Fog in Cape Girardeau, MO

daily fog outlook & 2016–2026 climatology
Fog unlikely through Monday (peak 9%). August typically brings about 10 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Cape Girardeau Regional Airport (KCGI). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
KCGICape Girardeau Regional Airport76 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 Cape Girardeau fogs in

Fog here concentrates in September and October — about 76 hours in a typical year at KCGI, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KCGI station page.

Fog season

January: ~7 hJanFebruary: ~6 hFebMarch: ~1 hMarApril: ~4 hAprMay: ~3 hMayJune: ~4 hJunJuly: ~5 hJulAugust: ~10 hAugSeptember: ~12 hSepOctober: ~10 hOctNovember: ~7 hNovDecember: ~8 hDec
Fog season runs April through February, peaking in September; fog is mostly a 3 AM–6 AM phenomenon; typically thinning out by 8 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.