{"icao":"KJMS","name":"Jamestown Regional Airport","lat":46.9297,"lon":-98.6782,"country":"US","tz":"America/Chicago","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":72,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["March","December"],"monthlyHours":[10,7,11,6,2,1,1,8,5,3,6,11],"medianEventHours":2,"season":{"summary":"Fog season runs August through April, peaking in March; fog is mostly a 3 AM\u20139 AM phenomenon; typically thinning out by 2 PM; a typical event lasts about 2 hours (local time, 10-year average).","months":["January","February","March","April","August","September","October","November","December"],"timeOfDay":"3 AM\u20139 AM","typicallyClearsBy":"2 PM"}},"forecast":{"covered":true,"public":true,"cycle":"2026-09-04T13:00:00Z","peakPct":68,"peakAtLocal":"2026-09-04T09:00:00-05:00","window":{"from":"2026-09-04T09:00:00-05:00","to":"2026-09-04T09:00:00-05:00"},"wording":"Yes, fog is likely: 68% chance of fog (visibility under 1 mile) around 9 am Friday, with the fog window roughly 9 am to 9 am local time."},"links":{"page":"https://fogatlas.org/fog/kjms/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KJMS","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KJMS.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}