Fog in Paso Robles, CA

daily fog outlook & 2016–2026 climatology
Fog possible — NWS guidance shows a fog signal in the next 48 hours. August typically brings about 2 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Paso Robles Municipal Airport (KPRB). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KPRBPaso Robles Municipal Airport89 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 Paso Robles fogs in

Fog here concentrates in December and January — about 89 hours in a typical year at KPRB, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KPRB station page.

Fog season

January: ~22 hJanFebruary: ~10 hFebMarch: ~7 hMarApril: ~4 hAprMay: ~2 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~2 hAugSeptember: ~2 hSepOctober: ~8 hOctNovember: ~9 hNovDecember: ~24 hDec
Fog season runs October through March, peaking in December; fog is mostly a 6 AM–8 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 2 hours once it forms local time · 10-yr average

Machine access: data.json · llms.txt · forecast verification. Not for operational use.