-01-20","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1979,"days":2,"first":"1979-01-21","last":"1979-01-25","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1981,"days":1,"first":"1981-02-25","last":"1981-02-25","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1982,"days":3,"first":"1982-06-02","last":"1982-06-06","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1983,"days":3,"first":"1983-03-02","last":"1983-11-25","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1984,"days":2,"first":"1984-05-31","last":"1984-10-02","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1985,"days":2,"first":"1985-08-01","last":"1985-11-05","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1986,"days":1,"first":"1986-06-06","last":"1986-06-06","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1987,"days":3,"first":"1987-01-02","last":"1987-09-13","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1988,"days":2,"first":"1988-07-24","last":"1988-11-20","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1989,"days":1,"first":"1989-08-13","last":"1989-08-13","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1990,"days":3,"first":"1990-04-03","last":"1990-10-14","longest_streak":1},{"threshold":"prcp_ge_50mm","year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