National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Winter Storm Bringing Widespread Hazardous Weather to the Eastern U.S.

A rapidly-intensifying winter storm continues to bring heavy snow, high winds, and blizzard conditions over the Upper Midwest and Great Lakes through today. An Arctic front will lead in a period of gusty to high winds and sharply colder temperatures over the entire eastern U.S. Heavy lake effect snow is then expected from Lakes Erie and Ontario through New Year's Day. Read More >

Hazardous Weather Conditions

Current conditions at

MOUNT ZION (MTZC1)

Lat: 38.39006°NLon: 120.6524°WElev: 2967.0ft.

NA

51°F

11°C

Humidity 63%
Wind Speed WSW 2 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 29 Dec 11:56 AM PST
Extended Forecast for

Ione CA

Dense Fog Advisory December 29, 12:16pm until December 29, 01:00pm
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory December 29, 12:16pm until December 29, 01:00pm

    NOW until 1:00pm Mon

    Dense Fog Advisory

  • This Afternoon

    High: 50 °F

    Mostly Sunny

  • Tonight

    Tonight: Widespread fog, mainly after 3am. Otherwise, partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Fog

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51. Calm wind.

    High: 51 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain after 10am. Cloudy, with a high near 50. Calm wind.

    High: 50 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain, mainly after 10pm. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Rain

  • New Year's Day

    New Year's Day: Rain. High near 55. Chance of precipitation is 90%.

    High: 55 °F

    Rain

  • Thursday Night

    Thursday Night: Rain. Cloudy, with a low around 51.

    Low: 51 °F

    Rain

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 50. Light south southwest wind.
Tonight
Widespread fog, mainly after 3am. Otherwise, partly cloudy, with a low around 38. Calm wind.
Tuesday
Mostly sunny, with a high near 51. Calm wind.
Tuesday Night
Cloudy, with a low around 44. Calm wind.
Wednesday
A 40 percent chance of rain after 10am. Cloudy, with a high near 50. Calm wind.
Wednesday Night
Rain, mainly after 10pm. Low around 48. Chance of precipitation is 80%.
New Year's Day
Rain. High near 55. Chance of precipitation is 90%.
Thursday Night
Rain. Cloudy, with a low around 51.
Friday
Rain likely. Cloudy, with a high near 56.
Friday Night
Rain likely. Cloudy, with a low around 51.
Saturday
Rain likely. Cloudy, with a high near 53.
Saturday Night
Rain likely. Cloudy, with a low around 48.
Sunday
A chance of rain. Mostly cloudy, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ione CA
 38.34°N 120.94°W (Elev. 299 ft)
Last Update:
8:51 am PST Dec 29, 2025
Forecast Valid:
12pm PST Dec 29, 2025-6pm PST Jan 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation