Fog in Danville, VA

daily fog outlook & 2016–2026 climatology
Fog unlikely through Sunday (peak 7%). 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 Danville Regional Airport (KDAN). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
KDANDanville Regional Airport43 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 Danville fogs in

Fog here concentrates in January and December — about 43 hours in a typical year at KDAN, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KDAN station page.

Fog season

January: ~5 hJanFebruary: ~4 hFebMarch: ~4 hMarApril: ~3 hAprMay: ~3 hMayJune: ~2 hJunJuly: ~3 hJulAugust: ~3 hAugSeptember: ~4 hSepOctober: ~4 hOctNovember: ~3 hNovDecember: ~5 hDec
Fog season is year-round, peaking in January; fog is mostly a 3 AM–8 AM phenomenon; typically thinning out by 10 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.