Fog in Baton Rouge, LA

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 3 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Baton Rouge Metropolitan Airport (KBTR). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KBTRBaton Rouge Metropolitan Airport49 h/yrverifying

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 Baton Rouge fogs in

Fog here concentrates in December and November — about 49 hours in a typical year at KBTR, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KBTR station page.

Fog season

January: ~6 hJanFebruary: ~5 hFebMarch: ~2 hMarApril: ~2 hAprMay: ~1 hMayJune: ~0 hJunJuly: ~1 hJulAugust: ~3 hAugSeptember: ~1 hSepOctober: ~6 hOctNovember: ~8 hNovDecember: ~15 hDec
Fog season runs October through February, peaking in December; fog is mostly a 4 AM–8 AM phenomenon; typically thinning out by 9 AM; 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.