Mammoth Mountain & Eastern Sierra Weather Forecast

Recreational Weather for Mammoth Mountain and Eastern Sierra

Hello good afternoon this is the Snowman with your Mammoth Mountain and Eastern Sierra Weather forecast for Thursday, June 30th, 2022

The WindowCast for today shows clear blue skies and good air quality in all areas of the Eastern Sierra. Just a few clouds around with some afternoon summertime haze.

Winds came up yesterday and are expected to be with us thru the Holiday weekend. Along with the winds, temperatures have cooled off as a deep low-pressure system (for Summer ) will be entering California from the west over the 4th of July weekend.

If you’re going to be out on Mammoth Mountain or up the Mammoth Lakes Basin, or any of the Canyons in the Eastern Sierra, expect cool and breezy weather.

The main cooling from the low will hit on Sunday and continue into the 4th of July.

Highs will be well below average, you’re going to want to have at least a hoodie during the mornings with full leggings.

Most July 4ths are hot hot hot, so it will be a welcome relief to watch the parade in Mammoth with it being cooler and breezy.

Here is the 4th of July on the EPS 500
Here is the 4th of July on the EPS 500

Area Forecasts good into Saturday:

Elevation 8900 Feet @ the Main Lodge and the Mammoth Lakes Basin) Sunny, with highs in the upper 50s to low 60s. Breezy, with a southwest wind of 20 to 25 mph, with gusts as high as 35 mph.

Elevation 7900 Feet @ Mammoth Lakes Sunny, with highs in the mid-60s. Breezy, with a southwest wind of 15 to 20 mph, with gusts as high as 30-35 mph.

Elevation 4200 Feet @ Bishop to Mill Pond Sunny, with highs in the mid-90s. Northwest wind 5 to 15 mph becoming southeast in the mornings. Winds could gust as high as 15-20 mph.

Here are the links to the specific highs, lows, and wind speeds for many of the major recreation points in the Eastern Sierra: Mammoth Mountain Main Lodge, Top of Mammoth Mountain, Mammoth Lakes, June Lake, Crowley Lake, Toms Place, Rock Creek Lake, Bishop & Mill Pond, South Lake.

**Locals Tip: As we move into Summer if you’re coming up bring a fan with you if you’re staying in a condo or home. They help big time when it’s warm and muggy in the high country. We have 4 of them along with ceiling fans that run when it’s Summer time. No AC in Mammoth so be prepared.

Have a great day and I hope to see you out on the hill for some Mountain Bike action soon, Snowman

10 Day Outlook Model Runs

Beyond the holiday weekend highs will remain below average into mid-week and then by late in the week heights start to rise and the Eastern Sierra will really warm up.

The ensembles EPS and GEFS both have around 4 days of heat with Mammoth in the low 80s and Bishop in the upper 90s by the end of next week.

The to hot for comfort GFS has also backed off on the ugly heat on the 18Z run I just saw.

Bottom line is if that high pressure ridge to the east decides to nudge a bit more our way boom heat wave time. For now we can enjoy and not to hot for comfort 4th of July.

Snowman out…

EPS 10 Day Temperature Anomaly Chart 

EPS 10 Day 24 Hour Precipitation Chart

EPS 45 Day Ensemble Mean

There are 2 updates a week that we get for this the EPS 45 Day, the run below is from the 23rd of June.

This is the EPS 45 Day Height Anomaly GIF.

EPS 45 Day Temperature Anomaly Chart – After this week the 45 day chart below does not show any major heat waves.

EPS 45 Day Precipitation Anomaly Chart – There are a couple shots for precipitation later this month.

ECMWF Seasonal Ensemble Mean - Next Update 7-6-22

Here is the ECMWF Seasonal Ensemble Mean forecast that goes out 6 months. This model updates once a month with the images coming at around the 5th of the month.

The trend for temperatures over the next 6 months is more of the same with above normal highs. The Fall season at this point looks toasty. Let’s hope it flips over to a cooler solution over the next few months.

I know I am hoping and praying for a nice cold November.

Looking below at the Precipitation Anomaly they have average precipitation right through September. October also looks drier with November even drier before the December run has Mammoth Mountain picking up average to above average snowfall.

Below is the single model run for November 2022

Below is the single model run for December 2022

ENSO - La Nina & El Nino

6-2013-22 Looking for latest information on the ENSO?

Satellite Image

NOAA GOES 17 Full Pacific Satellite View
NOAA GOES 17 Full Pacific Satellite View
Goes 17 West Coast Satellite View
Goes 17 West Coast Satellite View

Mammoth Mountain and Eastern Sierra Weather Posts

Who Are We?

Steve Taylor – Mammoth Snowman Over the last 30+ years, Snowman has spent countless hours studying and learning about Mammoth Mountain Weather and Snow Conditions first hand. He has been skiing around the hill with marked ski poles since March of 1991 so he can measure the fresh snowfall amounts out on the hill. 

Snowman started blogging this information back in 1990 on the old Mammoth BBS system, then the RSN Forums and then on to in 2004 with Video & Photo Blog report. (No YouTube back then). Facebook got added to the fold back in 2008 and then the Facebook Group in 2016. 

Reports, videos, and photos from the website have been featured on both local TV Stations here in Mammoth, along with AP, Fox, ABC, CBS, and NBC News.

Ted Schlaepfer – Mammoth WeatherGuy – The Powder Forecast – Posted Tuesday and Fridays at 5 PM November into Mid May. These forecasts are now responsible for many people getting multiple powder days on Mammoth Mountain over the years.  

Ted’s Bio: Ted has been a full-time Meteorologist (CCM) for the past 25+ years. He has always been fascinated with the weather,” skiing was just a natural extension of my love for snow and rain. I started skiing at age 5,  first discovered Mammoth in 1979 as a youth, and have been a regular visitor since the late ’80s.”.

Here is the link to The WeatherGuys Powder Forecast Page. 

Click Here to Learn More About the People Who Make a Reality