Fog in Sandy Lake, ON

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

Measuring station

stationairportfog hours/yrforecast
CZSJSandy Lake 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 Sandy Lake fogs in

Fog here concentrates in August and October — about 29 hours in a typical year at CZSJ, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the CZSJ station page.

Fog season

January: ~0 hJanFebruary: ~0 hFebMarch: ~1 hMarApril: ~2 hAprMay: ~1 hMayJune: ~2 hJunJuly: ~3 hJulAugust: ~7 hAugSeptember: ~3 hSepOctober: ~6 hOctNovember: ~3 hNovDecember: ~1 hDec
Fog season is April, June, July, August, September, October, November, peaking in August; fog is mostly a 4 AM–8 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.