Fog in Bemidji, MN

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 5 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Bemidji Regional Airport (KBJI). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KBJIBemidji Regional Airport53 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 Bemidji fogs in

Fog here concentrates in September and December — about 53 hours in a typical year at KBJI, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KBJI station page.

Fog season

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