Fog in Hattiesburg, MS

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 Hattiesburg Bobby L Chain Municipal Airport (KHBG). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KHBGHattiesburg Bobby L Chain Municipal Airport77 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 Hattiesburg fogs in

Fog here concentrates in December and November — about 77 hours in a typical year at KHBG, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KHBG station page.

Fog season

January: ~6 hJanFebruary: ~7 hFebMarch: ~5 hMarApril: ~6 hAprMay: ~5 hMayJune: ~2 hJunJuly: ~2 hJulAugust: ~3 hAugSeptember: ~3 hSepOctober: ~8 hOctNovember: ~13 hNovDecember: ~17 hDec
Fog season runs October through May, peaking in December; fog is mostly a 4 AM–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.