Fog in Raleigh/Durham, NC

daily fog outlook & 2016–2026 climatology
Fog unlikely through Sunday (peak 8%). 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 Raleigh-Durham International Airport (KRDU). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
KRDURaleigh-Durham International Airport64 h/yrlive forecast

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 Raleigh/Durham fogs in

Fog here concentrates in February and January — about 64 hours in a typical year at KRDU, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KRDU station page.

Fog season

January: ~12 hJanFebruary: ~13 hFebMarch: ~4 hMarApril: ~2 hAprMay: ~3 hMayJune: ~1 hJunJuly: ~2 hJulAugust: ~3 hAugSeptember: ~6 hSepOctober: ~5 hOctNovember: ~3 hNovDecember: ~10 hDec
Fog season is January, February, March, September, October, December, peaking in February; fog is mostly a 2 AM–9 AM phenomenon; typically thinning out by 11 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.