{"title":"Chicago: Days at or above 35 C, days by year","description":"Days by year for Days at or above 35 C in Chicago.","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/chicago/days-above-35c/","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":"tmax_ge_35c","year":1959,"days":2,"first":"1959-09-07","last":"1959-09-08","longest_streak":2},{"threshold":"tmax_ge_35c","year":1960,"days":3,"first":"1960-09-03","last":"1960-09-07","longest_streak":2},{"threshold":"tmax_ge_35c","year":1963,"days":1,"first":"1963-07-01","last":"1963-07-01","longest_streak":1},{"threshold":"tmax_ge_35c","year":1964,"days":2,"first":"1964-08-02","last":"1964-08-03","longest_streak":2},{"threshold":"tmax_ge_35c","year":1966,"days":2,"first":"1966-07-10","last":"1966-07-18","longest_streak":1},{"threshold":"tmax_ge_35c","year":1968,"days":4,"first":"1968-08-06","last":"1968-08-23","longest_streak":2},{"threshold":"tmax_ge_35c","year":1969,"days":2,"first":"1969-06-25","last":"1969-06-26","longest_streak":2},{"threshold":"tmax_ge_35c","year":1970,"days":1,"first":"1970-07-02","last":"1970-07-02","longest_streak":1},{"threshold":"tmax_ge_35c","year":1971,"days":3,"first":"1971-06-27","last":"1971-06-29","longest_streak":3},{"threshold":"tmax_ge_35c","year":1973,"days":2,"first":"1973-07-13","last":"1973-08-27","longest_streak":1},{"threshold":"tmax_ge_35c","year":1974,"days":3,"first":"1974-07-09","last":"1974-07-14","longest_streak":2},{"threshold":"tmax_ge_35c","year":1976,"days":3,"first":"1976-07-10","last":"1976-08-27","longest_streak":1},{"threshold":"tmax_ge_35c","year":1977,"days":7,"first":"1977-06-04","last":"1977-07-20","longest_streak":2},{"threshold":"tmax_ge_35c","year":1978,"days":1,"first":"1978-09-08","last":"1978-09-08","longest_streak":1},{"threshold":"tmax_ge_35c","year":1980,"days":6,"first":"1980-07-07","last":"1980-08-28","longest_streak":2},{"threshold":"tmax_ge_35c","year":1981,"days":1,"first":"1981-06-29","last":"1981-06-29","longest_streak":1},{"threshold":"tmax_ge_35c","year":1982,"days":2,"first":"1982-07-05","last":"1982-08-03","longest_streak":1},{"threshold":"tmax_ge_35c","year":1983,"days":16,"first":"1983-06-26","last":"1983-09-10","longest_streak":2},{"threshold":"tmax_ge_35c","year":1984,"days":3,"first":"1984-07-09","last":"1984-09-01","longest_streak":2},{"threshold":"tmax_ge_35c","year":1985,"days":2,"first":"1985-06-08","last":"1985-09-07","longest_streak":1},{"threshold":"tmax_ge_35c","year":1986,"days":1,"first":"1986-07-19","last":"1986-07-19","longest_streak":1},{"threshold":"tmax_ge_35c","year":1987,"days":7,"first":"1987-06-14","last":"1987-08-03","longest_streak":3},{"threshold":"tmax_ge_35c","year":1988,"days":22,"first":"1988-06-20","last":"1988-08-17","longest_streak":5},{"threshold":"tmax_ge_35c","year":1989,"days":3,"first":"1989-07-06","last":"1989-07-10","longest_streak":2},{"threshold":"tmax_ge_35c","year":1990,"days":3,"first":"1990-07-04","last":"1990-09-06","longest_streak":1},{"threshold":"tmax_ge_35c","year":1991,"days":12,"first":"1991-06-29","last":"1991-08-28","longest_streak":3},{"threshold":"tmax_ge_35c","year":1994,"days":3,"first":"1994-06-15","last":"1994-07-05","longest_streak":2},{"threshold":"tmax_ge_35c","year":1995,"days":11,"first":"1995-06-20","last":"1995-08-14","longest_streak":4},{"threshold":"tmax_ge_35c","year":1997,"days":1,"first":"1997-07-26","last":"1997-07-26","longest_streak":1},{"threshold":"tmax_ge_35c","year":1998,"days":2,"first":"1998-06-25","last":"1998-06-27","longest_streak":1},{"threshold":"tmax_ge_35c","year":1999,"days":3,"first":"1999-07-25","last":"1999-07-30","longest_streak":2},{"threshold":"tmax_ge_35c","year":2001,"days":3,"first":"2001-07-22","last":"2001-08-09","longest_streak":1},{"threshold":"tmax_ge_35c","year":2002,"days":1,"first":"2002-07-21","last":"2002-07-21","longest_streak":1},{"threshold":"tmax_ge_35c","year":2003,"days":2,"first":"2003-08-21","last":"2003-08-25","longest_streak":1},{"threshold":"tmax_ge_35c","year":2005,"days":5,"first":"2005-06-24","last":"2005-08-09","longest_streak":1},{"threshold":"tmax_ge_35c","year":2006,"days":5,"first":"2006-07-15","last":"2006-08-02","longest_streak":3},{"threshold":"tmax_ge_35c","year":2011,"days":5,"first":"2011-06-07","last":"2011-07-21","longest_streak":2},{"threshold":"tmax_ge_35c","year":2012,"days":17,"first":"2012-05-27","last":"2012-08-03","longest_streak":6},{"threshold":"tmax_ge_35c","year":2013,"days":5,"first":"2013-07-18","last":"2013-09-10","longest_streak":2},{"threshold":"tmax_ge_35c","year":2017,"days":2,"first":"2017-06-12","last":"2017-09-23","longest_streak":1},{"threshold":"tmax_ge_35c","year":2018,"days":6,"first":"2018-05-27","last":"2018-08-04","longest_streak":2},{"threshold":"tmax_ge_35c","year":2019,"days":1,"first":"2019-07-20","last":"2019-07-20","longest_streak":1},{"threshold":"tmax_ge_35c","year":2020,"days":6,"first":"2020-07-06","last":"2020-08-28","longest_streak":2},{"threshold":"tmax_ge_35c","year":2021,"days":1,"first":"2021-08-24","last":"2021-08-24","longest_streak":1},{"threshold":"tmax_ge_35c","year":2022,"days":5,"first":"2022-06-14","last":"2022-08-06","longest_streak":2},{"threshold":"tmax_ge_35c","year":2023,"days":2,"first":"2023-08-23","las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