Fog in Huron, SD

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 4 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

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

Measuring station

stationairportfog hours/yrforecast
KHONHuron Regional Airport44 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 Huron fogs in

Fog here concentrates in December and February — about 44 hours in a typical year at KHON, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KHON station page.

Fog season

January: ~5 hJanFebruary: ~6 hFebMarch: ~4 hMarApril: ~5 hAprMay: ~2 hMayJune: ~0 hJunJuly: ~2 hJulAugust: ~4 hAugSeptember: ~4 hSepOctober: ~1 hOctNovember: ~3 hNovDecember: ~7 hDec
Fog season is January, February, March, April, May, July, August, September, November, December, 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.