{"title":"Chicago: Days with 100 mm or more rain, days by year","description":"Days by year for Days with 100 mm or more rain 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-over-100mm-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_100mm","year":1969,"days":1,"first":"1969-10-10","last":"1969-10-10","longest_streak":1},{"threshold":"prcp_ge_100mm","year":1982,"days":1,"first":"1982-12-02","last":"1982-12-02","longest_streak":1},{"threshold":"prcp_ge_100mm","year":1987,"days":1,"first":"1987-08-14","last":"1987-08-14","longest_streak":1},{"threshold":"prcp_ge_100mm","year":2001,"days":1,"first":"2001-08-30","last":"2001-08-30","longest_streak":1},{"threshold":"prcp_ge_100mm","year":2002,"days":1,"first":"2002-08-22","last":"2002-08-22","longest_streak":1},{"threshold":"prcp_ge_100mm","year":2008,"days":1,"first":"2008-09-13","last":"2008-09-13","longest_streak":1},{"threshold":"prcp_ge_100mm","year":2009,"days":1,"first":"2009-06-19","last":"2009-06-19","longest_streak":1},{"threshold":"prcp_ge_100mm","year":2011,"days":1,"first":"2011-07-23","last":"2011-07-23","longest_streak":1},{"threshold":"prcp_ge_100mm","year":2017,"days":1,"first":"2017-10-14","last":"2017-10-14","longest_streak":1}]}