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California › Mariposa County › Yosemite Wilderness

Yosemite National Park

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.

Stanislaus National Forest

National Forest System Roads

Follow California Vehicle Code on National Forest System Roads

Overview

Yosemite National Park is open year-round, 24 hours a day. Currently in winter conditions, the park remains fully accessible through three main entrances that stay open year-round: CA-41 from Oakhurst, CA-140 from Mariposa, and CA-120 West from Groveland. However, seasonal winter closures are in effect for high-elevation roads. Tioga Road (CA-120 East) and Glacier Point Road closed for the season in mid-November 2025 and typically remain closed until late May or early June, depending on snow conditions and plowing schedules. During winter, tire chains may be required on park roads during snowy or icy conditions, so come prepared. Four campgrounds remain open year-round: Upper Pines and Camp 4 in Yosemite Valley, Hodgdon Meadow north of the Valley, and Wawona south of the Valley. No entrance reservations are currently required during the winter season (reservations were only needed during peak summer periods from late May through early September 2025). The park encompasses nearly 1,200 square miles featuring iconic waterfalls, deep valleys, grand meadows, ancient giant sequoias, and vast wilderness areas. Winter visitors can experience unique beauty with potential snow-covered landscapes, though certain backcountry areas may be inaccessible until spring thaw. Always check current conditions before visiting, as weather can change rapidly in the Sierra Nevada.

Campgrounds

Bridalveil Creek Campground Camp 4 Crane Flat Campground Hodgdon Meadow Campground Lower Pines Campground North Pines Campground Porcupine Flat Campground Tamarack Flat Campground Tuolumne Meadows Campground Upper Pines Campground Wawona Campground Wawona Horse Campsites White Wolf Campground Yosemite Creek Campground

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