California Winter Weather Forecast 2024. Where will it be especially cold? Southwest states (arizona, california, nevada and utah) are forecast to have average temperatures and precipitation, a possible break from last winter's atmospheric rivers.

If winter predictions for southern california are correct, the mountains here on the west coast will be covered by heavy snowfall during the first part of february. There’s a “greater than 90% chance” the el niño, which developed unusually early this year, will last through winter in early 2024, national weather service forecasters said thursday.