{"icao":"KGON","name":"Groton New London Airport","lat":41.3301,"lon":-72.0451,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":88,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["May","June"],"monthlyHours":[6,10,11,7,13,13,10,2,3,3,2,6],"medianEventHours":1,"season":{"summary":"Fog season runs December through July, peaking in May; fog is mostly a 4 AM\u20138 AM phenomenon; typically thinning out by noon; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","April","May","June","July","December"],"timeOfDay":"4 AM\u20138 AM","typicallyClearsBy":"noon"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":1,"peakAtLocal":"2026-09-05T02:00:00-04:00","wording":"No, fog is unlikely in the next 36 hours \u2014 the calibrated forecast peaks at just 1%. September typically brings about 3 hours of dense fog here."},"links":{"page":"https://fogatlas.org/fog/kgon/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KGON","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KGON.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}