Fog in Bluefield, WV

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 5 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Mercer County Airport (KBLF). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KBLFMercer County Airport63 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 Bluefield fogs in

Fog here concentrates in January and February — about 63 hours in a typical year at KBLF, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KBLF station page.

Fog season

January: ~8 hJanFebruary: ~6 hFebMarch: ~6 hMarApril: ~2 hAprMay: ~4 hMayJune: ~4 hJunJuly: ~4 hJulAugust: ~5 hAugSeptember: ~6 hSepOctober: ~6 hOctNovember: ~6 hNovDecember: ~6 hDec
Fog season is year-round, peaking in January; fog is mostly a 6 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.