Fog in Fort Chipewyan, AB

daily fog outlook & 2016–2026 climatology
Fog unlikely through Sunday (peak 5%). August typically brings about 6 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Fort Chipewyan Airport (CYPY). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
CYPYFort Chipewyan Airport39 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 Fort Chipewyan fogs in

Fog here concentrates in September and October — about 39 hours in a typical year at CYPY, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the CYPY station page.

Fog season

January: ~4 hJanFebruary: ~1 hFebMarch: ~1 hMarApril: ~1 hAprMay: ~3 hMayJune: ~1 hJunJuly: ~3 hJulAugust: ~6 hAugSeptember: ~10 hSepOctober: ~6 hOctNovember: ~1 hNovDecember: ~2 hDec
Fog season is January, May, July, August, September, October, peaking in September; fog is mostly a 5 AM–8 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.