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Mammoth Reservation Bureau
Post Office Box 1608
94 Old Mammoth Road
Mammoth Lakes, CA 93546
800.462.5571 or 760.934.2528
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Mammoth Lakes Forecast
What weather conditions await you in Mammoth Lakes, California? It is important to monitor the weather and road conditions before heading to the mountains so that you are properly prepared. Knowing the forecast and current temperatures will help you to pack the proper clothing and gear in addition to helping you plan your events and activities while in Mammoth. Remember, it is a completely different climate up here at 8,000 feet!

Also, monitoring the current road conditions will help you decide whether or not you should bring a 4WD vehicle to Mammoth and whether or not to purchase chains. Please keep in mind that from October to June, the weather in the High Sierra can be very unpredictable and we encourage all guests to carry chains in non-4WD vehicles. Purchasing chains in your local area will save you a lot of time and money.

Please check these conditions right before your departure to Mammoth:

Current Road Conditions as reported every 15 minutes by CalTrans (please click on an item):
US Highway 395 (Main Highway to Mammoth)
State Route 203 (Also known as Main Street in Mammoth)
Interstate 5
Interstate 15
State Route 14
US Highway 50
State Route 120 (Route through Yosemite National Park)
State Route 108 (Sonora Pass)
State Route 88 (Alternate route through South Lake Tahoe)
All Other Routes

Or you can call Caltrans. This is a great automated system reporting current road conditions!
Call 1-800-GAS-ROAD (1-800-427-7623).

Current Weather
National Weather Service Forecast (This is by far the most accurate weather for the Mammoth area)
National Weather Service Detailed Scientific Discussion
Current California Warnings
Current Satellite Images
Current Weather and Road Conditions