Mammoth Mountain & Eastern Sierra Weather Forecast
This week’s weather story starts will start with some hot temperatures and then we cool a bit and get into a monsoon flow.
We got lucky here in the Eastern Sierra as Washington and Canada are getting hammered with heat from a very strong ridge of high pressure. Had that ridge of high pressure been located over California we could have seen all-time record highs broken in the Eastern Sierra.
Now that we dodged that heatwave all eyes turn toward the monsoonal flow headed our way. By Monday there will be a 40% chance of Thunder Storms in the High Country and a 20% chance for the lower elevations.
With the increased chance of thunderstorms You can expect dew points to be coming up this week, it will feel a bit muggy in our very dry environment.
Moisture looks to increase a bit each day with Wednesday into Friday looking to be the best chance for moderate to heavy rain.
As is always the case with thunders storms, not all areas will be getting really wet, just the higher terrain and a few locations that get caught under one of these storms that happen to roll into the lower elevations.
If your 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. It’s best to go indoors or take cover when you hear thunder. Always have a plan and take action sooner than later. Snowman
Temperatures for the Mammoth Lakes Basin & Main Lodge @ 8900 feet
Temperatures for Mammoth Lakes @ 8000 Feet
Temperatures for Bishop @ 4200 feet
Live Radar View of Central California
GOES Satellite View of California and the West Coast
HRRR Temperature Forecast for Sunday
Dew Points on Sunday Morning
Humidity Levels on Sunday Morning
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.
Forecasting Weather Images
The MOJO Outlook
Mammoth Mountain and Eastern Sierra Weather Posts
Mammoth Mountain Snow Report from the Snowman September, 28th, 2023 @ 8 AM – The Mammoth Mountain Ski Area has an official opening day set
Mammoth Mountain / Eastern Sierra Weather Forecast & Discussion September 7th, 2023 @ 2:29 PM – Recreational Weather Forecast – Sunny skies are forecast on
Mammoth Mountain / Eastern Sierra Weather Forecast & Discussion Monday, May 29th, @ 2:42 PM – Weather Forecast for the Week – A cut-off low
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.