Mammoth Weather
Mammoth Lakes 7,880 ft · Mammoth Mountain 11,053 ft
About 0.6″ of snow at Mammoth Mountain (0.1–2.9″ likely) and 0.35″ of precipitation in Mammoth Lakes over the next 10 days, mostly Sun.
Updated Oct 8, 10:14 AM PDT
Latest Outlook
Hurricane Rachel and a Possible Cutoff Low: Will the Sierra Get In On It?
My friends... Today is another stunner of a day on the Eastside! The next few days should stay warm and dry. Then, early next week, a delicate forecast is in store as several ingredients come together. I've been working on my own tools for interpreting uncertainty in forecasts, and this is the perfect opportunity to put them to work! Two complex factors are at play on Sunday going into Monday. The first of those is a trough diving down from the north, bringing in some cooler air. It's not certain how far south it will dig or if it closes into a cut-off low. The second ingredient is Hurricane Rachel, which is recurving and will send its remnant moisture very near to the coast of Southern California. The most likely outcome is that this moisture impacts parts of Southern California and the Desert Southwest, bringing snow to the high terrain of Utah and the Great Basin. There's currently a lower chance that some moisture wraps up into this trough, impacting the Sierra. IF this did happen, it could bring us modest rain and some snow. As of now, this is just something to keep an eye on!
Read full outlook →Right now
Town · 7,880 ft
62°
Mostly Clear · H 73° L 46°
- 10-day snow
- Trace
- up to 0.5″
- 10-day precip
- 0.35″
- 0.03–0.70″
Summit · 11,053 ft
54°
Mostly Clear · H 61° L 45°
- 10-day snow
- 0.6″
- 0.1–2.9″
- 10-day precip
- 0.49″
- 0.04–0.84″
On the mountain · live stations
- Summit temp
- 49°F
- Summit wind
- N 10 mph, gusts 17
- Snow depth (9,014′)
- 0″
- New snow, 24 h
- 0″
Observed Oct 8, 10:30 AM
Next 10 days
Thu
10/8
73° 46°
Summit 61°/45°
Dry
Snow level 12.0k′
Fri
10/9
68° 43°
Summit 56°/40°
Dry
Snow level 11.0k′
Sat
10/10
58° 35°
Summit 45°/33°
❄ Trace
💧 0.01″
Snow level 9.5k′
Sun
10/11
52° 32°
Summit 39°/29°
❄ 0.3″
💧 0.26″
Snow level 8.5k′
Mon
10/12
46° 29°
Summit 35°/27°
❄ 0.2″
💧 0.08″
Snow level 7.5k′
Tue
10/13
49° 29°
Summit 37°/27°
❄ Trace
💧 Trace
Snow level 8.0k′
Wed
10/14
54° 32°
Summit 43°/30°
Dry
Snow level 8.5k′
Thu
10/15
57° 33°
Summit 45°/31°
Dry
Snow level 8.5k′
Fri
10/16
54° 28°
Summit 43°/20°
Dry
Snow level 9.0k′
Sat
10/17
57° 31°
Summit 47°/23°
Dry
Snow level 9.5k′
Live cams
All Eastern Sierra cams →
Full 10-day table and forecast in words
- Mammoth Lakes (7,880 ft): Thu 73°/46° and mostly clear, Fri 68°/43° and mostly clear, Sat 58°/35° and clear. Snow over the next 10 days: about 0″ (0–0.5″ likely), from about 0.35″ of liquid precipitation. The weather models disagree, so confidence is low.
- Mammoth Mountain (11,053 ft): Thu 61°/45° and mostly clear, Fri 56°/40° and clear, Sat 45°/33° and mostly clear. Snow over the next 10 days: about 0.6″ (0.1–2.9″ likely), from about 0.49″ of liquid precipitation. The weather models disagree, so confidence is low.
Thu 10/8
Mostly Clear
TownSummitHi / lo73° / 46°61° / 45°Snow——Precip——Snow level 12,000 ft · Wind E 12 mph
Fri 10/9
Clear
TownSummitHi / lo68° / 43°56° / 40°Snow——Precip——Snow level 11,000 ft · Wind SW 19 mph
Sat 10/10
Mostly Clear
TownSummitHi / lo58° / 35°45° / 33°Snow—Traceup to 0.3″Precip0.01″0–0.03″0.02″0–0.04″Snow level 9,500 ft · Wind SW 50 mph
Sun 10/11
Mostly Cloudy
TownSummitHi / lo52° / 32°39° / 29°Snow—0.3″0–1.6″Precip0.26″0.01–0.45″0.34″0.01–0.53″Snow level 8,500 ft · Wind 27 mph
Mon 10/12
Mostly Cloudy
TownSummitHi / lo46° / 29°35° / 27°SnowTraceup to 0.3″0.2″0–0.8″Precip0.08″0.02–0.20″0.13″0.03–0.25″Snow level 7,500 ft · Wind E 15 mph
Tue 10/13
Partly Cloudy
TownSummitHi / lo49° / 29°37° / 27°Snow—Traceup to 0.2″PrecipTraceup to 0.02″Traceup to 0.02″Snow level 8,000 ft · Wind ESE 11 mph
Wed 10/14
Mostly Clear
TownSummitHi / lo54° / 32°43° / 30°Snow——Precip——Snow level 8,500 ft · Wind SW 10 mph
Thu 10/15
Clear
TownSummitHi / lo57° / 33°45° / 31°Snow——Precip——Snow level 8,500 ft · Wind SSW 11 mph
Fri 10/16
Clear
TownSummitHi / lo54° / 28°43° / 20°Snow——Precip——Snow level 9,000 ft · Wind —
Sat 10/17
Clear
TownSummitHi / lo57° / 31°47° / 23°Snow——Precip——Snow level 9,500 ft · Wind —
Snow and precipitation (liquid: rain plus melted snow) are the multi-model median with the likely range (25th–75th percentile). Forecasts combine the National Weather Service with the ECMWF, AIFS, GFS and Canadian ensembles.
Roads
- US 395: No restrictions
- SR 203: No restrictions
- SR 120: No restrictions
From Caltrans.
Detailed forecast charts
Mammoth Lakes
7,880 ft
Snow Level
Precipitation
Snowfall
Mammoth Mountain
11,053 ft
Snow Level
Precipitation
Snowfall
Dig deeper
- Model forecasts for Mammoth · every model side by side, out to 15 days
- Conditions & snowpack map · snow depth and station readings
- Radar · live precipitation