{"title":"Lake Cowichan: threshold days by year","description":"Days at or beyond each fixed threshold at Lake Cowichan, 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/CA001012055/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":1961,"days":16,"first":"1961-06-01","last":"1961-08-22","longest_streak":4},{"threshold":"tmax_ge_30c","year":1962,"days":6,"first":"1962-07-22","last":"1962-07-30","longest_streak":3},{"threshold":"tmax_ge_30c","year":1963,"days":4,"first":"1963-06-15","last":"1963-09-09","longest_streak":1},{"threshold":"tmax_ge_30c","year":1965,"days":10,"first":"1965-07-03","last":"1965-08-18","longest_streak":4},{"threshold":"tmax_ge_30c","year":1966,"days":1,"first":"1966-08-23","last":"1966-08-23","longest_streak":1},{"threshold":"tmax_ge_30c","year":1967,"days":19,"first":"1967-06-18","last":"1967-09-16","longest_streak":11},{"threshold":"tmax_ge_30c","year":1968,"days":12,"first":"1968-07-02","last":"1968-08-10","longest_streak":3},{"threshold":"tmax_ge_30c","year":1969,"days":6,"first":"1969-06-09","last":"1969-09-10","longest_streak":4},{"threshold":"tmax_ge_30c","year":1970,"days":8,"first":"1970-06-01","last":"1970-08-23","longest_streak":2},{"threshold":"tmax_ge_30c","year":1971,"days":14,"first":"1971-07-17","last":"1971-08-11","longest_streak":5},{"threshold":"tmax_ge_30c","year":1972,"days":12,"first":"1972-07-04","last":"1972-09-03","longest_streak":3},{"threshold":"tmax_ge_30c","year":1973,"days":10,"first":"1973-05-14","last":"1973-09-05","longest_streak":2},{"threshold":"tmax_ge_30c","year":1974,"days":10,"first":"1974-07-28","last":"1974-09-24","longest_streak":3},{"threshold":"tmax_ge_30c","year":1975,"days":5,"first":"1975-07-04","last":"1975-07-26","longest_streak":2},{"threshold":"tmax_ge_30c","year":1978,"days":11,"first":"1978-06-01","last":"1978-08-09","longest_streak":4},{"threshold":"tmax_ge_30c","year":1983,"days":3,"first":"1983-05-28","last":"1983-08-07","longest_streak":2},{"threshold":"tmax_ge_35c","year":1965,"days":3,"first":"1965-07-30","last":"1965-08-01","longest_streak":3},{"threshold":"tmax_ge_35c","year":1967,"days":1,"first":"1967-08-16","last":"1967-08-16","longest_streak":1},{"threshold":"tmax_ge_35c","year":1969,"days":2,"first":"1969-06-16","last":"1969-06-17","longest_streak":2},{"threshold":"tmax_ge_35c","year":1978,"days":1,"first":"1978-08-08","last":"1978-08-08","longest_streak":1},{"threshold":"tmax_ge_35c","year":1983,"days":1,"first":"1983-05-29","last":"1983-05-29","longest_streak":1},{"threshold":"tmax_ge_90f","year":1961,"days":6,"first":"1961-07-11","last":"1961-08-19","longest_streak":3},{"threshold":"tmax_ge_90f","year":1965,"days":5,"first":"1965-07-29","last":"1965-08-18","longest_streak":4},{"threshold":"tmax_ge_90f","year":1966,"days":1,"first":"1966-08-23","last":"1966-08-23","longest_streak":1},{"threshold":"tmax_ge_90f","year":1967,"days":7,"first":"1967-08-10","last":"1967-08-29","longest_streak":4},{"threshold":"tmax_ge_90f","year":1968,"days":2,"first":"1968-07-08","last":"1968-07-27","longest_streak":1},{"threshold":"tmax_ge_90f","year":1969,"days":5,"first":"1969-06-09","last":"1969-06-18","longest_streak":4},{"threshold":"tmax_ge_90f","year":1970,"days":1,"first":"1970-07-15","last":"1970-07-15","longest_streak":1},{"threshold":"tmax_ge_90f","year":1971,"days":9,"first":"1971-07-18","last":"1971-08-11","longest_streak":4},{"threshold":"tmax_ge_90f","year":1972,"days":3,"first":"1972-07-05","last":"1972-08-07","longest_streak":2},{"threshold":"tmax_ge_90f","year":1973,"days":1,"first":"1973-09-05","last":"1973-09-05","longest_streak":1},{"threshold":"tmax_ge_90f","year":1974,"days":3,"first":"1974-08-28","last":"1974-08-30","longest_streak":3},{"threshold":"tmax_ge_90f","year":1978,"days":3,"first":"1978-07-22","last":"1978-08-08","longest_streak":2},{"threshold":"tmax_ge_90f","