Fog in San Fernando

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 9 hours of dense fog here (10-year average).

Measured at San Fernando Airport (SADF). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
SADFSan Fernando Airport80 h/yrclimatology

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 San Fernando fogs in

Fog here concentrates in June and July — about 80 hours in a typical year at SADF, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the SADF station page.

Fog season

January: ~1 hJanFebruary: ~2 hFebMarch: ~2 hMarApril: ~6 hAprMay: ~11 hMayJune: ~24 hJunJuly: ~16 hJulAugust: ~9 hAugSeptember: ~3 hSepOctober: ~2 hOctNovember: ~0 hNovDecember: ~1 hDec
Fog season runs April through August, peaking in June; fog is mostly a 2 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.