Fog in Wilmington, OH

daily fog outlook & 2016–2026 climatology
Fog unlikely through Monday (peak 8%). August typically brings about 7 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Wilmington Airpark (KILN). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
KILNWilmington Airpark58 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 Wilmington fogs in

Fog here concentrates in August and January — about 58 hours in a typical year at KILN, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KILN station page.

Fog season

January: ~7 hJanFebruary: ~6 hFebMarch: ~4 hMarApril: ~2 hAprMay: ~4 hMayJune: ~2 hJunJuly: ~5 hJulAugust: ~7 hAugSeptember: ~6 hSepOctober: ~5 hOctNovember: ~6 hNovDecember: ~6 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.