Fog in Chalons en Champagne

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 2 hours of dense fog here (10-year average).

Measured at Chalons Vatry airport (LFOK). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LFOKChalons Vatry airport183 h/yrclimatology

Fog is measured where instruments live — airports. Hours/yr = time below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), the aviation definition of seriously dense fog.

When Chalons en Champagne fogs in

Fog here concentrates in December and November — about 183 hours in a typical year at LFOK, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LFOK station page.

Fog season

January: ~39 hJanFebruary: ~11 hFebMarch: ~5 hMarApril: ~3 hAprMay: ~5 hMayJune: ~2 hJunJuly: ~1 hJulAugust: ~2 hAugSeptember: ~7 hSepOctober: ~19 hOctNovember: ~39 hNovDecember: ~54 hDec
Fog season runs October through January, peaking in December; fog is mostly a 11 PM–noon phenomenon; typically thinning out by 4 PM; a typical event lasts about 2 hours once it forms local time · 10-yr average

Machine access: data.json · llms.txt · forecast verification. Not for operational use.