Fog in Coeur d'Alene, ID

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. dense fog (visibility under a mile) is rare here in August.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Coeur D'Alene Airport - Pappy Boyington Field (KCOE). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KCOECoeur D'Alene Airport - Pappy Boyington Field90 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 Coeur d'Alene fogs in

Fog here concentrates in January and November — about 90 hours in a typical year at KCOE, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KCOE station page.

Fog season

January: ~29 hJanFebruary: ~14 hFebMarch: ~6 hMarApril: ~1 hAprMay: ~1 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~0 hAugSeptember: ~2 hSepOctober: ~5 hOctNovember: ~16 hNovDecember: ~13 hDec
Fog season runs November through February, peaking in January; fog is mostly a 11 PM–8 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 2 hours once it forms local time · 10-yr average

Machine access: data.json · llms.txt · forecast verification. Not for operational use.