Mountain Peak

Mount Persis peak

Cascade Range, Washington 5,464 ft
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Range
Cascade Range
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Mount Persis rises to 5,464 ft in Pacific-Ranges within the Cascade Range range.

Standing at an elevation of 5,398 feet (1,645 meters), it offers a challenging and rewarding mountaineering experience. The mountain is relatively small in size compared to many other peaks in the region, making it an ideal destination for beginner and intermediate climbers.

During the winter season, Mount Persis receives a significant snowpack that ranges from 10 to 20 feet (3 to 6 meters) on average. This makes it a popular spot for backcountry skiing and snowshoeing. The snowpack typically lasts from late November to early May, providing ample opportunities for winter sports enthusiasts.

Several creeks and rivers receive runoff from Mount Persis, including the South Fork Skykomish River and Heybrook Creek. These water sources are essential for the surrounding ecosystem and provide beautiful natural scenery for hikers and climbers.

As for its name and history, Mount Persis was named by Albert H. Sylvester, a prominent surveyor and geologist in the late 19th century. The origin of the name itself remains unclear, but it is believed to be derived from ancient Persian or Greek mythology. The mountain holds no specific legends or lore, but its stunning beauty and challenging routes continue to attract mountaineers and outdoor enthusiasts seeking adventure in the Pacific Ranges.

For trail conditions and access, search Wikipedia or the local land manager's site. Browse other peaks in the Pacific-Ranges range.

StateWASHINGTON
RangeCascade Range
Elevation5,464 ft
Latitude47.7904°
Longitude-121.6120°
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Regional snowpack

Snowpack near Mount Persis

Snow water equivalent and snowpack depth at SNOTEL stations near the peak. Best proxy for what's currently sitting on the summit.

Regional streamflow

Streamflow near Mount Persis

USGS streamgauges in the basin drained by this peak. Spring snowmelt from the summit feeds these flows.

Detailed forecast

Plan around incoming weather

Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column -- snow at this elevation typically lags the radar signature by a few hours.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day forecast

Daily temperatures, snow, and rain projected over the next two weeks.

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Get Mount Persis on your phone.

Save this peak as a favorite and get push alerts when storms move in, fresh snow falls upstream, or NWS issues a weather warning. Free, account optional.

Snoflo app icon
QR code -- scan with your iPhone to install Snoflo

Scan to install Look for this on your home screen

Snoflo Premium

Favorites and custom weather alerts are part of Snoflo Premium. Save peaks, set snowfall or wind thresholds, and get push alerts when conditions cross.

Set up an alert

Custom alerts are configured in the Snoflo iOS app. Open the app, navigate to this peak, and tap the bell icon to set thresholds for snowfall, temperature, or wind.

{# FAVORITE-LIMIT MODAL — fires when a non-premium user hits the 3-favorite cap. Mirrors the iOS PremiumGateSheet's .bookmarkLimit case: same copy direction (limit reached → unlimited with Premium), same primary CTA shape. Triggered from toggle_fave (pre-flight) and the 403 error handler. #} {# ALERTS-IN-APP MODAL — opened from the Account dropdown's "Alerts" link. Push-notification alerts (snow / flow / buoy / ski) are managed in the iOS app because they require APNs + device tokens; the webapp has no equivalent surface, so the right thing to do is point users at the App Store. Mirrors the per-gauge #sf-cp-alerts-modal popup on recChildFlow.html. #}