Fog in Deer Lake, NL

daily fog outlook & 2016–2026 climatology
Forecast feed initializing for this station. August typically brings about 4 hours of dense fog here (10-year average).

Measured at Deer Lake Airport (CYDF). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
CYDFDeer Lake Airport22 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 Deer Lake fogs in

Fog here concentrates in October and August — about 22 hours in a typical year at CYDF, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the CYDF station page.

Fog season

January: ~1 hJanFebruary: ~2 hFebMarch: ~1 hMarApril: ~1 hAprMay: ~0 hMayJune: ~1 hJunJuly: ~1 hJulAugust: ~4 hAugSeptember: ~3 hSepOctober: ~6 hOctNovember: ~1 hNovDecember: ~1 hDec
Fog season is February, August, September, October, peaking in October; fog is mostly a 6 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.