Fog in Andrézieux-Bouthéon, Loire

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 1 hour of dense fog here (10-year average).

Measured at Saint-Étienne-Bouthéon Airport (LFMH). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LFMHSaint-Étienne-Bouthéon Airport56 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 Andrézieux-Bouthéon, Loire fogs in

Fog here concentrates in December and November — about 56 hours in a typical year at LFMH, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LFMH station page.

Fog season

January: ~7 hJanFebruary: ~4 hFebMarch: ~2 hMarApril: ~1 hAprMay: ~2 hMayJune: ~1 hJunJuly: ~1 hJulAugust: ~1 hAugSeptember: ~3 hSepOctober: ~5 hOctNovember: ~7 hNovDecember: ~22 hDec
Fog season runs November through January, peaking in December; fog is mostly a midnight–10 AM phenomenon; typically thinning out by 1 PM; a typical event lasts about 1 hour once it forms local time · 10-yr average

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