Fog in Detroit, MI

daily fog outlook & 2016–2026 climatology
Fog unlikely through Sunday (peak 18%). August typically brings about 2 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Willow Run Airport (KYIP). Forecast percentages for this station have passed live verification.

Measuring stations

stationairportfog hours/yrforecast
KYIPWillow Run Airport55 h/yrlive forecast
KDTWDetroit Metropolitan Wayne County Airport48 h/yrverifying
KDETColeman A. Young Municipal Airport27 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 Detroit fogs in

Fog here concentrates in January and February — about 55 hours in a typical year at KYIP, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KYIP station page.

Fog season

January: ~13 hJanFebruary: ~8 hFebMarch: ~3 hMarApril: ~2 hAprMay: ~2 hMayJune: ~1 hJunJuly: ~1 hJulAugust: ~2 hAugSeptember: ~6 hSepOctober: ~6 hOctNovember: ~5 hNovDecember: ~8 hDec
Fog season runs September through February, peaking in January; fog is mostly a 1 AM–9 AM phenomenon; typically thinning out by 1 PM; 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.