{"title":"Denver: Days with min at or below -20 C, days by year","description":"Days by year for Days with min at or below -20 C in Denver.","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/denver/days-below-minus-20c/","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":"tmin_le_m20c","year":1996,"days":8,"first":"1996-01-06","last":"1996-12-19","longest_streak":3},{"threshold":"tmin_le_m20c","year":1997,"days":5,"first":"1997-01-11","last":"1997-01-17","longest_streak":4},{"threshold":"tmin_le_m20c","year":1998,"days":5,"first":"1998-12-20","last":"1998-12-24","longest_streak":5},{"threshold":"tmin_le_m20c","year":2001,"days":1,"first":"2001-02-09","last":"2001-02-09","longest_streak":1},{"threshold":"tmin_le_m20c","year":2002,"days":2,"first":"2002-02-26","last":"2002-03-02","longest_streak":1},{"threshold":"tmin_le_m20c","year":2003,"days":2,"first":"2003-02-07","last":"2003-02-24","longest_streak":1},{"threshold":"tmin_le_m20c","year":2004,"days":4,"first":"2004-01-05","last":"2004-12-23","longest_streak":2},{"threshold":"tmin_le_m20c","year":2005,"days":2,"first":"2005-12-07","last":"2005-12-08","longest_streak":2},{"threshold":"tmin_le_m20c","year":2006,"days":3,"first":"2006-02-17","last":"2006-02-19","longest_streak":3},{"threshold":"tmin_le_m20c","year":2007,"days":3,"first":"2007-01-13","last":"2007-02-02","longest_streak":2},{"threshold":"tmin_le_m20c","year":2008,"days":5,"first":"2008-12-04","last":"2008-12-16","longest_streak":3},{"threshold":"tmin_le_m20c","year":2009,"days":2,"first":"2009-01-27","last":"2009-12-09","longest_streak":1},{"threshold":"tmin_le_m20c","year":2010,"days":3,"first":"2010-01-06","last":"2010-01-08","longest_streak":3},{"threshold":"tmin_le_m20c","year":2011,"days":8,"first":"2011-01-12","last":"2011-12-06","longest_streak":3},{"threshold":"tmin_le_m20c","year":2012,"days":2,"first":"2012-01-11","last":"2012-01-12","longest_streak":2},{"threshold":"tmin_le_m20c","year":2014,"days":11,"first":"2014-01-05","last":"2014-12-31","longest_streak":4},{"threshold":"tmin_le_m20c","year":2015,"days":4,"first":"2015-01-03","last":"2015-02-27","longest_streak":3},{"threshold":"tmin_le_m20c","year":2016,"days":4,"first":"2016-12-07","last":"2016-12-18","longest_streak":2},{"threshold":"tmin_le_m20c","year":2017,"days":1,"first":"2017-01-06","last":"2017-01-06","longest_streak":1},{"threshold":"tmin_le_m20c","year":2018,"days":1,"first":"2018-02-21","last":"2018-02-21","longest_streak":1},{"threshold":"tmin_le_m20c","year":2019,"days":5,"first":"2019-01-01","last":"2019-03-04","longest_streak":2},{"threshold":"tmin_le_m20c","year":2020,"days":2,"first":"2020-02-04","last":"2020-02-05","longest_streak":2},{"threshold":"tmin_le_m20c","year":2021,"days":3,"first":"2021-02-13","last":"2021-02-15","longest_streak":3},{"threshold":"tmin_le_m20c","year":2022,"days":7,"first":"2022-01-01","last":"2022-12-23","longest_streak":3},{"threshold":"tmin_le_m20c","year":2023,"days":5,"first":"2023-01-29","last":"2023-02-23","longest_streak":3},{"threshold":"tmin_le_m20c","year":2024,"days":4,"first":"2024-01-13","last":"2024-01-16","longest_streak":4},{"threshold":"tmin_le_m20c","year":2025,"days":4,"first":"2025-01-18","last":"2025-02-19","longest_streak":3},{"threshold":"tmin_le_m20c","year":2026,"days":2,"first":"2026-01-25","last":"2026-01-26","longest_streak":2}]}