Mammoth Mountain & Eastern Sierra Weather Forecast

Mammoth Mountain & Eastern Sierra Weather Forecast

Wednesday, July 14th, 2021 @ 1:25 PM

Synopsis: The heat wave continues to wane with high and low temperatures cooling a few degrees each day.

Eastern Sierra temperatures will be about average for this time of year by Thursday and last into the weekend.

Skies will remain clear with no T Storms through Saturday.

By Sunday day time highs will slowly start to warm up again. Thunderstorms look to also be in the offering starting on Sunday.

These first thunder storms look to be dry, so there are could be new fire starts.

Models show some possible wetter storms moving in by Monday with PWV around .07 or better. That would mean some heavy rain under storms that do develop in the area.

Winds into Sunday will be southwest @ 10 to 15 mph, with gusts as high as 25-35 mph.

A  perfect July forecast to get out and play the next few days.

If you’re going to be planning on doing any day hiking, back packing or mountain biking next week. Plan now on possibly encountering some heavy rain with lot’s of lighting and thunder.

Have a plan now and don’t be caught off guard next week.


Mammoth Mountain Ski Patrol Current Conditions 7-14-2021

Mammoth Ski Patrol Weather Center
Mammoth Ski Patrol Weather Center

Cal Trans Window-cast

Mammmoth Mountain from the junction of Highway 203 and 395Highway 203 into Mammoth Lakes

Current Eastern Sierra Air Quality

Window-cast from the Mammoth Lakes Airport WebcamWindow-cast from the Mammoth Lakes Airport Webcam

Live Radar View of Central CaliforniaLive Radar View of Central California

GOES Satellite View of California and the West CoastNOAA Goes 17 Satellite View

Forecast for the Mammoth Lakes Basin & Main Lodge @ 8900 feet

NWS Main Lodge & Mammoth Lakes Basin
NWS Main Lodge & Mammoth Lakes Basin

Forecast for Mammoth Lakes @ 8000 Feet

NWS Mammoth Lakes

Forecast for Bishop @ 4200 feet

NWS Bishop
NWS Bishop


HRRR High-Temperature Forecast for Today

HRRR 18 Hour Precipitation Forecast


HRRR Current Dew Point


HRRR Current Humidity Levels

ECMWF EPS Precipitation Forecast



ECMWF EPS Ensemble going out 10 days / 240 hours


Temperature Anomaly Outlook


Precipitation Anomaly Outlook



Snow Shoeing in Mammoth Lakes and Southern Mono County

Snow Shoeing in Mammoth Lakes is one fun sport. From a family event to a full-on workout or working in your yard. Snowshoes are a fun and useful tool to learn how to use.

Snowshoes have been around for many centuries. The older types were made of wood and rope, they were heavy and really only used for travel and survival.

Today’s Snow Shoes have evolved big time over the last 30 years. When you rent or buy a pair of snowshoes today you’re getting a lightweight highly effective version of what has been used for centuries.

Here in Mammoth Lakes snow shoes serve many purposes. Everything from the sport of trail hiking to use around the house. Just about every utility company carries snowshoes as well. Snowshoeing at Camp High Sierra
The Snow Shoes keep you on top of the snow rather than having to body plow through it. When our winters bring monster storms and turn Mammoth Lakes into a winter wonderland, just getting around your home can be impossible. Snowshoes allow you to get enough float and surface area so traveling and working in deep snow is possible.
There are a number of reasons to enjoy the benefits of snowshoeing:

* A fun, inexpensive, and active way to visit the outdoors
* Simple to learn and easy to access places covered with snow
* Great cardiovascular exercise for adults and for kids
* An entertaining social group activity
Here are some local areas you can go and check out:
Mammoth Lakes Visitors Center – Shady Rest
Use this parking area as a launching point to miles of trails and off-track areas to explore on shoe shoes. Before you venture out stop in the visitors center for maps and current conditions in the shady rest area.

The Mammoth Meadow
Once the meadow is sealed in with snow it’s time to explore this area on snowshoes. The views from the meadow are some of the best in the town of mammoth lakes. The meadow trail is about 1 1/2 miles if you do a loop of the meadow. Watch out for the creek as a deep snowpack can hide the water just underneath.

Sierra Meadows Area
This is a mixed-use area so be ready for snowmobile, and cross country skiers. The sierra ranch road serves as your main gateway to fun in this area. The town plows out a parking area and you must obey the signs and rules they have posted or risk getting a big ticket. Once you’ve parked and have gotten your Snowshoes secured, you can access all of the Sherwin range from this starting point

Mammoth Mountain to the Minarets View Point
Park at the ski area and then walk with your gear up to the mammoth mountain inn. From the inn parking area, you can snowshoe right up a snow-covered highway 203. In the first section, you will be sharing with downhill skiers, the rest of the trail is shared use with snowmobiles and cross country skiers. This is a nice long snowshoe track that leads you to the Sierra crest and some very impressive views. Round trip it’s a moderate trip at about 5 miles.

