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Yosemite Wilderness

Extreme Heat Warning issued August 9 at 10:02AM PDT until August 10 at 8:00PM PDT by NWS Hanford CA

10:02 AM — 8:15 PM

* WHAT...High temperatures up to 110 degrees and Major Heat Risk today and Monday. * WHERE...Mariposa-Madera Lower Sierra. Includes Mariposa, North Fork, Oakhurst, Coarsegold, and El Portal. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Hot temperatures and limited overnight relief may cause heat illnesses. * ADDITIONAL DETAILS...Afternoon high temperatures of 102 to 110 degrees will occur until Monday, with the hottest temperatures expected today and mainly for elevations around 3,000 feet and lower. Overnight lows will generally only fall into the mid 60s to mid 70s with little overnight relief.

Heat Advisory issued August 9 at 12:24AM PDT until August 9 at 10:00PM PDT by NWS Sacramento CA

12:24 AM — 10:00 PM

* WHAT...High temperatures of 101 to 107 and low temperatures of 65 to 80 expected, with Moderate to Major HeatRisk. * WHERE...The Sacramento and San Joaquin Valleys, Foothills, Coast Range, and Sierra north of Highway 50. * WHEN...Until 10 PM PDT this evening. * IMPACTS...ot temperatures may cause heat illnesses, especially anyone without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Hot temperatures continue today, with areas of Major HeatRisk. Hottest temperatures and warmest overnight lows expected in the northern Sacramento Valley and Sierra foothills thermal belts.

Tamarack Flat Campground

From Recreation.gov

Season dates for this campground are tentative and subject to change depending on weather, road openings and other conditions. Updates will be posted here ahead of additional releases.

Overview

Yosemite Wilderness encompasses approximately 94% of Yosemite National Park's 750,000 acres and is congressionally designated wilderness—the highest level of protection for public lands. The wilderness is open and accessible year-round for overnight backcountry use, though winter access is significantly limited. Tioga Road (Highway 120 through the park) closed for winter on November 25, 2024, and typically remains closed until late May or early June, restricting access to the high country. Glacier Point Road is also closed for winter. Wilderness permits are required year-round for all overnight stays and operate on a quota system. From May through October, 60% of permits are available via lottery on Recreation.gov 24 weeks in advance, with remaining permits available walk-up. November through April permits are non-quota and available without reservation. Bear canisters are mandatory for all overnight trips (except Little Yosemite Valley and High Sierra Camps which have bear lockers). Winter wilderness camping requires self-sufficiency with proper snow and avalanche gear, as most high-elevation areas experience heavy snowpack. The Hetch Hetchy area remains accessible year-round and offers winter wilderness access. No vehicle entrance reservations are currently required for winter visits. Contact wilderness centers for conditions: Yosemite Valley year-round, though hours vary seasonally.

Campgrounds

Tamarack Flat Campground

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