Mammoth Mountain & Eastern Sierra Recreational Weather
Monday, June 17th, 2024 @ 5 PM – Here is what you can expect in the High Country into Friday: Mid-day temperatures at the 9000-foot level (Main Lodge / Lake Mary) will be in the upper 50s into Tuesday, with overnight lows in the low 30s.
Temperatures will rise by Wednesday. Expect mid-day highs into the mid-60s, reaching the low 70s by Friday. Overnight lows will be into the mid-40s by Wednesday and into the low 50s by Friday.
Winds on Mammoth Mountain and over the higher elevations will be SW at 5-15 MPH, with gusts up to 20-25 MPH at times today. Tonight into early Tuesday, winds will shift to the North and then back to the west to southwest at around 5-10 MPH.
Temperatures for Mammoth Lakes will be in the upper 60s, with nighttime lows in the low to mid-30s into Tuesday. By Wednesday into Friday, you can expect 10-12+ degrees of warming, putting Mammoth Lakes at the 80 mark by Friday. Winds will be out of the SW at 5 – 10 MPH, with gusts to 15 MPH at times.
Mid-day temperatures from Crowley Lake to Toms Place will be in the mid-70s, with nighttime lows in the mid-30s through Tuesday. Ten degrees of warming Wednesday into Friday is expected. By late in the week, overnight lows will be in the upper 40s to low 50s.
For Bishop to Mill Pond, Summer is on, with mid-afternoon temperatures expected in the mid to upper 80s the next few days. By Thursday into Friday, the 90s will be back, as is expected during late June.
Tonight’s overnight lows will be in the 40s and then into the 50s the rest of the week. Bishop will experience gusty north winds from Monday afternoon into Tuesday. Wind speeds look to be 10-20 MPH, with gusts in the 30-40 MPH range.
Snowman
Today’s Mammoth / Eastern Sierra Weather Story: A deep low is sliding into the Great Basin today, bringing cooler air and gusty north winds at times.
Expect some areas to have a light freeze on Tuesday before temperatures begin to moderate a bit on Wednesday. The deep low will be replaced by a strong ridge of high pressure that will bring warm temperatures to the high country and hot temperatures to the lower elevations.
Today’s model runs have the high-pressure ridge a bit less intense. It does like low 80s for Mammoth and low 100s for Bishop; welcome to Summertime.
MSLP GIF out 7 Days – Clear and dry weather will turn hot and dry by the weekend, with just a slight chance of thunderstorms later in the weekend.
The MSLP = The mean sea-level pressure (MSLP) is the atmospheric pressure at the mean sea level. It is usually shown on radio, television, newspapers, or Internet weather reports.
15-Day ECM 500mb Anomaly GIF: This is the full 15-day run of the ECMWF Ensemble model. I find this solution is right more often than not compared to the other models. I’ve been using the Euro version since Howard taught me this was the model to look at back in the early 90s. Until about a year ago, you had to pay to get access to the ECMWF.
Temperature Anomaly GIF: Over the next ten days, we will start cooling and then warm up quickly later in the week and into next weekend. It’s going to be time to bring your fans with you when you travel up, or you’ll be hot if you stay in a condo.
*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.
The Wind Forecast GIF – Looking at the National Blend of Models wind forecast, wind speeds over the next week will be gusty during the afternoon and early evening hours. That’s when you can expect SW winds at 10-25 MPH over the high country and wind-prone areas of the Eastern Sierra.
Jet Stream – This is the ECMWF ENS Run
45 Day ECMWF ENS Run – Looking like the Dog Days of Summer in July are going to be hot. Nothing new there for the Eastern Sierra and the Mammoth Lakes area.
Summer 2024 & Longer Range Outlooks: Expect above-average temperatures with a below-average monsoon season for the Summer Weather Season. I am not 100% convinced we will be as dry as models have shown during the spring.
Now that it’s June, I’d like to start looking at the ECMWF Seasonal Precipitation Model runs out six months. Below, you will find the 500mb Height anomaly for each month into November. Those will be followed the the precipitation anomaly images for each of those months.
Last Update from DWP Precipitation for Mammoth Pass & the Eastern Sierra
El Nino - La Nina - Neutral Watch
* 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.
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