Fog in White Plains, NY

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 3 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at Westchester County Airport (KHPN). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KHPNWestchester County Airport153 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 White Plains fogs in

Fog here concentrates in May and March — about 153 hours in a typical year at KHPN, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KHPN station page.

Fog season

January: ~18 hJanFebruary: ~16 hFebMarch: ~20 hMarApril: ~14 hAprMay: ~23 hMayJune: ~14 hJunJuly: ~4 hJulAugust: ~3 hAugSeptember: ~4 hSepOctober: ~12 hOctNovember: ~3 hNovDecember: ~20 hDec
Fog season is January, February, March, April, May, June, October, December, peaking in May; fog is mostly a 1 AM–9 AM phenomenon; typically thinning out by 1 PM; 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.