You are currently viewing Update – Mammoth Mountain Weather & Discussion

Update – Mammoth Mountain Weather & Discussion

Monday June 22nd, 2026 @ 7 AM

Good Morning: Perfect Summer Weather continues in the high country, with some nice relief from the excessive heat of the last few days down in the Bishop area.

Over the next few days, a ridge of high pressure will be building along the US-Mexican border in Arizona. This ridge will intensify the next few days, leading to some warm to very warm temps mid-week.

The good news is the ridge will quickly weaken, and lower heights will move into the area as some weak troughing sets up off the California coast by Thursday.

The troughing then leads to the weekend pattern that turns into a summer inside slider, bringing temps in the eastern Sierra down into the just below average range.

Expect the usual summer afternoon zephyr winds this week, along with mostly clear skies with just an isolated buildup or two from Bishop Creek Canyon up towards Rock Creek Canyon.

Local Weather Forecasts

Main Lodge / Mammoth Lakes Basin, Today, Sunny, with a high near 72. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 25 mph.

Tuesday: Sunny, with a high near 75. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 35 mph.

Mammoth Lakes: Today, Sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon. Winds could gust as high as 20 mph.

Tuesday, Sunny, with a high near 82. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 30 mph.

Bishop: Today, Sunny, with a high near 98. Calm wind becoming south southeast 5 to 9 mph in the afternoon.

Tuesday, Sunny, with a high near 100. Calm wind becoming south southeast 5 to 9 mph in the afternoon.

For next week: Looking at the EPS model this morning, the Eastern Sierra will continue to be affected by troughing as the inside slider looks to retrograde its energy in time off the west coast of California. That pattern will bring about average temperatures to the area, perfect for hiking, mountain biking, scenic drives, camping, and whatever you’re doing.

4th of July Weekend Outlook: The eastern Sierra looks to be on the western fringes of a strong broad ridge of high pressure that sets up over Colorado, and not the 4 corners area.

This pattern will bring the lower 80s to Mammoth Lakes with upper 90s to low 100s in Bishop for the Holiday weekend. This pattern would be a dry one.

Confidence is low in any outcome past day 10 right now.

Snowman out….

Steve Taylor the Mammoth Snowman

Steve Taylor the Mammoth Snowman, has called Mammoth Lakes home since 1990. With a passion for deep powder, big mountain storms, and Sierra sunrises, he’s spent over three decades living and breathing life in the Eastern Sierra. From chasing early morning face shots to dialing in snowpack patterns, Steve brings a seasoned local perspective that only comes with time on the mountain. In late 2004, Steve launched MammothSnowman.com — a grassroots site born out of his desire to share accurate snow and weather info with skiers and riders who love Mammoth just as much as he does. Over the years, it’s grown into a trusted source for real-time reports, forecasts, mountain photos, and insider tips. His daily updates, storm videos, and “boots-on-the-ground” style set him apart from generic apps and tourism-driven reports. When it’s dumping in Mammoth, chances are Steve’s out there riding it, filming it, or breaking it down for the community. Beyond the snow, Steve is deeply connected to the year-round rhythm of the Eastern Sierra. In the summer months, you’ll find him mountain biking, hiking alpine ridges, and exploring hot springs from Mammoth to Bishop. He’s also the founder of EasternSierraMountainBiking.com and SkiingTShirts.com — continuing to expand his mission of sharing the mountain lifestyle through local insight, community, and creativity. Whether you’re chasing storms or singletrack, Steve’s updates help you stay stoked and informed.