KMTC — Selfridge Air National Guard Base Airport

fog forecast & climatology · Mount Clemens city page · full 10-year analysis →
Fog unlikely through Saturday (peak 5%). September typically brings about 2 hours of dense fog here.forecast cycle 2026-09-04T13:00:00Z · page rebuilt daily · live layers below update hourly

Fog hours per year
52 h below CAT I minima (2016–2026 average)
Fog season
January and February
Typical fog event
~2 h once it forms (middle half 1–3 h, n=210)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year Selfridge Air National Guard Base Airport spends 52 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in January and February. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~12 hJanFebruary: ~9 hFebMarch: ~7 hMarApril: ~2 hAprMay: ~1 hMayJune: ~2 hJunJuly: ~2 hJulAugust: ~1 hAugSeptember: ~2 hSepOctober: ~3 hOctNovember: ~4 hNovDecember: ~6 hDec
Fog season runs October through March, peaking in January; fog is mostly a 6 AM–10 AM phenomenon; a typical event lasts about 2 hours once it forms local time · 10-yr average

Runway infrastructure

endapproach lightsbest approachlengthRVR
01SALS—10,010 ftRVR
19ALSF-1CAT I10,010 ftRVR

From FAA NASR / curated AIP Canada research. Approach-light class and minima tier drive how low an approach can be flown — details in the chase board.

For flight operations

EFVS crews: the CHASE board ranks airports by live fog status, approach lighting, go-around height and flight time from your base. Forecast probabilities publish here per-airport once the calibrated model beats climatology on live verification — receipts on the scorecard. Methodology.

Sources: NOAA/NWS National Blend of Models guidance · METAR observations 2016–2026 (Iowa Environmental Mesonet) · FAA NASR. Machine access: data.json · llms.txt. Not for operational use.