Fog in Laval, Mayenne

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 Laval-Entrammes Airport (LFOV). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LFOVLaval-Entrammes Airport185 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 Laval, Mayenne fogs in

Fog here concentrates in December and November — about 185 hours in a typical year at LFOV, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LFOV station page.

Fog season

January: ~35 hJanFebruary: ~21 hFebMarch: ~7 hMarApril: ~7 hAprMay: ~3 hMayJune: ~2 hJunJuly: ~1 hJulAugust: ~2 hAugSeptember: ~8 hSepOctober: ~23 hOctNovember: ~36 hNovDecember: ~43 hDec
Fog season runs October through February, peaking in December; fog is mostly a midnight–11 AM phenomenon; typically thinning out by 2 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.