Fog in Jacksonville, FL
daily fog outlook & 2016–2026 climatology
Fog unlikely through Monday (peak 6%). 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 Cecil Airport (KVQQ). Forecast percentages for this station have passed live verification.
Measuring stations
| station | airport | fog hours/yr | forecast |
|---|---|---|---|
| KVQQ | Cecil Airport | 138 h/yr | live forecast |
| KNRB | Naval Station Mayport / Admiral David L McDonald Field | 34 h/yr | live forecast |
| KJAX | Jacksonville International Airport | 57 h/yr | verifying |
| KCRG | Jacksonville Executive at Craig Airport | 45 h/yr | verifying |
| KNIP | Jacksonville Naval Air Station (Towers Field) | 37 h/yr | verifying |
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 Jacksonville fogs in
Fog here concentrates in December and November — about 138 hours in a typical year at KVQQ, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KVQQ station page.
Fog season
Fog season runs September through May, peaking in December; fog is mostly a midnight–5 AM phenomenon; typically thinning out by 8 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.