Mammoth Mountain & Eastern Sierra Weather Forecast

Footloose Sports Mammoth Lakes (Sponsor)Tuesday, June 29, 2021, @ 8:35 AM 

By Tuesday afternoon there will be a 60% chance of Thunder Storms in all areas of the Eastern Sierra.

Chances of Thunder Storms continue into the evening hours Tuesday with possible scattered showers early on Wednesday morning. By Wednesday afternoon there will once again be a 50% chance of more scattered T Storms.

If we still have residual cloud cover leftover from Tuesday on Wednesday morning that will limit how extensive the Thunder Storms will be on Wednesday during the afternoon and evening hours.

For those of you who are going to be in the back county or out for day use be prepared for some possible big thunderstorms with strong outflow winds, heavy rain, hail, and of course tons of thunder and lightning on Tuesday and Wednesday.

Looking out to Thursday into the July 4th Weekend you can expect to see more chances of Thunder Storms each day.

Mammoth Mountain Ski Patrol Current Conditions 6-29-2021
Mammoth Ski Patrol Conditions

Bishop Conditions @ 8:03 AM from BishopWeather.com

Bishop Weather

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

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

Forecast for Mammoth Lakes @ 8000 Feet

Forecast for Mammoth Lakes @ 8000 Feet

Forecast for Bishop @ 4200 feetForecast for Bishop @ 4200 feet

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

Live Radar View of Central California

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

HRRR Temperature ForecastHRRR Temperature Forecast

Dew Points

Dew Points for Central California
Humidity Levels

Humidity Levels
GFS Precipitation Forecast to 150 Hours

GFS Precipitation Forecast to 150 Hours

ECMWF Precipitation Forecast to 150 Hours

The image below is the GEFS Ensemble going out 10 days / 240 hours.

45 Day Temperature Anomaly Outlook
 
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

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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

Mammoth Mountain and Eastern Sierra Weather Posts

Elementor #102994

Steve Taylor the Mammoth Snowman November 12, 2025 1:15 pm

11-12-25 @ 1 PM – Taking a look at the latest data from the 12z runs, the trend continues: the deep Pacific low is dropping

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11-3-2025 Mammoth Weather Update

Steve Taylor the Mammoth Snowman November 3, 2025 11:43 am

Mammoth Mountain Weather Forecast & Discussion November 3rd, 2025, at 10:30 AM …HIGH WIND WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH LATE WEDNESDAY NIGHT…

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11-2-25 – Mammoth Weather Update

Steve Taylor the Mammoth Snowman November 3, 2025 9:47 am

Mammoth Mountain Weather Forecast & Discussion November 2nd, 2025, at 9 AM – Look for clear skies through Tuesday, with a cooling trend starting on

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10-28-2025 Mammoth Weather Update

Steve Taylor the Mammoth Snowman October 29, 2025 11:00 am

Mammoth Mountain Weather Forecast & Discussion Tuesday, October 28th, 2025 @ 11 AM – Gorgeous fall days continue as ridging and higher heights have taken over the

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10-7-26 – Mammoth Weather Update

Steve Taylor the Mammoth Snowman October 8, 2025 3:54 pm

Mammoth Mountain Weather Forecast Daily zone-based weather updates for Mammoth Mountain,Mammoth Lakes, Crowley, and Bishop. Mammoth Mountain Weather Discussion  Tuesday, October 7, 2025 @ 4

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9-23-25 Mammoth Weather Discussion

Steve Taylor the Mammoth Snowman September 23, 2025 10:41 am

Mammoth Mountain Weather Forecast & Discussion “Daily zone-based weather updates for Mammoth Mountain, Mammoth Lakes, Crowley, and Bishop – plus Snowman’s forecast insights and ECMWF

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ecmwf-deterministic-nepac-z500_anom-

9-23-25 Mammoth Weather Forecast

Steve Taylor the Mammoth Snowman September 23, 2025 10:39 am

Mammoth Mountain Weather Forecast & Discussion “Daily zone-based weather updates for Mammoth Mountain, Mammoth Lakes, Crowley, and Bishop – plus Snowman’s forecast insights and ECMWF

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9-21-25 – Mammoth Weather Forecast

Steve Taylor the Mammoth Snowman September 22, 2025 10:41 am

Mammoth Mountain Weather Forecast & Discussion “Daily zone-based weather updates for Mammoth Mountain, Mammoth Lakes, Crowley, and Bishop – plus Snowman’s forecast insights and ECMWF

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The Cut Off Low on the ECMWF 06Z 9-21-25

9-21-25 – Mammoth Weather Discussion

Steve Taylor the Mammoth Snowman September 21, 2025 10:36 am

Mammoth Mountain Weather Forecast & Discussion “Daily zone-based weather updates for Mammoth Mountain, Mammoth Lakes, Crowley, and Bishop – plus Snowman’s forecast insights and ECMWF

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ecmwf-ensemble-avg-nepac-z500_anom-

9-19-25 – Mammoth Weather Discussion

Steve Taylor the Mammoth Snowman September 21, 2025 8:33 am

Pray for Snow! Mammoth Mountain Weather Forecast & Discussion “Daily zone-based weather updates for Mammoth Mountain, Mammoth Lakes, Crowley, and Bishop – plus Snowman’s forecast

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nam-nest-sierras-instant_ptype-

9-19-25 – Mammoth Weather Forecast

Steve Taylor the Mammoth Snowman September 19, 2025 8:08 am

Pray for Snow! Mammoth Mountain Weather Forecast & Discussion “Daily zone-based weather updates for Mammoth Mountain, Mammoth Lakes, Crowley, and Bishop – plus Snowman’s forecast

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9-12-25-ecmwf-ensemble-avg-nepac-z500_anom-

9-16-25 – Mammoth Weather Discussion

Steve Taylor the Mammoth Snowman September 18, 2025 8:34 am

Pray for Snow! Mammoth Mountain Weather Forecast & Discussion “Daily zone-based weather updates for Mammoth Mountain, Mammoth Lakes, Crowley, and Bishop – plus Snowman’s forecast

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Skid Marks - Looking out towards the tail and the Mammoth Crest beyond.

Mammoth Friday Morning Resort Report

Steve Taylor the Mammoth Snowman August 8, 2025 1:58 pm

……………………………………… Happy Summer Days under Clear Skies…Stage I Fire Restrictions… Bike Park is Open Off The Top with the Park Shuttle and Discovery Chair are

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ecmwf-ensemble-avg-nepac-z50 06Z 8-8-25

Mammoth Weather Update from the Snowman

Steve Taylor the Mammoth Snowman August 8, 2025 1:55 pm

Mammoth Mountain Weather Forecast & Discussion – 93546​ “Daily zone-based weather updates for Mammoth Mountain, Main Lodge, Summit, Mammoth Lakes, Crowley, and Bishop – plus

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6-5-2025 - Photo from Jon G.

Photos June 2025

Steve Taylor the Mammoth Snowman June 19, 2025 2:09 pm

Mammoth Mountain Photos – Late May – June 15th 2025 from Jon G. 6-17-2025 – The final send off of Winter 2025 6-14-2025 – Photo

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Spring Fun on Mammoth Mountain

April – May Photos

Steve Taylor the Mammoth Snowman May 19, 2025 2:19 pm

Mammoth Mountain Photos – April into May 4-29-2025 – Photo: Mackook 4-28-25 – Freshies in Spring 2-23-25 – Pusing Snow for the Super Park Build

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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 MammothSnowman.com 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 MammothSnowman.com a Reality