Fog in Sioux Lookout, ON

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 1 hour of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Sioux Lookout Airport (CYXL). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
CYXLSioux Lookout Airport26 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 Sioux Lookout fogs in

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

Fog season

January: ~3 hJanFebruary: ~1 hFebMarch: ~1 hMarApril: ~5 hAprMay: ~2 hMayJune: ~0 hJunJuly: ~1 hJulAugust: ~1 hAugSeptember: ~5 hSepOctober: ~2 hOctNovember: ~1 hNovDecember: ~3 hDec
Fog season is January, April, May, September, October, December, peaking in April; fog is mostly a 5 AM–9 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.