Mammoth Snowman Report
Monday, May 19th, 2025 @ 9 AM: Good morning. It’s a gorgeous day on Mammoth Mountain and across the Eastern Sierra. The weather looks great with warmer days this week, right through the big Memorial Day Weekend.
Checking in on conditions at the top of Mammoth Mountain (11,053 feet), the temperature is 31 degrees, and the NW wind is 22 mph, gusting to 30 mph. Down at the Main Lodge, the temperature is 41 degrees, and the winds are out of the ESE at 1 to 8 MPH.
This weekend is the traditional kick-off to Summer in the Eastern Sierra. There will be many activities and events to participate in, along with Skiing and Snowboarding at Mammoth Mountain. Campgrounds are also opening up for added enjoyment over this first Holiday of the Summer 2025 season.
Scroll down the page, and I will cover everything in more detail so you have a great week and Holiday here in Mammoth and around the Eastern Sierra.
Almost Daily Photo: Classic Spring Days out on Mammoth Mountain.
👇 Live from the Mountain
Recreational Weather Forecast – Mammoth Mountain / Eastern Sierra
🌤️ Weather Update – May 19, 2025
A warming trend kicks off today, with above-normal temperatures continuing through the week and into next weekend—great news for outdoor plans. Later this week, expect increasing winds and elevated fire weather conditions in lower elevations, with a slight chance of showers from a few build-ups in the area.
Looking ahead to Memorial Day Weekend, conditions are shaping up to be dry and warm overall. However, a few isolated mountain showers can’t be ruled out. It should be a fantastic time for outdoor fun at all elevations.
Quick Zone Forecasts:
🎿 Mammoth Mountain – Summit (11,053 ft)
- Today (Mon, May 19): Sunny and breezy. High: 49°F. Winds W 15–25 mph, gusts to 35 mph.
- Tuesday (May 20): Sunny. High: 51°F. Winds W 10–20 mph.
- Wednesday (May 21): Sunny and breezy. High: 53°F. Winds W 15–25 mph.
🚡 Mammoth Mountain – Main Lodge (~8,900 ft)
- Today (Mon, May 19): Sunny. High: 60°F. Winds W 10–20 mph.
- Tuesday (May 20): Sunny. High: 62°F. Winds W 10–15 mph.
- Wednesday (May 21): Sunny and breezy. High: 64°F. Winds W 15–25 mph.
🏔️ Mammoth Lakes (7,880 ft)
- Today (Mon, May 19): Sunny. High: 68°F. Winds SW 10–15 mph.
- Tuesday (May 20): Sunny. High: 70°F. Winds SW 10–15 mph.
- Wednesday (May 21): Sunny and breezy. High: 73°F. Winds SW 15–25 mph.
🌵 Bishop, CA (4,150 ft)
- Today (Mon, May 19): Sunny and breezy. High: 86°F. Winds SW 10–20 mph
- Tuesday (May 20): Sunny. High: 89°F. Winds SW 10–15 mph.
- Wednesday (May 21): Sunny and very warm. High: 92°F. Winds SW 10–15 mph.
Local’s Snow Report – Snow Season 2025
5-19-25 Snow Conditions: This morning, expect the snow to be firm with softening expected by mid-morning on the lower groomers. With the blue skies expected, the corn cycle will start again today.
Local’s Choice: Early morning, firm groomer laps via Saddle Bowl to Forest Trail to the Stump Alley Express and then back to the top of 3 again. As the day warms up, a glide down World Cup into St Antone can’t be beat when they drop the race ropes around 11 AM. If you like a nice big bump line, the moguls in West Bowl are tight and deep from the local bashers.
Up Top Cornice is fun as it softens up by mid-morning. Scotties is also groomed and gets less traffic, so the snow stays longer on that side. The Drop Outs and Wipe Out are all good, as are Climax and the Sign Line.
For more fun this week, consider cleaning and hot waxing your bases each night as the area warms up. This will reduce the spring drag from the wet snow. If you cannot perform this service on your own, Fast SKi Sports offers a Free Hot Wax Service, and they can teach you how to wax your bases at home each night. Just ask for Matt.
>>> If you’re coming to ski and snowboard the remainder of this season, please remember that all winter operations are now out of Main Lodge and the Mill.
Weekday Lifts are (weather permitting) chairs 1, 2, 3, 6, 11, 23, and G1 and G2 from 7:30 to 2 PM. The Unbound Express (6) is open from 8:30 AM to 3:00 PM. Chairs 5 and 10 are running on weekends and this Memorial Day. Starting May 27th, expect chairs 1, 3, 23, and G1 and G2. Chair 2 will run as long as they can keep access to the Mill going, I’m hearing. No word on a closing day yet, so the lifts will run into June, how long is anyone’s guess.
Snowman
Other Things to Do During Spring 2025
Mammoth Lakes Basin: The basin is now open only to pedestrian and bike traffic ONLY. The Inyo National Forest will continue working with Mammoth Lakes officials and other partner agencies to plow the remaining snow as quickly as possible. However, there is no anticipated opening date for vehicular access.
Spring Mountain Biking: Lots to ride as the spring thaw is on with the current snow line around the 8,500-foot level. The Mammoth Mountain Bike Park has plans to open May 23rd with runs out of Canyon and Eagle Lodge only.
We’ll update you as we hear more information from the Marketing Dept.. Looks like a long, solid year is upcoming for the bike park. Get ready to ride!
Check out my new (but still under construction) Eastern Sierra Mountain Bike website, which has more information on where to ride; here is the link.
Scenic Gondola Rides: Riding to the top of Mammoth Mountain is a fantastic experience. The views are breathtaking as you ride up. There is an interpretative center at the Top Station with more information about the Eastern Sierra, Mammoth Mountain, and the mountain peaks you can see from the 11,000-foot level. The ride-up should be on everyone’s bucket list who does not ski or ride.
Click here to learn more and view a video preview of the ride up to the top of Mammoth Mountain.
Hiking / Walking: Mid-Spring offers fun hiking/walking options depending on the snow levels. During the drier snow seasons, the lower sections of the Mammoth Lakes Town Loop are an excellent walking option, and the last time I checked, they were all open and cleared of snow.
The second option is the Lower Rock Creek Trail, about 10 miles south of Mammoth Lakes, just past Tom’s Place if you’re heading south of 395. When we checked here last, all the snow and ice were gone in all three sections of LRCT.
Events – May through June 2025
May 2025
- Freestyle Ski & Snowboard Camp
May 3–4 @ Mammoth Mountain
Two-day terrain park camp for intermediate+ skiers and riders (age 10+). - Mammoth Lakes Film Festival
May 21–25 @ Multiple venues
Celebrating bold, independent films and emerging artists.
June 2025
- Monster Energy Mammoth Motocross
June 20–29 @ Sherwin Creek Road
Premier off-road racing with motocross legends and rising stars. - Mammoth Feel Good Festival
June 27–28 @ The Village Plaza
Kick off summer with music, food, drinks, and mountain air vibes
Author: Steve Taylor, The Mammoth Snowman. For over 30 years, Snowman has meticulously studied Mammoth Mountain’s weather and snow conditions. Since March 1991, he’s used marked ski poles to measure fresh snowfall across the mountain.
He began sharing his insights in 1990 on the Mammoth BBS system, later moving to RSN Forums, and launching MammothSnowman.com in 2004 with a video and photo blog (pre-YouTube). A Facebook presence followed in 2008, with a dedicated group added in 2016. His reports, videos, and photos have been featured on local Mammoth TV stations, as well as national news outlets including AP, Fox, ABC, CBS, and NBC.
