Mammoth Mountain Weather Forecast & Discusion

January 30th, 2025 @ 8 AM – A new series of storm systems is about to hit the area. Over the next 7-10+ days, Mammoth is looking to possibly pick up 3-5 feet of heavy base snow. This is just what we need to refresh the base and restart the winter. 

As of this morning models have Mammoth Mountain on the southern edge of the forecast AR band; however, if the band sinks south a bit, the snowfall amounts expected could double.

If you are out on the hill today, expect clear skies. Temperatures at the first chair will be in the upper 20s to lower 30s, and midday temperatures will be in the mid-40s from Main Lodge down to Canyon Lodge. Over the Mid and Upper Mountain, midday temperatures will be in the mid to upper 30s

Winds at the 9000-foot level will be out of the SW at around 1 to 5 mph. Up Top winds are expected to be out of SW at 5-15 MPH.

On Friday, expect increasing clouds during the afternoon hours and a slight chance of snowflakes late in the day. 

Temperatures at the first chair will be in the upper 20s, and midday temperatures will be in the upper 30s from Main Lodge down to Canyon Lodge. Over the Mid and Upper mountains, midday temperatures will be in the mid to upper 20s to lower 30s.

Winds at the 9000-foot level will be Southwest at 10 to 15 mph with gusts as high as 30 mph. Up Top winds are expected to be out of the Southwest at 25 to 35 mph, with gusts as high as 50-60+ MPH.

Over the weekend, expect light to moderate snowfall at times, with snow levels starting around 7500-8000 feet and rising to 9000 to 9500 feet Saturday night and 9000 feet on Sunday. Snow ratios will be low, with heavy, wet snow falling. Rain is possible on the lower mountain due to the high snow levels.

The first call on weekend accumulations is 6-15 inches above the 9,500-foot level (MC Coy Station to the Top). 3-5 inches are expected around Main Lodge, with limited accumulations below the Mill.

Next week, a stronger system appears in the outlook period days 5-7. This system has a stronger AR band than the weekend system however snow levels will still be above the 7,500 to 8000 foot level. 

The big question that remains is how far south will that AR band reach next and for what duration of time would Mammoth Mountain be under its influence? 

If you’re planning a trip up next week, expect moderate to heavy snowfall Tuesday into Wednesday, followed by a break in the action Thursday and Friday. Of course, Mammoth will also have moderate to strong winds at that time, and the mid- and upper mountain will be on weather hold, so plan accordingly.

Stay tuned in here for the next storm update early Friday morning. 

Have a nice day! Forever Hopefull for a series of Powder Storms, Steve Taylor – the Mammoth Snowman5