Porcupine Flat Campground
Campground · 8,097 ft · Yosemite corridor
Porcupine Flat Campground sits at 8,097 feet in the high Sierra along the Yosemite corridor. A high-elevation plateau location exposed to afternoon wind and early-season snow.
Afternoon wind accelerates across the open terrain; mornings are calm. Temperature swings are sharp between sun and shade. Snow lingers into spring; by late summer, exposed sites dry fast. Wind gusts peak most days by 2 PM.
The rolling 30-day average wind here is 7 mph, with gusts reaching 22 mph on harder days. Temperature hovers near 35°F on average. The coming week brings typical spring variability: watch the trend chart for wind spikes, which often align with afternoon heating and cold-front passages. Crowding is light at 12 people per window on average.
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About Porcupine Flat Campground
Porcupine Flat Campground occupies a high-Sierra plateau at 8,097 feet on the eastern flank of the Yosemite corridor, roughly 30 miles northeast of Yosemite Valley via Highway 120. Access is via Highway 120 (Tioga Pass Road), the primary trans-Sierra corridor that connects the Central Valley to Nevada. The campground sits on open, windswept terrain with minimal tree shelter. Seasonal closure is common; Highway 120 typically opens in late April or early May after winter snowpack clears, which directly controls when the site becomes accessible. Drive times from the Valley are 45 minutes to an hour depending on weather and road condition.
Spring at Porcupine Flat means unpredictable snow and freezing nights. The rolling 30-day average temperature is 35°F; nighttime lows are often well below freezing. Maximum wind reaches 22 mph in the rolling 365-day window, and afternoon gusts are routine. By early summer, the site becomes warmer and more stable. Late summer and early fall offer the most reliable stable weather, with lower crowding. Winter brings deep snow and closure; the site typically does not reopen until snow removal on Highway 120 is complete. The 30-day average crowding score of 12 reflects the isolation and seasonal accessibility; weekends after reopening see modest upticks, but this location never fills like lower-elevation Valley sites.
Porcupine Flat suits visitors who can handle exposure, cold nights, and wind. Tent campers should expect afternoon wind to test stake strength and rain fly tension. RV campers benefit from the open layout but must secure loose gear. Experienced Sierra travelers plan around the short season, pack layers, and arrive early in the day to secure water and level ground before wind peaks. The campground works well for travelers transiting Highway 120 or as a staging point for high-country backpack trips. Smoke in late summer can reduce air quality; winter approach requires avalanche awareness given the high elevation and proximity to avalanche-prone terrain in the nearby high country.
Nearby Tuolumne Meadows Campground, 20 miles southeast via Highway 120, is larger and often more sheltered. Both sites sit on the high-Sierra corridor and share similar seasonal patterns, but Tuolumne Meadows opens and closes on the same schedule and sees higher crowding. Lower-elevation alternatives on the Yosemite corridor include Crane Flat and Hodgdon Meadow on the western side of the park, which open earlier and close later. Porcupine Flat's appeal lies in its isolation, lower crowding, and position as a genuine high-elevation experience rather than a convenience stop.