{"title":"San Francisco II: threshold days by year","description":"Days at or beyond each fixed threshold at San Francisco II, by year.","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/stations/MXN00024154/thresholds/","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_30c","year":1977,"days":4,"first":"1977-04-28","last":"1977-06-22","longest_streak":1},{"threshold":"tmax_ge_30c","year":1983,"days":15,"first":"1983-03-31","last":"1983-06-15","longest_streak":2},{"threshold":"tmax_ge_30c","year":1991,"days":34,"first":"1991-01-05","last":"1991-06-18","longest_streak":5},{"threshold":"tmax_ge_30c","year":1992,"days":9,"first":"1992-06-20","last":"1992-10-01","longest_streak":1},{"threshold":"tmax_ge_30c","year":1994,"days":38,"first":"1994-03-19","last":"1994-07-12","longest_streak":5},{"threshold":"tmax_ge_30c","year":1995,"days":33,"first":"1995-03-21","last":"1995-06-07","longest_streak":16},{"threshold":"tmax_ge_30c","year":1996,"days":26,"first":"1996-04-18","last":"1996-08-07","longest_streak":9},{"threshold":"tmax_ge_30c","year":1997,"days":10,"first":"1997-06-03","last":"1997-08-19","longest_streak":4},{"threshold":"tmax_ge_30c","year":1998,"days":46,"first":"1998-04-03","last":"1998-07-13","longest_streak":14},{"threshold":"tmax_ge_30c","year":1999,"days":18,"first":"1999-04-11","last":"1999-07-01","longest_streak":2},{"threshold":"tmax_ge_30c","year":2000,"days":6,"first":"2000-04-25","last":"2000-05-25","longest_streak":1},{"threshold":"tmax_ge_30c","year":2001,"days":24,"first":"2001-04-02","last":"2001-06-14","longest_streak":13},{"threshold":"tmax_ge_30c","year":2002,"days":10,"first":"2002-04-08","last":"2002-05-26","longest_streak":5},{"threshold":"tmax_ge_30c","year":2006,"days":34,"first":"2006-04-09","last":"2006-10-12","longest_streak":5},{"threshold":"tmax_ge_30c","year":2007,"days":7,"first":"2007-05-02","last":"2007-06-17","longest_streak":1},{"threshold":"tmax_ge_30c","year":2008,"days":33,"first":"2008-01-24","last":"2008-11-07","longest_streak":3},{"threshold":"tmax_ge_30c","year":2009,"days":52,"first":"2009-01-18","last":"2009-11-21","longest_streak":2},{"threshold":"tmax_ge_30c","year":2010,"days":48,"first":"2010-01-01","last":"2010-12-27","longest_streak":2},{"threshold":"tmax_ge_35c","year":1983,"days":1,"first":"1983-04-30","last":"1983-04-30","longest_streak":1},{"threshold":"tmax_ge_35c","year":1991,"days":5,"first":"1991-04-17","last":"1991-06-18","longest_streak":1},{"threshold":"tmax_ge_35c","year":2006,"days":1,"first":"2006-04-10","last":"2006-04-10","longest_streak":1},{"threshold":"tmax_ge_90f","year":1983,"days":1,"first":"1983-04-30","last":"1983-04-30","longest_streak":1},{"threshold":"tmax_ge_90f","year":1991,"days":25,"first":"1991-01-05","last":"1991-06-18","longest_streak":3},{"threshold":"tmax_ge_90f","year":1994,"days":4,"first":"1994-06-13","last":"1994-07-12","longest_streak":1},{"threshold":"tmax_ge_90f","year":1995,"days":3,"first":"1995-05-14","last":"1995-05-21","longest_streak":1},{"threshold":"tmax_ge_90f","year":1996,"days":3,"first":"1996-05-21","last":"1996-05-29","longest_streak":1},{"threshold":"tmax_ge_90f","year":1998,"days":14,"first":"1998-05-07","last":"1998-06-23","longest_streak":4},{"threshold":"tmax_ge_90f","year":2006,"days":2,"first":"2006-04-10","last":"2006-05-01","longest_streak":1},{"threshold":"tmax_ge_90f","year":2009,"days":2,"first":"2009-07-01","last":"2009-10-08","longest_streak":1},{"threshold":"tmax_ge_100f","year":1983,"days":1,"first":"1983-04-30","last":"1983-04-30","longest_streak":1},{"threshold":"tmax_ge_100f","year":2006,"days":1,"first":"2006-04-10","last":"2006-04-10","longest_streak":1},{"threshold":"tmin_le_0c","year":1977,"days":16,"first":"1977-02-05","last":"1977-12-23","longest_streak":3},{"threshold":"tmin_le_0c","year":1991,"days":16,"first":"1991-01-09","last":"1991-11-30","longest_streak":2},{"threshold":"tmin_le_0c","year":1992,"days":24,"first":"1992-01-06","last":"1992-12-31","longest_streak":5},{"threshold":"tmin_le_0c","year":1994,"days":6,"first":"1994-01-05","last":"1994-12-25","longest_streak":2},{"threshold":"tmin_le_0c","year":1995,"days":42,"first":"1995-01-04","last":"1995-12-17","longest_streak":7},{"threshold":"tmin_le_0c","year":1996,"days":47,"first":"1996-01-01","last":"1996-11-22","longest_streak":14},{"threshold":"tmin_le_0c","year":1997,"days":35,"first":"1997-01-03","last":"1997-12-30","longest_streak":8},{"threshold":"tmin_le_0c","year":1998,"days":36,"first":"1998-01-01","last":"1998-12-31","longest_streak":12},{"threshold":"tmin_le_0c","year":1999,"days":43,"first":"1999-01-01","last":"1999-12-24","longest_streak":6},{"threshold":"tmin_le_0c","year":2000,"days":9,"first":"2000-02-03","last":"2000-12-30","longest_streak":3},{"threshold":"tmin_le_0c","year":2001,"days":11,"first":"2001-01-02","last":"2001-03-07","longest_streak":4},{"threshold":"tmin_le_0c","year":2006,"days":43,"first":"2006-01-15","last":"2006-12-31","longest_streak":42},{"threshold":"tmin_le_0c","year":2007,"days":48,"first":"2007-01-03","last":"2007-06-22","longest_streak":13},{"threshold":"tmin_le_0c","year":2008,"days":6,"first":"2008-10-02","last":"2008-12-04","longest_streak":4},{"threshold":"tmin_ge_20c","year":2003,"days":1,"first":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