Mammoth Weather Forecast & Discussion
Wednesday, October 5th at 6:49 AM – The calm clear, and warm weather will continue all week and into the upcoming weekend.
Fall colors are peaking in Rock Creek Canyon and up in Bishop Creek Canyon, now is the time to get up and see them before next week’s big cool down takes its toll on the colors in the higher elevations.
Mammoth Mountain Weather Forecast:
Wednesday into Sunday expect sunny skies, resort level highs at 8900 feet (Main Lodge and the Mammoth Lakes Basin) in the low to mid-60s by mid-day, with overnight lows into the low 40s. Over the upcoming weekend highs by Sunday will have come down about 3-5 degrees.
Winds will be out of the SW @ 5-10 MPH with gusts in the 15 MPH range up top and along Sierra ridges.
Mammoth Lakes Weather Forecast
Wednesday into Sunday expect sunny skies, highs will be in the upper 60s to low 70s with overnight lows in the 40s. Winds will be out of the southwest at 5 to 10 mph at times.
If you’re venturing to Bishop expect clear skies with highs in the mid-80s with nighttime lows in the upper 40s to low 50s.
Next Week: Looks like the first inside slider of the season could bring a chance for a dusting of snow to the high country by mid to late week. Read down the page for the full discussion.
Here are the links to the specific highs, lows, and wind speeds for many of the major recreation points in the Eastern Sierra: Mammoth Mountain Main Lodge, Top of Mammoth Mountain, Mammoth Lakes, June Lake, Crowley Lake, Toms Place, Rock Creek Lake, Bishop & Mill Pond, South Lake.
Please Note: Fire Restrictions are in place on all National Forest Service and BLM Lands in the Eastern Sierra.
Read down the page for all the longer-range outlooks for snow this November and the winter of 2023. If you have questions about the weather or weather-related chat use our Weather forum.
Current Satellite View
Mammoth Mountain 10 Day Weather Outlook & Long Range Discussion
10-5-22 @ 8:11 AM – The 10-Day Mammoth Weather Story:
Going to be ridge city through the weekend with above-average highs on Mammoth Mountain and around the Eastern Sierra.
By next Monday a cut off low well to our south will pump enough moisture our way that Mammoth Mountain and the Eastern Sierra high country could see some cloud build-ups into Tuesday. There is even a slight chance of a rain shower.
After an inside slider type low will drop south into the great basin and then merges with the cut-off low to the south. In the process, there could possibly be a dusting of snow sometime later next week.
Confidence in the track of the low and what moisture it has is very low right now. That’s just too far out this early in the season.
By the end of the 10-day period, that would be 2 weekends out Mammoth looks to have about average highs and lows with clear skies and dry conditions.
Snowman
Here is the EPS Ensemble Model going out 10 days.
EPS – 24 Hour Precipitation
EPS – Temperature Anomaly Ensemble Mean
Long Range Snowfall & Snowmaking Outlook for mid-October into early November
Longer Range models are still showing some snowfall at the end of October and into November now. This would match up with the newest runs of the EPS Seasonal November Forecast that were just posted down the page. Now it’s the waiting game… Snowman
November into March Mammoth Weather Trends
10-5-2022 @ 11 AM – The new run of the EPS Seasonal is out and it continues to show the trend of an average to above-average winter for snowfall. Each run has been getting a bit wetter and this month’s run is the best looking yet.
Of course, now it has to pan out over the next 6 months and this data is no guarantee Mammoth Mountain will get dumped on. Last year at this time the only wet month the seasonal EPS had on this date was December and the rest showed red and dark brown drought colors.
So good vibes moving forward as we start the snow and cold air watch now.
Snowman