year":1983,"days":2,"first":"1983-05-28","last":"1983-05-29","longest_streak":2},{"threshold":"tmax_le_0c","year":1961,"days":3,"first":"1961-12-10","last":"1961-12-12","longest_streak":3},{"threshold":"tmax_le_0c","year":1962,"days":6,"first":"1962-01-18","last":"1962-03-02","longest_streak":3},{"threshold":"tmax_le_0c","year":1963,"days":3,"first":"1963-01-10","last":"1963-01-29","longest_streak":2},{"threshold":"tmax_le_0c","year":1964,"days":4,"first":"1964-12-15","last":"1964-12-18","longest_streak":4},{"threshold":"tmax_le_0c","year":1965,"days":2,"first":"1965-12-28","last":"1965-12-31","longest_streak":1},{"threshold":"tmax_le_0c","year":1966,"days":2,"first":"1966-01-03","last":"1966-01-04","longest_streak":2},{"threshold":"tmax_le_0c","year":1967,"days":2,"first":"1967-12-19","last":"1967-12-20","longest_streak":2},{"threshold":"tmax_le_0c","year":1968,"days":5,"first":"1968-01-26","last":"1968-12-27","longest_streak":4},{"threshold":"tmax_le_0c","year":1969,"days":12,"first":"1969-01-17","last":"1969-01-30","longest_streak":11},{"threshold":"tmax_le_0c","year":1970,"days":2,"first":"1970-11-21","last":"1970-12-22","longest_streak":1},{"threshold":"tmax_le_0c","year":1971,"days":8,"first":"1971-01-03","last":"1971-12-29","longest_streak":3},{"threshold":"tmax_le_0c","year":1972,"days":15,"first":"1972-01-13","last":"1972-12-11","longest_streak":8},{"threshold":"tmax_le_0c","year":1973,"days":6,"first":"1973-01-03","last":"1973-01-08","longest_streak":6},{"threshold":"tmax_le_0c","year":1974,"days":1,"first":"1974-01-06","last":"1974-01-06","longest_streak":1},{"threshold":"tmax_le_0c","year":1975,"days":3,"first":"1975-01-09","last":"1975-11-29","longest_streak":2},{"threshold":"tmax_le_0c","year":1976,"days":1,"first":"1976-03-03","last":"1976-03-03","longest_streak":1},{"threshold":"tmax_le_0c","year":1978,"days":4,"first":"1978-12-28","last":"1978-12-31","longest_streak":5},{"threshold":"tmax_le_0c","year":1983,"days":7,"first":"1983-12-19","last":"1983-12-28","longest_streak":6},{"threshold":"tmin_le_0c","year":1961,"days":62,"first":"1961-01-01","last":"1961-12-26","longest_streak":9},{"threshold":"tmin_le_0c","year":1962,"days":57,"first":"1962-01-01","last":"1962-12-26","longest_streak":11},{"threshold":"tmin_le_0c","year":1963,"days":62,"first":"1963-01-07","last":"1963-12-13","longest_streak":16},{"threshold":"tmin_le_0c","year":1964,"days":90,"first":"1964-01-02","last":"1964-12-31","longest_streak":18},{"threshold":"tmin_le_0c","year":1965,"days":77,"first":"1965-01-05","last":"1965-12-31","longest_streak":16},{"threshold":"tmin_le_0c","year":1966,"days":63,"first":"1966-01-01","last":"1966-12-27","longest_streak":7},{"threshold":"tmin_le_0c","year":1967,"days":65,"first":"1967-01-02","last":"1967-12-21","longest_streak":11},{"threshold":"tmin_le_0c","year":1968,"days":79,"first":"1968-01-01","last":"1968-12-31","longest_streak":14},{"threshold":"tmin_le_0c","year":1969,"days":88,"first":"1969-01-01","last":"1969-12-27","longest_streak":28},{"threshold":"tmin_le_0c","year":1970,"days":105,"first":"1970-01-01","last":"1970-12-31","longest_streak":15},{"threshold":"tmin_le_0c","year":1971,"days":99,"first":"1971-01-01","last":"1971-12-31","longest_streak":29},{"threshold":"tmin_le_0c","year":1972,"days":112,"first":"1972-01-01","last":"1972-12-31","longest_streak":15},{"threshold":"tmin_le_0c","year":1973,"days":70,"first":"1973-01-02","last":"1973-12-31","longest_streak":14},{"threshold":"tmin_le_0c","year":1974,"days":58,"first":"1974-01-01","last":"1974-12-31","longest_streak":17},{"threshold":"tmin_le_0c","year":1975,"days":107,"first":"1975-01-01","last":"1975-12-31","longest_streak":19},{"threshold":"tmin_le_0c","year":1976,"days":85,"first":"1976-01-01","last":"1976-12-31","longest_streak":17},{"threshold":"tmin_le_0c","year":1977,"days":82,"first