Fog in Grantham, Lincolnshire

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 2 hours of dense fog here (10-year average).

Measured at RAF Barkston Heath (EGYE). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EGYERAF Barkston Heath227 h/yrclimatology

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 Grantham, Lincolnshire fogs in

Fog here concentrates in December and February — about 227 hours in a typical year at EGYE, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EGYE station page.

Fog season

January: ~27 hJanFebruary: ~26 hFebMarch: ~25 hMarApril: ~7 hAprMay: ~16 hMayJune: ~4 hJunJuly: ~2 hJulAugust: ~2 hAugSeptember: ~24 hSepOctober: ~27 hOctNovember: ~20 hNovDecember: ~50 hDec
Fog season is January, February, March, May, September, October, November, December, peaking in December; fog is mostly a midnight–9 AM phenomenon; typically thinning out by noon; 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.