{"title":"Washington, D.C.: Days at or above 40 C, days by year","description":"Days by year for Days at or above 40 C in Washington, D.C..","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/washington-dc/days-above-40c/","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_40c","year":1988,"days":1,"first":"1988-07-16","last":"1988-07-16","longest_streak":1},{"threshold":"tmax_ge_40c","year":1997,"days":1,"first":"1997-08-17","last":"1997-08-17","longest_streak":1},{"threshold":"tmax_ge_40c","year":2011,"days":1,"first":"2011-07-29","last":"2011-07-29","longest_streak":1},{"threshold":"tmax_ge_40c","year":2012,"days":2,"first":"2012-06-29","last":"2012-07-07","longest_streak":1},{"threshold":"tmax_ge_40c","year":2024,"days":1,"first":"2024-07-16","last":"2024-07-16","longest_streak":1}]}