":"1977-01-01","last":"1977-12-31","longest_streak":10},{"threshold":"tmin_le_0c","year":1978,"days":65,"first":"1978-01-01","last":"1978-12-31","longest_streak":18},{"threshold":"tmin_le_0c","year":1983,"days":57,"first":"1983-01-01","last":"1983-12-30","longest_streak":16},{"threshold":"tmin_le_m10c","year":1962,"days":4,"first":"1962-01-19","last":"1962-02-26","longest_streak":3},{"threshold":"tmin_le_m10c","year":1963,"days":1,"first":"1963-01-11","last":"1963-01-11","longest_streak":1},{"threshold":"tmin_le_m10c","year":1964,"days":2,"first":"1964-12-16","last":"1964-12-17","longest_streak":2},{"threshold":"tmin_le_m10c","year":1968,"days":3,"first":"1968-12-28","last":"1968-12-30","longest_streak":3},{"threshold":"tmin_le_m10c","year":1969,"days":8,"first":"1969-01-17","last":"1969-01-30","longest_streak":4},{"threshold":"tmin_le_m10c","year":1971,"days":1,"first":"1971-12-27","last":"1971-12-27","longest_streak":1},{"threshold":"tmin_le_m10c","year":1972,"days":9,"first":"1972-01-26","last":"1972-12-10","longest_streak":3},{"threshold":"tmin_le_m10c","year":1973,"days":2,"first":"1973-01-06","last":"1973-01-07","longest_streak":2},{"threshold":"tmin_le_m10c","year":1974,"days":5,"first":"1974-01-03","last":"1974-01-09","longest_streak":2},{"threshold":"tmin_le_m10c","year":1978,"days":3,"first":"1978-12-29","last":"1978-12-31","longest_streak":4},{"threshold":"tmin_le_m10c","year":1983,"days":4,"first":"1983-12-21","last":"1983-12-24","longest_streak":4},{"threshold":"tmin_ge_20c","year":1983,"days":1,"first":"1983-05-30","last":"1983-05-30","longest_streak":1},{"threshold":"prcp_ge_10mm","year":1961,"days":88,"first":"1961-01-03","last":"1961-12-28","longest_streak":9},{"threshold":"prcp_ge_10mm","year":1962,"days":64,"first":"1962-01-01","last":"1962-12-31","longest_streak":6},{"threshold":"prcp_ge_10mm","year":1963,"days":69,"first":"1963-01-01","last":"1963-12-31","longest_streak":7},{"threshold":"prcp_ge_10mm","year":1964,"days":53,"first":"1964-01-02","last":"1964-12-31","longest_streak":4},{"threshold":"prcp_ge_10mm","year":1965,"days":66,"first":"1965-01-05","last":"1965-12-30","longest_streak":5},{"threshold":"prcp_ge_10mm","year":1966,"days":75,"first":"1966-01-01","last":"1966-12-31","longest_streak":9},{"threshold":"prcp_ge_10mm","year":1967,"days":78,"first":"1967-01-02","last":"1967-12-24","longest_streak":15},{"threshold":"prcp_ge_10mm","year":1968,"days":74,"first":"1968-01-07","last":"1968-12-30","longest_streak":13},{"threshold":"prcp_ge_10mm","year":1969,"days":63,"first":"1969-01-02","last":"1969-12-23","longest_streak":5},{"threshold":"prcp_ge_10mm","year":1970,"days":57,"first":"1970-01-08","last":"1970-12-29","longest_streak":6},{"threshold":"prcp_ge_10mm","year":1971,"days":70,"first":"1971-01-07","last":"1971-12-22","longest_streak":5},{"threshold":"prcp_ge_10mm","year":1972,"days":60,"first":"1972-01-07","last":"1972-12-26","longest_streak":7},{"threshold":"prcp_ge_10mm","year":1973,"days":57,"first":"1973-01-01","last":"1973-12-23","longest_streak":7},{"threshold":"prcp_ge_10mm","year":1974,"days":77,"first":"1974-01-12","last":"1974-12-29","longest_streak":7},{"threshold":"prcp_ge_10mm","year":1975,"days":73,"first":"1975-01-02","last":"1975-12-29","longest_streak":6},{"threshold":"prcp_ge_10mm","year":1976,"days":47,"first":"1976-01-03","last":"1976-12-25","longest_streak":7},{"threshold":"prcp_ge_10mm","year":1977,"days":51,"first":"1977-01-16","last":"1977-12-15","longest_streak":7},{"threshold":"prcp_ge_10mm","year":1978,"days":37,"first":"1978-01-03","last":"1978-12-21","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1983,"days":78,"first":"1983-01-01","last":"1983-12-30","longest_streak":9},{"threshold":"prcp_ge_25mm","year":1961,"days":33,"first":"1961-01-03","last":"1961-12-28","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