Mammoth Lakes Basin
During the winter they plow the road up to tamarack lodge and then gate off the rest for winter use. This is a great place to go if you’re looking for quiet time. No Snowmobiles are allowed in the lakes basin until the third week of April so it’s peaceful and nice in this area. Tamarack Cross Country area takes up all of the paved road areas in the Lakes Basin.

Snow Shoeing in this region is allowed, but you have to stay off the groomed cross-country ski trails. Stay to the side and all is well. Once in the lakes basin, there is a lot of room to roam without interfering with the cross country skiers.

Mammoth Creek Park Trail
Park at the Mammoth Creek Park off of Old Mammoth Road just past The Stove restaurant. The trail starts just across the road from the parking area.

The adventure follows Mammoth Creek for about 1/4 mile before it breaks away and follows a very scenic route all the way down to the Mammoth Lakes Skate Park. This route can take on a lot of wind and sun exposure so conditions are going to vary. The round trip is around 3 miles. The trail is mostly downhill to the skate park and uphill back to the car. Bring a camera for this snowshoe adventure, as the views over the open land are awesome.

During a storm cycle, it’s always fun to put your snowshoes on at home or the condo and take a stroll around the area. Snowshoes add a new dimension to storm fun. They let you glide thru the freshly fallen snow, almost like skis or a snowboard.
Safety from Snowshoe Magazine:
Snowshoeing is an extremely safe sport. It is also one of the only winter-specific sports that do not depend upon sliding or speed. The manageable and maneuverable nature of modern aluminum-framed snowshoes and the soft forgiving nature of snow combine to make the risk of injury while snowshoeing very low. Snowshoeing involves a natural motion similar to walking, to which the body is accustomed, and is very low impact due to the cushioning of snow. Any wintertime outdoor activity has its risks and snowshoeing is no exception. Take care to avoid the following hazards:

* First it’s a good idea to always bring Food and Water with You! Just do it…

* Thin ice: Do not walk over frozen water unless you are sure of its safety. Even after a long freeze, a body of water may have thin spots. Be careful!

* Hidden obstacles: Beware of barbed wire fences, holes, or uneven terrain under the snow. Tread lightly!

* Getting lost: You can usually follow your tracks out but beware of storms and wind that can cover them up. Always let someone know where you are & when you expect to return.

* Wildlife: Please keep your distance and respect their environment. The critters out there in winter have a rough time as it is!

** Frostbite: Protect all exposed appendages, especially as the temperature drops or the wind increases. Insulated gloves or mittens and thick hiking socks will keep those digits toasty, and a mask or balaclava can keep your nose from growing icicles.

* Hypothermia: Staying warm means keeping your body dry inside of your clothes and out. Dress properly for your time outside. Wearing a damp, sweaty, cotton t-shirt outside in the wintertime can be just as chilly as falling in open water. Know your limits, stay hydrated, and bring extra layers on long outings in isolated areas.

* Altitude sickness: Higher elevations may have better snow, but bring the risk of altitude sickness. Stay within your limits, keep well hydrated, and ascend gradually.

* Avalanches: Familiarize yourself with the terrain and potential dangers before you depart. If you travel in areas where avalanches are a possibility, it is strongly recommended that you seek proper safety and rescue instruction and carry the appropriate equipment.

Forecasting Weather Images

NOAA GOES 17 Full Pacific Satellite View
NOAA GOES 17 Full Pacific Satellite View
Goes 17 North Pacific Satellite View
Goes 17 North Pacific Satellite View
Goes 17 West Coast Satellite View
Goes 17 West Coast Satellite View
24 QPF Forecast for the USA
24 QPF Forecast for the USA
Day 2 QPF Chart for the USA
Day 2 QPF Chart for the USA
Day 3 QPF Chart for the USA
Day 3 QPF Chart for the USA
Day 4-5 QPF Chart for the USA
Day 4-5 QPF Chart for the USA
Day 6-7 QPF Chart for the USA
Day 6-7 QPF Chart for the USA

Mammoth Mountain 6-10 Day Weather Outlook

Mammoth Mountain 6-10 Day Precipitation Outlook

Mammoth Mountain 10-14 Day Temperature Outlook

Mammoth Mountain 10-14 Day Precipitation Outlook

PNA Forecast Chart
PNA Forecast Chart
Arctic Oscillation Forecast
Arctic Oscillation Forecast

The MOJO Outlook

MOJO - All Model Mean Forecast
MOJO – All Model Mean Forecast
MOJO - NCEP Global Ensemble Forecast System (NCPE)
MOJO – NCEP Global Ensemble Forecast System (NCPE)
MOJO - NCEP Global Bias-Corrected Ensemble Forecast System (NCPB)
MOJO – NCEP Global Bias-Corrected Ensemble Forecast System (NCPB)
MOJO - Climate Forecast System (NCFS)
MOJO – Climate Forecast System (NCFS)
MOJO - ECMWF Forecasts System (ECMF)
MOJO – ECMWF Forecasts System (ECMF)
MOJO - CMET Canadian Forecast
MOJO – CMET Canadian Forecast

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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