Iris Meadow Campground
Campground · Mammoth Lakes corridor
Iris Meadow Campground sits at 8445 feet in the Mammoth Lakes corridor, a high-Sierra staging ground with moderate wind exposure and reliable spring-to-fall access.
Wind averages 10 mph but surges to 33 mph in afternoon thermals, particularly April through June. Morning calm windows close by mid-day. Elevation and exposure mean temperatures lag valley floors by 10 to 15 degrees Fahrenheit.
The 30-day rolling average of 15.0 NoGo Score reflects typical spring volatility at this elevation; winds have peaked at 33 mph and minimum temperatures have dipped to 13 degrees Fahrenheit over the year. The week ahead will show whether the pattern stabilizes as summer approaches or persists in the shoulder season.
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About Iris Meadow Campground
Iris Meadow Campground occupies a moderate-elevation site at 8445 feet in the Mammoth Lakes corridor of California's Sierra Nevada. Primary access is via Highway 395 from the south (Lone Pine direction) or north (Susanville); the campground sits inland from the high lakes zone, making it a launch point for hiking and fishing rather than a water-dependent site. The Mammoth Lakes area is 30 to 45 minutes away by vehicle. Spring snowmelt and summer afternoon wind are the defining seasonal constraints.
Conditions here track the classic high-Sierra spring pattern: cool nights (minimum 13 degrees Fahrenheit recorded) and moderate days (30-degree average in the rolling 30-day window). Wind averages 10 mph but routinely gusts to 33 mph by afternoon. Crowding remains low (8.0 average) compared to highway-accessible lakes, so capacity is rarely the limiting factor. Late May through September offers the most stable weather; April and early May still see frost and occasional snow at adjacent passes. October arrives with variable conditions and shorter daylight.
Iris Meadow Campground works best for visitors seeking high-Sierra camping without the crowds of lakeside resorts. Backpackers and car campers planning day hikes or early-morning fishing trips find it ideal; windsports or afternoon recreation require patience and strong reading of the hourly forecast. Parking is available but not abundant during peak weekends. Arrive early if visiting Friday through Sunday in summer. Water is typically reliable from late spring through early fall; confirm current site status before booking. The 8445-foot elevation means that typical valley-floor clothing plans are inadequate; pack layers and a windproof layer regardless of forecast.
Nearby Mammoth Lakes town offers resupply, lodging, and dining if the campground is full or weather forces a pivot. Convict Lake, 15 minutes south, offers similar elevation and slightly more wind protection from its basin setting. June Lake Loop (Highway 158) provides an alternative corridor with comparable conditions. The Mammoth corridor sits east of the Sierra crest; afternoon heating generates consistent thermals that funnel through passes and valleys, so timing morning activities is critical for comfort and safety.