1962,"days":24,"first":"1962-01-02","last":"1962-12-31","longest_streak":4},{"threshold":"prcp_ge_25mm","year":1963,"days":25,"first":"1963-01-02","last":"1963-12-31","longest_streak":4},{"threshold":"prcp_ge_25mm","year":1964,"days":20,"first":"1964-01-02","last":"1964-12-31","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1965,"days":27,"first":"1965-01-26","last":"1965-12-29","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1966,"days":33,"first":"1966-01-03","last":"1966-12-18","longest_streak":4},{"threshold":"prcp_ge_25mm","year":1967,"days":31,"first":"1967-01-02","last":"1967-12-21","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1968,"days":28,"first":"1968-01-08","last":"1968-12-30","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1969,"days":23,"first":"1969-01-10","last":"1969-12-22","longest_streak":4},{"threshold":"prcp_ge_25mm","year":1970,"days":27,"first":"1970-01-08","last":"1970-12-28","longest_streak":2},{"threshold":"prcp_ge_25mm","year":1971,"days":16,"first":"1971-01-15","last":"1971-11-09","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1972,"days":18,"first":"1972-01-07","last":"1972-12-25","longest_streak":2},{"threshold":"prcp_ge_25mm","year":1973,"days":23,"first":"1973-01-11","last":"1973-12-19","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1974,"days":28,"first":"1974-01-12","last":"1974-12-29","longest_streak":4},{"threshold":"prcp_ge_25mm","year":1975,"days":32,"first":"1975-01-16","last":"1975-12-28","longest_streak":4},{"threshold":"prcp_ge_25mm","year":1976,"days":18,"first":"1976-01-10","last":"1976-12-25","longest_streak":2},{"threshold":"prcp_ge_25mm","year":1977,"days":21,"first":"1977-01-17","last":"1977-12-10","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1978,"days":10,"first":"1978-01-03","last":"1978-12-10","longest_streak":1},{"threshold":"prcp_ge_25mm","year":1983,"days":27,"first":"1983-01-04","last":"1983-12-12","longest_streak":5},{"threshold":"prcp_ge_50mm","year":1961,"days":10,"first":"1961-01-04","last":"1961-12-21","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1962,"days":8,"first":"1962-01-02","last":"1962-12-31","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1963,"days":7,"first":"1963-02-02","last":"1963-12-22","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1964,"days":7,"first":"1964-01-15","last":"1964-11-23","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1965,"days":5,"first":"1965-02-03","last":"1965-12-05","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1966,"days":6,"first":"1966-01-05","last":"1966-12-12","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1967,"days":8,"first":"1967-01-18","last":"1967-12-21","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1968,"days":7,"first":"1968-01-12","last":"1968-12-23","longest_streak":3},{"threshold":"prcp_ge_50mm","year":1969,"days":3,"first":"1969-02-10","last":"1969-12-22","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1970,"days":8,"first":"1970-01-18","last":"1970-12-06","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1971,"days":5,"first":"1971-01-15","last":"1971-11-09","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1972,"days":6,"first":"1972-09-20","last":"1972-12-25","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1973,"days":6,"first":"1973-05-23","last":"1973-12-15","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1974,"days":8,"first":"1974-01-12","last":"1974-12-20","longest_streak":3},{"threshold":"prcp_ge_50mm","year":1975,"days":9,"first":"1975-10-03","last":"1975-12-25","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1976,"days":3,"first":"1976-01-26","last":"1976-12-25","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1977,"days":3,"first":"1977-03-08","last":"1977-12-10","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