Mammoth Mountain & Eastern Sierra Weather Forecast

Mammoth Mountain & Eastern Sierra Weather Forecast

Footloose Sports Mammoth Lakes (Sponsor)Thursday, July 8th, 2021 @ 10:07 AM

Eastern Sierra Weather Synopsis:

A very strong ridge of high pressure will be the story over the next week. The higher elevations will see very warm daytime temperatures with dangerously hot conditions below 7000 feet. 

Temperatures look to be at or near record levels Friday into Monday. A minimal increase in moisture will bring isolated thunderstorm (20% chance) activity to parts of the higher elevations of the Sierra today into Sunday.

By next Wednesday highs look to come down about 4-6 degrees from the peak of this high-pressure ridge. 

Lows at night will be warm until well past the midnight hour. If you’re coming up to the area make sure to bring a fan or two or you’re going to be too warm at night for a good sleep.

For this traveling to the area over the next week. Please know that in the Owens Valley there will be an extended period of heat expected.

Areas south of Bishop will be near 110 mid-day. Make sure your vehicle is ready for those conditions.


Air quality remains good at this time – Fire Conditions Remain Extreme in the Area


Mammoth Mountain Ski Patrol Current Conditions 7-8-2021

Mammoth Mountain Ski Patrol
Mammoth Mountain Ski Patrol

Bishop Conditions 7-8-21 from

Bishop Weather


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

NWS Main Lodge Forecast


Forecast for Mammoth Lakes @ 8000 FeetNWS Mammoth Lakes


Forecast for Bishop @ 4200 feetNWS Bishop


Window-cast from the Mammoth Lakes Airport Webcam
Window-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

HRRR High-Temperature Forecast for TodayHRRR High-Temperature Forecast for Today

HRRR Current Dew PointHRRR Current Dew Point


HRRR 18 Hour Precipitation Forecast

HRRR 18 Hour Precipitation Forecast


HRRR Current Humidity Levels

HRRR Current Humidity Levels


ECMWF EPS Precipitation ForecastECMWF EPS Precipitation Forecast

GEFS Precipitation Forecast



ECMWF EPS Ensembles going out 10 days / 240 hours

GEFS Ensembles going out 10 days / 240 hours


Temperature Anomaly Outlook
Temperature Anomaly Outlook
Precipitation Anomaly
Air Quality and Fire Weather Watch

Currently under fire restrictions: the Town of Mammoth Lakes and the Inyo National Forest.

There are no Campfires, BBQs or Smoking allowed now out in the open. Even if you have a fire permit, it is not valid again this season.

Current Eastern Sierra Air Quality
Current Eastern Sierra Air Quality


Mammoth Mountain and Eastern Sierra Weather Posts

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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. 

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