Fog in Brainerd, MN

daily fog outlook & 2016–2026 climatology
Some chance of fog — peaks at 28% around 4 am Monday.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Brainerd Lakes Regional Airport (KBRD). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
KBRDBrainerd Lakes Regional Airport75 h/yrlive forecast

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 Brainerd fogs in

Fog here concentrates in December and September — about 75 hours in a typical year at KBRD, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KBRD station page.

Fog season

January: ~8 hJanFebruary: ~5 hFebMarch: ~5 hMarApril: ~4 hAprMay: ~4 hMayJune: ~3 hJunJuly: ~3 hJulAugust: ~9 hAugSeptember: ~9 hSepOctober: ~6 hOctNovember: ~6 hNovDecember: ~11 hDec
Fog season is year-round, peaking in December; fog is mostly a 3 AM–7 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.