1978,"days":2,"first":"1978-01-07","last":"1978-03-06","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1983,"days":6,"first":"1983-02-10","last":"1983-11-15","longest_streak":2},{"threshold":"prcp_ge_100mm","year":1961,"days":1,"first":"1961-01-14","last":"1961-01-14","longest_streak":1},{"threshold":"prcp_ge_100mm","year":1963,"days":2,"first":"1963-10-21","last":"1963-12-22","longest_streak":1},{"threshold":"prcp_ge_100mm","year":1967,"days":1,"first":"1967-12-21","last":"1967-12-21","longest_streak":1},{"threshold":"prcp_ge_100mm","year":1968,"days":1,"first":"1968-01-18","last":"1968-01-18","longest_streak":1},{"threshold":"prcp_ge_100mm","year":1970,"days":1,"first":"1970-04-08","last":"1970-04-08","longest_streak":1},{"threshold":"prcp_ge_100mm","year":1972,"days":1,"first":"1972-09-20","last":"1972-09-20","longest_streak":1},{"threshold":"prcp_ge_100mm","year":1983,"days":1,"first":"1983-11-14","last":"1983-11-14","longest_streak":1},{"threshold":"snow_ge_10cm","year":1961,"days":1,"first":"1961-12-12","last":"1961-12-12","longest_streak":1},{"threshold":"snow_ge_10cm","year":1962,"days":2,"first":"1962-01-23","last":"1962-03-04","longest_streak":1},{"threshold":"snow_ge_10cm","year":1964,"days":5,"first":"1964-01-19","last":"1964-12-28","longest_streak":2},{"threshold":"snow_ge_10cm","year":1965,"days":6,"first":"1965-01-05","last":"1965-12-30","longest_streak":3},{"threshold":"snow_ge_10cm","year":1966,"days":6,"first":"1966-01-01","last":"1966-03-19","longest_streak":5},{"threshold":"snow_ge_10cm","year":1967,"days":1,"first":"1967-03-09","last":"1967-03-09","longest_streak":1},{"threshold":"snow_ge_10cm","year":1968,"days":7,"first":"1968-01-08","last":"1968-12-30","longest_streak":2},{"threshold":"snow_ge_10cm","year":1969,"days":7,"first":"1969-01-08","last":"1969-02-07","longest_streak":3},{"threshold":"snow_ge_10cm","year":1970,"days":4,"first":"1970-12-01","last":"1970-12-29","longest_streak":2},{"threshold":"snow_ge_10cm","year":1971,"days":11,"first":"1971-01-10","last":"1971-12-21","longest_streak":2},{"threshold":"snow_ge_10cm","year":1972,"days":3,"first":"1972-01-10","last":"1972-12-15","longest_streak":1},{"threshold":"snow_ge_10cm","year":1973,"days":1,"first":"1973-01-27","last":"1973-01-27","longest_streak":1},{"threshold":"snow_ge_10cm","year":1974,"days":1,"first":"1974-01-30","last":"1974-01-30","longest_streak":1},{"threshold":"snow_ge_10cm","year":1975,"days":6,"first":"1975-01-07","last":"1975-12-12","longest_streak":1},{"threshold":"snow_ge_10cm","year":1976,"days":4,"first":"1976-02-24","last":"1976-02-28","longest_streak":3},{"threshold":"snow_ge_10cm","year":1977,"days":2,"first":"1977-11-23","last":"1977-12-05","longest_streak":1},{"threshold":"snow_ge_10cm","year":1978,"days":1,"first":"1978-01-03","last":"1978-01-03","longest_streak":1},{"threshold":"snow_ge_10cm","year":1983,"days":1,"first":"1983-12-07","last":"1983-12-07","longest_streak":1},{"threshold":"snow_ge_25cm","year":1964,"days":1,"first":"1964-12-18","last":"1964-12-18","longest_streak":1},{"threshold":"snow_ge_25cm","year":1966,"days":1,"first":"1966-01-03","last":"1966-01-03","longest_streak":1},{"threshold":"snow_ge_25cm","year":1968,"days":1,"first":"1968-12-30","last":"1968-12-30","longest_streak":1},{"threshold":"snow_ge_25cm","year":1969,"days":1,"first":"1969-01-10","last":"1969-01-10","longest_streak":1},{"threshold":"snow_ge_25cm","year":1972,"days":1,"first":"1972-01-18","last":"1972-01-18","longest_streak":1},{"threshold":"snow_ge_25cm","year":1975,"days":2,"first":"1975-02-11","last":"1975-12-12","longest_streak":1},{"threshold":"snow_ge_25cm","year":1978,"days":1,"first":"1978-01-03","last":"1978-01-03","longest_streak":1},{"threshold":"snow_ge_50cm","year":1975,"days":1,"first":"1975-12-12","last":"1975-12-12","longest_streak":1}]}