Fog in Jackson, MS

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 1 hour of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Jackson-Medgar Wiley Evers International Airport (KJAN). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KJANJackson-Medgar Wiley Evers International Airport27 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 Jackson fogs in

Fog here concentrates in December and January — about 27 hours in a typical year at KJAN, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KJAN station page.

Fog season

January: ~5 hJanFebruary: ~2 hFebMarch: ~2 hMarApril: ~2 hAprMay: ~1 hMayJune: ~1 hJunJuly: ~1 hJulAugust: ~1 hAugSeptember: ~0 hSepOctober: ~1 hOctNovember: ~4 hNovDecember: ~7 hDec
Fog season runs November through April, peaking in December; fog is mostly a midnight–7 AM phenomenon; typically thinning out by 9 AM; 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.