FogCast · Cape Flattery, WA
Fog Forecast for Cape Flattery
Know before you drive: FogCast checks the conditions that produce photogenic fog
Reading current conditions…
🔒 App Exclusive
The full FogCast forecast is in the app.
Get more than a snapshot of current conditions. The LightCast app unlocks everything to plan ahead
- 📈 Full FogCast score (0–100)
- 📅 7-day fog outlook
- 🌅 Best photography windows
- 🔔 Push alerts when conditions improve
- ⭐ Save favorite locations
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7-day free trial · $2.99/mo
Why fog is hard to predict
Humidity alone isn't enough. Wind alone isn't enough. Cloud cover alone isn't enough. Photogenic valley fog requires several conditions to line up at once, and most weather apps don't read them together.
Dew Point Depression
When air temperature and dew point converge below 2°C, the air is near saturation. This is the single strongest fog predictor and the first thing FogCast checks.
Wind Speed
Fog needs calm air. Below 5 km/h is ideal. Above 15 km/h, fog disperses before it can pool in the valley. A standard weather app won't flag this combination.
Overnight Sky Clarity
Clear overnight skies let the ground cool rapidly, pushing surface temperatures toward the dew point. Counterintuitively, clouds overnight suppress radiation fog.
Temperature Trend
FogCast reads the overnight temperature arc. If temps are converging toward the dew point hour by hour, fog probability increases significantly by pre-dawn.
Check today's FogCast
What the app shows you
Full FogCast score, fog type, chase-or-skip verdict, and 10-day outlook — all in the app.
Get LightCast Suite on iOS
Get notified instead of checking every morning
Set a FogCast threshold once. The app will alert you when conditions at your saved locations look promising, so you're not manually checking at 4am.
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Wake up only when conditions look promising
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Avoid wasted drives when fog never forms
⭐
Save your favorite photography locations
🌫️
Never miss a rare dense fog event
Fog photography at Cape Flattery
Cape Flattery is the northwesternmost point of the contiguous United States, a dramatic headland of sea stacks, arches, and surge channels on the Makah Nation reservation at the tip of the Olympic Peninsula. The cape faces directly into the open Pacific and the Juan de Fuca Strait, two of the foggiest marine corridors on the North American coast. Marine fog here is dense, frequent, and elemental — the cape was named by Captain Cook for its "flattering" promise of a harbor that the fog quickly obscured.
The Makah tribal boardwalk trail leads to four viewing platforms above the cape's sea stacks and arches, with Tatoosh Island and its lighthouse visible offshore in clear conditions and completely swallowed by fog in thick marine layer. The sea arch viewpoints are most dramatic when fog sits at or just above the cliff level, with the ocean surge sounds amplified by zero visibility. The offshore sea stacks emerging from fog are extraordinary compositions. May through September is peak marine fog season; the cape sees fog far more often than clear conditions during summer.
Cape Flattery fog is classic Pacific maritime advection fog — cold water, moist air, and the persistent Pacific high pushing marine layer onto the cape from the northwest. When northwest winds are 10–20 km/h and the marine layer depth exceeds 200 meters, fog at the cape is essentially certain. Stronger winds shred the fog into fast-moving streamers between the sea stacks, which is also spectacular but very different from the still, deep fog of calm mornings.
Other fog photography locations
Frequently asked
Can I check FogCast on the website?
This page shows a preview of current conditions, including humidity, wind, temperature, and dew point. The full FogCast score, 7-day outlook, push notifications, and best shooting windows are available exclusively in the LightCast app for iOS.
Is FogCast free?
The current conditions preview on this page is free, no account needed. The full FogCast tool is in the LightCast Suite iOS app, which includes a 7-day free trial. After the trial it's $2.99/month, cancel anytime in the App Store.
Why use FogCast instead of checking humidity?
Humidity alone doesn't tell you whether photogenic fog is likely. High humidity with strong wind produces no fog at all. FogCast combines dew point depression, wind speed, overnight sky clarity, temperature trend, and visibility into a single score built specifically for fog photography planning.
What is FogCast's scoring scale?
FogCast scores fog conditions from 0 to 100. A score of 75 or above indicates dense fog is expected. 55 to 74 means fog is likely and worth chasing. 35 to 54 suggests patchy mist is possible. Below 35, conditions are unlikely to produce photogenic fog. The full score is available in the LightCast app.
