Fog in Greensboro, NC

daily fog outlook & 2016–2026 climatology
Fog unlikely through Sunday (peak 13%). dense fog (visibility under a mile) is rare here in August.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Piedmont Triad International Airport (KGSO). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
KGSOPiedmont Triad International Airport53 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 Greensboro fogs in

Fog here concentrates in December and January — about 53 hours in a typical year at KGSO, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KGSO station page.

Fog season

January: ~11 hJanFebruary: ~8 hFebMarch: ~4 hMarApril: ~1 hAprMay: ~2 hMayJune: ~0 hJunJuly: ~1 hJulAugust: ~0 hAugSeptember: ~3 hSepOctober: ~5 hOctNovember: ~6 hNovDecember: ~11 hDec
Fog season runs September through March, peaking in January; fog is mostly a 2 AM–8 AM phenomenon; typically thinning out by 10 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.