{"city":"Greenville/Greer/Spartanburg","region":"US-SC","country":"US","slug":"greenville-greer-spartanburg-sc","updated":"2026-08-16T02:45Z","window":{"start":"2016-01-01","through":"2026-08-15"},"stations":[{"icao":"KGSP","name":"Greenville-Spartanburg International Airport","subCat1HoursPerYear":44,"forecast":"verifying"}],"primaryStation":"KGSP","forecast":{"covered":true,"public":false,"cycle":"2026-08-16T00:00:00Z","guidanceSignal":false,"wording":"No fog signal in NWS guidance for the next 48 hours. August typically brings about 1 hour of dense fog here."},"climatology":{"subCat1HoursPerYear":44,"fogSeasonPeakMonths":["December","January"],"medianEventHours":2,"season":{"summary":"Fog season runs October through March, peaking in December; fog is mostly a 2 AM\u20139 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","October","November","December"],"timeOfDay":"2 AM\u20139 AM","typicallyClearsBy":"11 AM"}},"links":{"page":"https://fogatlas.org/fog/city/greenville-greer-spartanburg-sc/","stationPages":["https://fogatlas.org/fog/kgsp/"],"verification":"https://fogatlas.org/fog/scorecard/"}}