{"title":"Chicago: Days with 25 cm or more snowfall, days by year","description":"Days by year for Days with 25 cm or more snowfall 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-25cm-snow/","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":"snow_ge_25cm","year":1967,"days":1,"first":"1967-01-26","last":"1967-01-26","longest_streak":1},{"threshold":"snow_ge_25cm","year":1969,"days":1,"first":"1969-12-23","last":"1969-12-23","longest_streak":1},{"threshold":"snow_ge_25cm","year":1975,"days":1,"first":"1975-04-02","last":"1975-04-02","longest_streak":1},{"threshold":"snow_ge_25cm","year":1978,"days":1,"first":"1978-12-31","last":"1978-12-31","longest_streak":1},{"threshold":"snow_ge_25cm","year":1979,"days":1,"first":"1979-01-13","last":"1979-01-13","longest_streak":1},{"threshold":"snow_ge_25cm","year":1999,"days":1,"first":"1999-01-02","last":"1999-01-02","longest_streak":1},{"threshold":"snow_ge_25cm","year":2000,"days":1,"first":"2000-02-18","last":"2000-02-18","longest_streak":1},{"threshold":"snow_ge_25cm","year":2010,"days":1,"first":"2010-02-09","last":"2010-02-09","longest_streak":1},{"threshold":"snow_ge_25cm","year":2011,"days":1,"first":"2011-02-01","last":"2011-02-01","longest_streak":1},{"threshold":"snow_ge_25cm","year":2015,"days":1,"first":"2015-02-01","last":"2015-02-01","longest_streak":1}]}