May · WA

North Cascades National Park in May.

By Nicholas Major · Last updated

North Cascades National Park in May can work for a flexible lower-elevation trip, but it is early for alpine hiking. Newhalem's normal high is 67°F (19°C); higher roads and trails can stay snow-covered into early July. Check the highway before planning a crossing and choose walks from current route reports.

NOAA's Newhalem station represents a low-elevation western gateway. These normals do not describe alpine trails, Stehekin or the east side. Zero station snowfall does not establish snow-free mountain routes.

In short

May averages 1,030 national-park recreation visits. Ross Lake and Lake Chelan recreation areas are separate reporting units, so this is not a count of the whole complex or Highway 20 traffic.

Check before you go

Use this pageShare or cite this guide
Add as a preferred source on Google

National Sites Guide

Share this page

Cite this page

Copy a citation

Leave room for the spring reopening

NPS says Highway 20 normally reopens in April or early May. That pattern does not guarantee a crossing on your chosen date, and higher roads and trails can remain snowy until early July.

Confirm the road and your intended walk before arranging a route that depends on them. Newhalem averages 3.01 inches of precipitation and a low of 46°F (8°C). Pack for rain and wind; those lowland normals do not describe an alpine trail.

Try a short viewpoint walk when access and visibility allow

The Sterling Munro Boardwalk runs 330 feet (100 m) one way from outside the northwest corner of the North Cascades Visitor Center. NPS describes a view of the Picket Range up the Goodell Creek drainage. It offers a short walk near Newhalem without committing to a mountain hike.

Check the approach and route first; the viewpoint does not guarantee clear skies. Confirm visitor-center hours separately if you need its services, and bring what you need for the outing.

Questions about May

Is May a good time to visit North Cascades National Park?

May can work for a flexible lower-elevation visit. It is early for alpine hiking, and the highway's normal April or early-May reopening is not a guaranteed date. Check your road and trail before committing to a plan.

Can you hike in North Cascades in May?

Choose a route from its actual conditions. A short option such as Sterling Munro Boardwalk may suit a lower-elevation visit when access allows; higher roads and trails can remain snow-covered until early July. Valley warmth is not proof of a usable mountain trail.

Sources and limits

NOAA 1991-2020 climate normals: NEWHALEM, WA US (USC00455840), 525 feet. Normal high: 66.5°F (19.2°C); normal low: 45.7°F (7.6°C). These are long-term averages, not a forecast.

NPS Visitor Use Statistics Data Package, 2025: 2021–2025 average recreation visits for North Cascades National Park (NOCA). The May 2025 count is 1,186. Counts measure visits, not unique people or a day's parking pressure.

Compare your dates

Independence

Independent site. Not affiliated with or endorsed by the National Park Service. Data comes from the official NPS Visitor Use Statistics Data Package, 2025; editorial analysis is ours. The NPS Arrowhead and other NPS marks are not used.

Last updated · 2026-10-15