Fog in Caribou, ME

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

Measuring station

stationairportfog hours/yrforecast
KCARCaribou Municipal Airport73 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 Caribou fogs in

Fog here concentrates in February and March — about 73 hours in a typical year at KCAR, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KCAR station page.

Fog season

January: ~7 hJanFebruary: ~9 hFebMarch: ~10 hMarApril: ~4 hAprMay: ~2 hMayJune: ~1 hJunJuly: ~5 hJulAugust: ~6 hAugSeptember: ~9 hSepOctober: ~7 hOctNovember: ~6 hNovDecember: ~7 hDec
Fog season runs July through April, peaking in March; fog is mostly a 3 AM–8 AM phenomenon; typically thinning out by 4 PM; 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.