{"title":"Seattle: Tropical nights (min at or above 20 C), days by year","description":"Days by year for Tropical nights (min at or above 20 C) in Seattle.","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/seattle/nights-above-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_ge_20c","year":1974,"days":1,"first":"1974-09-02","last":"1974-09-02","longest_streak":1},{"threshold":"tmin_ge_20c","year":1981,"days":1,"first":"1981-08-09","last":"1981-08-09","longest_streak":1},{"threshold":"tmin_ge_20c","year":1996,"days":1,"first":"1996-07-14","last":"1996-07-14","longest_streak":1},{"threshold":"tmin_ge_20c","year":2004,"days":1,"first":"2004-07-23","last":"2004-07-23","longest_streak":1},{"threshold":"tmin_ge_20c","year":2006,"days":1,"first":"2006-07-22","last":"2006-07-22","longest_streak":1},{"threshold":"tmin_ge_20c","year":2009,"days":2,"first":"2009-07-28","last":"2009-07-29","longest_streak":2},{"threshold":"tmin_ge_20c","year":2016,"days":1,"first":"2016-08-19","last":"2016-08-19","longest_streak":1},{"threshold":"tmin_ge_20c","year":2017,"days":2,"first":"2017-08-02","last":"2017-08-03","longest_streak":2},{"threshold":"tmin_ge_20c","year":2021,"days":4,"first":"2021-06-26","last":"2021-08-13","longest_streak":2},{"threshold":"tmin_ge_20c","year":2022,"days":1,"first":"2022-08-18","last":"2022-08-18","longest_streak":1},{"threshold":"tmin_ge_20c","year":2023,"days":2,"first":"2023-08-14","last":"2023-08-15","longest_streak":2},{"threshold":"tmin_ge_20c","year":2025,"days":1,"first":"2025-08-11","last":"2025-08-11","longest_streak":1}]}