California Mountain Areas – Rain and snow chances are expected to increase across California’s mountain regions during the January 7–13 period, according to the latest federal weather outlook, raising the potential for winter travel impacts at higher elevations.
According to the National Weather Service Climate Prediction Center, California’s mountain areas are included in a region forecast for near- to above-normal precipitation during the 8–14 day window. In mid-January, this pattern strongly favors snow at higher elevations, with rain or a rain-snow mix possible at lower mountain elevations during warmer periods.
Much of the Sierra Nevada and other mountain ranges fall within the 33–50% probability range for above-normal precipitation, indicating an increased likelihood of multiple precipitation events rather than a single storm. Snow levels may fluctuate during this period, creating variable conditions across different elevations.
Temperature outlooks for the same timeframe indicate near-normal temperatures across much of California. This setup increases the chance of changing precipitation types, particularly during overnight and early morning hours, and supports continued snow accumulation at pass levels and higher terrain.
For commuters, freight operators, and travelers, the developing pattern may lead to hazardous driving conditions over mountain routes such as Interstate 80 over Donner Pass, U.S. 50 at Echo Summit, State Route 88 at Carson Pass, and State Route 108 over Sonora Pass. Reduced visibility, snow-covered roads, chain controls, and temporary closures are possible during active weather.
Forecasters emphasize that 8–14 day outlooks reflect probability trends, not specific snowfall totals or storm timing. Residents and travelers are encouraged to monitor daily forecasts and updates from the National Weather Service and Caltrans as the period approaches.
No winter storm watches or warnings are currently in effect based solely on this outlook, but the signal supports increased awareness for rain and snow impacts in California’s mountain regions during the second week of January.
