Fog in Klamath Falls, OR

daily fog outlook & 2016–2026 climatology
Fog unlikely through Sunday (peak 2%). August typically brings about 1 hour of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Crater Lake-Klamath Regional Airport (KLMT). Forecast percentages for this station have passed live verification.

Measuring station

stationairportfog hours/yrforecast
KLMTCrater Lake-Klamath Regional Airport92 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 Klamath Falls fogs in

Fog here concentrates in December and November — about 92 hours in a typical year at KLMT, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KLMT station page.

Fog season

January: ~16 hJanFebruary: ~11 hFebMarch: ~3 hMarApril: ~1 hAprMay: ~1 hMayJune: ~0 hJunJuly: ~1 hJulAugust: ~1 hAugSeptember: ~2 hSepOctober: ~8 hOctNovember: ~17 hNovDecember: ~35 hDec
Fog season runs November through February, peaking in December; fog is mostly a 3 AM–9 AM phenomenon; typically thinning out by 11 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.