USA 250 Shirt →
Cf
Login
California

Mariposa County

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...The Heat Advisory has been replaced with an Extreme Heat Warning. High temperatures of 105 to 110 degrees and multiple days of Major Heat Risk. Hottest temperatures expected today. * WHERE...San Joaquin Valley and adjacent foothills, Lake Isabella, and the Kern River Valley. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Afternoon high temperatures of 105 to 110 degrees will occur until Monday, with the hottest temperatures expected today. Overnight lows will generally only fall into the mid 60s to mid 70s with little overnight relief.

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.

Overview

Mariposa County encompasses the western gateway communities to Yosemite National Park and is celebrating its 175th anniversary in 2025. The county is fully accessible for camping and recreation with all roads currently open as of October 2025 (Highway 140 reopened in late March after a rockslide closure). Key updates for experienced campers: Tuolumne Meadows Campground has completed its 3-year, $20 million renovation and reopened in 2025—marking the first time since 2019 that ALL Yosemite campgrounds are operational simultaneously. Highway 140, known as the "All-Weather Highway," is the primary access route through the Merced River Canyon and typically remains snow-free year-round at lower elevations. The county offers diverse camping from BLM sites along the Merced River (like McCabe Flat, 14-day max stay) to developed campgrounds like Cherry Valley and Summerdale in Sierra National Forest. Note that while Yosemite's higher elevation roads (Tioga Pass/Highway 120 East and Glacier Point Road) close seasonally for winter, Highway 140 through Mariposa County provides reliable year-round park access. Glamping expansion at Wildhaven Yosemite continues through 2026. YARTS public transit celebrates 25 years serving the Highway 140 corridor. Standard 14-day camping limits apply at most USFS and BLM sites in the county.

Campgrounds

Bridalveil Creek Campground Camp 4 Crane Flat Campground Dirt Flat Dry Gulch Jerseydale Campground Lower Pines Campground Moore Creek North Pines Campground Porcupine Flat Campground Summerdale Campground Tamarack Flat Campground Upper Pines Campground Wawona Campground Wawona Horse Campsites Yosemite Creek Campground

Community Posts

No posts yet. Be the first to share your experience!