Mammoth Mountain & Eastern Sierra Recreational Weather

Monday, May 20th, 2024 @ 11 AM – Mammoth Mountain and Eastern Sierra Weather this week is looking nice. You can expect mostly clear days with about average temperatures for this time of year.

If you’re planning on coming up for the big Memorial Day Weekend, the weather is looking perfect to kick off the Summer season.

For those planning on going out on the hill today into Friday, here is what you can expect. Today, the skies will be cloudy with a 20% chance of a Thunderstorm. By Tuesday, the skies will clear out, and no buildups or rainfall are expected right through Memorial Day.

Temperatures at the Main Lodge at Mammoth Mountain will be in the low 50s today, mid-50s midweek, and low 50s at the end of the week.

For the Memorial Day Holiday, expect mid to upper 50s at Main Lodge. Night time lows this week into next weekend will be in the low to mid-30s at the 9000-foot level.

Winds on Mammoth Mountain will be SW today at 5-15 MPH with gusts up to 20 MPH. On Tuesday, the flow turns NE at 10-20 with gusts in the 20-30 MPH range possible. By Wednesday and Thursday winds will be back to the SW at 10-15 MPH with gusts to 25 MPH.

Looking at temperatures in Mammoth Lakes, expect highs this week into the upper 50s to the low 60s, with mid-60s expected this upcoming weekend.

For Toms Place to Crowley Lake, expect mid- to upper-60s with nighttime lows in the upper 30s to lower 40s. And for Bishop to Mill Pond, expect upper 70s to start the week and then low- to mid-80s right into Memorial Day. Yahoo, no 90s for Mill Days this year.

Snowman

NWS Main Lodge Forecast - Mammoth Mountain Weather Image
NWS Main Lodge Forecast – Mammoth Mountain Weather Image
Satellite View of the Eastern Pacific and California
Satellite View of the Eastern Pacific and California

MSLP GIF out 10 Days – The pattern for the next week is one of High Pressure out on the Eastern Pacific with waves of weak inside sliders dropping into the great basin. There will be just enough instability at times from those to kick up some thunderstorms. Don’t be surprised if T Storms get added back into the main forecast possibly later this week and into the weekend. This pattern will keep the area with some perfect late spring weather. Warm days with cool nights, how blessed we are this Memorial Week.

MSLP = The mean sea-level pressure (MSLP) is the atmospheric pressure at the mean sea level. This is the atmospheric pressure normally given in weather reports on radio, television, and newspapers or on the Internet.

ECMWF MLSP - Here is the forecast for the next 10 Days
ECMWF MLSP – Here is the forecast for the next 10 Days

Temperature Anomaly GIFCool to warm to cool again is the cycle we are in over the next 6 days.

*The term temperature anomaly means a departure from a reference value or long-term average. A positive anomaly indicates that the observed temperature was warmer than the reference value, while a negative anomaly indicates that the observed temperature was cooler than the reference value.

Temperature Anomaly GIF - Mammoth Mountain Weather Image
Temperature Anomaly GIF – Mammoth Mountain Weather Image

The Wind Forecast GIF Winds will be picking up on Tuesday and Wednesday with gusts in the 25-35 MPH range possible above the 9000 foot level. The yellow, orange, and red colors show wind speeds in the 30-50 MPH range. When you see the brown and whitish colors, the lifts on Mammoth Mountain will be closed.

Wind Speed Forecast GIF - Mammoth Mountain Weather Image
Wind Speed Forecast GIF – Mammoth Mountain Weather Image

QPF Forecast Image – The QPF forecast has some possibly wet T Storms forming this afternoon over Mammoth and along the crest. Quantitative Precipitation Forecasts, or QPFs, depict the amount of liquid precipitation expected to fall in a defined period of time. In the case of snow or ice, QPF represents the amount of liquid that will be measured when the precipitation is melted. 

QPF Forecast - Mammoth Mountain Weather Image
QPF Forecast – Mammoth Mountain Weather Image

Full 16-Day ECM 500mb

ECMWF 500mb Height Anomaly - Mammoth Mountain Weather Image
ECMWF 500mb Height Anomaly – Mammoth Mountain Weather Image

 

Mammoth Mountain Weather - Outlooks from NOAA

DWP Precipitation for Mammoth Pass & the Eastern Sierra

El Nino - La Nina - Neutral Watch

El Nino Updated Information
El Nino Updated Information
El Nino Chart 3
El Nino Chart 3

El Nino Chart 1

El Nino Chart 2

El Nino Chart 4
El Nino Chart 4
El Nino Chart 5
El Nino Chart 5
El Nino Chart 6
El Nino Chart 6

* Mammoth Mountain and Eastern Sierra Weather is updated several times a week by local Steve Taylor. The goal is to provide detailed weather forecasts presented in an easy-to-read format. This isn’t a Hype, one-and-done model-run website. It’s just the basic facts from how I see it after 40 years of being involved in the local weather and recreation. And yes, I use Weather Bell for my forecasting data.

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Author – Steve Taylor – The 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 reports. (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 and Bishop, along with KTLA, AP, Fox, ABC, CBS, and NBC News.

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