CYPR — Prince Rupert Airport

fog forecast & climatology · Prince Rupert city page · full 10-year analysis →
Some chance of fog — peaks at 22% around 7 am Saturday.forecast cycle 2026-09-04T13:00:00Z · page rebuilt daily · live layers below update hourly

Fog hours per year
101 h below CAT I minima (2016–2026 average)
Fog season
August and September
Typical fog event
~2 h once it forms (middle half 1–3 h, n=386)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year Prince Rupert Airport spends 101 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in August and September. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~4 hJanFebruary: ~1 hFebMarch: ~3 hMarApril: ~4 hAprMay: ~7 hMayJune: ~10 hJunJuly: ~14 hJulAugust: ~26 hAugSeptember: ~17 hSepOctober: ~11 hOctNovember: ~5 hNovDecember: ~0 hDec
Fog season runs May through October, peaking in August; fog is mostly a 3 AM–9 AM phenomenon; typically thinning out by 11 AM; a typical event lasts about 2 hours once it forms local time · 10-yr average

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.