Fog in Cleveland, OH

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. 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 Cleveland Hopkins International Airport (KCLE). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring stations

stationairportfog hours/yrforecast
KCLECleveland Hopkins International Airport26 h/yrverifying
KCGFCuyahoga County Airport32 h/yrverifying
KBKLBurke Lakefront Airport29 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 Cleveland fogs in

Fog here concentrates in March and December — about 26 hours in a typical year at KCLE, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KCLE station page.

Fog season

January: ~3 hJanFebruary: ~4 hFebMarch: ~5 hMarApril: ~0 hAprMay: ~3 hMayJune: ~2 hJunJuly: ~1 hJulAugust: ~0 hAugSeptember: ~2 hSepOctober: ~1 hOctNovember: ~1 hNovDecember: ~4 hDec
Fog season is January, February, March, May, June, September, December, peaking in March; fog is mostly a 5 AM–9 AM phenomenon; typically thinning out by 11 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.