Fog in Ely, MN

daily fog outlook & 2016–2026 climatology
Fog unlikely through Sunday (peak 5%). 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 Ely Municipal Airport (KELO). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
KELOEly Municipal Airport63 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 Ely fogs in

Fog here concentrates in September and October — about 63 hours in a typical year at KELO, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KELO station page.

Fog season

January: ~6 hJanFebruary: ~2 hFebMarch: ~3 hMarApril: ~5 hAprMay: ~3 hMayJune: ~4 hJunJuly: ~6 hJulAugust: ~7 hAugSeptember: ~14 hSepOctober: ~9 hOctNovember: ~2 hNovDecember: ~4 hDec
Fog season is January, April, June, July, August, September, October, December, peaking in September; fog is mostly a 2 AM–7 AM phenomenon; typically thinning out by 10 AM; 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.