{"title":"San Marcos Tlazalpan: threshold days by year","description":"Days at or beyond each fixed threshold at San Marcos Tlazalpan, 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/MXN00015142/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":"tmin_le_0c","year":1974,"days":122,"first":"1974-01-01","last":"1974-12-31","longest_streak":27},{"threshold":"tmin_le_0c","year":1975,"days":110,"first":"1975-01-01","last":"1975-12-31","longest_streak":16},{"threshold":"tmin_le_0c","year":1976,"days":97,"first":"1976-01-01","last":"1976-12-28","longest_streak":66},{"threshold":"tmin_le_0c","year":1977,"days":124,"first":"1977-01-01","last":"1977-12-31","longest_streak":33},{"threshold":"tmin_le_0c","year":1978,"days":90,"first":"1978-01-01","last":"1978-12-31","longest_streak":35},{"threshold":"tmin_le_0c","year":1979,"days":129,"first":"1979-01-01","last":"1979-12-31","longest_streak":28},{"threshold":"tmin_le_0c","year":1980,"days":126,"first":"1980-01-01","last":"1980-12-31","longest_streak":35},{"threshold":"tmin_le_0c","year":1981,"days":103,"first":"1981-01-01","last":"1981-12-31","longest_streak":95},{"threshold":"tmin_le_0c","year":1982,"days":149,"first":"1982-01-01","last":"1982-12-30","longest_streak":21},{"threshold":"tmin_le_0c","year":1983,"days":139,"first":"1983-01-03","last":"1983-12-31","longest_streak":99},{"threshold":"tmin_le_0c","year":1984,"days":154,"first":"1984-01-01","last":"1984-12-31","longest_streak":75},{"threshold":"tmin_le_0c","year":1985,"days":167,"first":"1985-01-01","last":"1985-12-31","longest_streak":39},{"threshold":"tmin_le_0c","year":1986,"days":131,"first":"1986-01-01","last":"1986-12-31","longest_streak":33},{"threshold":"tmin_le_0c","year":1990,"days":125,"first":"1990-01-01","last":"1990-12-31","longest_streak":35},{"threshold":"tmin_le_0c","year":1991,"days":117,"first":"1991-01-01","last":"1991-12-31","longest_streak":28},{"threshold":"tmin_le_0c","year":1993,"days":140,"first":"1993-01-01","last":"1993-12-31","longest_streak":36},{"threshold":"tmin_le_0c","year":1996,"days":155,"first":"1996-01-02","last":"1996-12-31","longest_streak":64},{"threshold":"tmin_le_0c","year":1997,"days":124,"first":"1997-01-01","last":"1997-12-31","longest_streak":22},{"threshold":"tmin_le_0c","year":1998,"days":78,"first":"1998-01-15","last":"1998-12-31","longest_streak":60},{"threshold":"tmin_le_0c","year":1999,"days":125,"first":"1999-01-01","last":"1999-12-31","longest_streak":112},{"threshold":"tmin_le_0c","year":2000,"days":140,"first":"2000-01-01","last":"2000-12-31","longest_streak":43},{"threshold":"tmin_le_m10c","year":1975,"days":4,"first":"1975-01-14","last":"1975-12-31","longest_streak":2},{"threshold":"tmin_le_m10c","year":1976,"days":6,"first":"1976-01-01","last":"1976-02-29","longest_streak":5},{"threshold":"tmin_le_m10c","year":1980,"days":2,"first":"1980-12-29","last":"1980-12-31","longest_streak":1},{"threshold":"tmin_le_m10c","year":1982,"days":2,"first":"1982-12-19","last":"1982-12-20","longest_streak":2},{"threshold":"tmin_le_m10c","year":1983,"days":1,"first":"1983-02-03","last":"1983-02-03","longest_streak":1},{"threshold":"tmin_le_m10c","year":1986,"days":1,"first":"1986-01-13","last":"1986-01-13","longest_streak":1},{"threshold":"tmin_le_m10c","year":1999,"days":2,"first":"1999-01-04","last":"1999-02-13","longest_streak":1},{"threshold":"tmin_le_m10c","year":2000,"days":1,"first":"2000-01-21","last":"2000-01-21","longest_streak":1},{"threshold":"prcp_ge_10mm","year":1966,"days":33,"first":"1966-01-06","last":"1966-10-18","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1967,"days":23,"first":"1967-03-20","last":"1967-12-01","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1968,"days":24,"first":"1968-02-01","last":"1968-10-06","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1970,"days":27,"first":"1970-05-02","last":"1970-10-29","longest_streak":4},{"threshold":"prcp_ge_10mm","year":1971,"days":32,"first":"1971-05-23","last":"1971-10-01","longest_streak":4},{"threshold":"prcp_ge_10mm","year":1972,"days":25,"first":"1972-03-12","last":"1972-10-22","longest_streak":2},{"threshold":"prcp_ge_10mm","year":1973,"days":25,"first":"1973-05-12","last":"1973-11-27","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1974,"days":22,"first":"1974-05-01","last":"1974-11-17","longest_streak":4},{"threshold":"prcp_ge_10mm","year":1975,"days":17,"first":"1975-01-21","last":"1975-09-05","longest_streak":2},{"threshold":"prcp_ge_10mm","year":1976,"days":34,"first":"1976-04-09","last":"1976-10-12","longest_streak":4},{"threshold":"prcp_ge_10mm","year":1977,"days":18,"first":"1977-05-07","last":"1977-10-01","longest_streak":2},{"threshold":"prcp_ge_10mm","year":1978,"days":21,"first":"1978-02-07","last":"1978-12-09","longest_streak":4},{"threshold":"prcp_ge_10mm","year":1979,"days":6,"first":"1979-06-05","last":"1979-12-14","longest_streak":1},{"threshold":"prcp_ge_10mm","year":1980,"days":11,"first":"1980-01-24","last":"1980-09-28","longest_streak":2},{"threshold":"prcp_ge_10mm","year":1981,"days":3,"first":"1981-01-18","last":"1981-07-21","longest_streak":1},{"threshold":"prcp_ge_10mm","year":1985,"days":9,"first":"1985-06-03","last":"1985-07-23","longest_streak":2},{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