Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Merced / Castle Air Force Base (KMER)

Lat: 37.36667°NLon: 120.56667°WElev: 187.0ft.

Mist

N/A

Humidity NA
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility 5.00 mi
Last update NA
Extended Forecast for

6 Miles W Merced CA

Dense Fog Advisory January 20, 09:00pm until January 21, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  • Tonight

    Tonight: Widespread dense fog between 10pm and 2am.  Otherwise, mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Dense Fog

  • Wednesday

    Wednesday: Areas of dense fog between 10am and noon.  Otherwise, cloudy, with a high near 57. Calm wind.

    High: 57 °F

    Areas Dense
    Fog then
    Cloudy

  • Wednesday Night

    Wednesday Night: Patchy dense fog before 8pm, then patchy dense fog after 9pm.  Otherwise, cloudy, with a low around 46. Calm wind becoming west northwest around 5 mph.

    Low: 46 °F

    Patchy Dense
    Fog

  • Thursday

    Thursday: Patchy dense fog before 11am.  Otherwise, mostly cloudy, with a high near 59. Calm wind becoming northwest around 5 mph.

    High: 59 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Patchy dense fog before 2am.  Otherwise, mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Dense
    Fog

  • Friday

    Friday: Partly sunny, with a high near 58. Calm wind becoming west northwest around 5 mph.

    High: 58 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. North northwest wind around 5 mph becoming calm.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 56. Northwest wind around 5 mph.

    High: 56 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Widespread dense fog between 10pm and 2am. Otherwise, mostly cloudy, with a low around 42. Calm wind.
Wednesday
Areas of dense fog between 10am and noon. Otherwise, cloudy, with a high near 57. Calm wind.
Wednesday Night
Patchy dense fog before 8pm, then patchy dense fog after 9pm. Otherwise, cloudy, with a low around 46. Calm wind becoming west northwest around 5 mph.
Thursday
Patchy dense fog before 11am. Otherwise, mostly cloudy, with a high near 59. Calm wind becoming northwest around 5 mph.
Thursday Night
Patchy dense fog before 2am. Otherwise, mostly cloudy, with a low around 44. Calm wind.
Friday
Partly sunny, with a high near 58. Calm wind becoming west northwest around 5 mph.
Friday Night
Partly cloudy, with a low around 42. North northwest wind around 5 mph becoming calm.
Saturday
Partly sunny, with a high near 56. Northwest wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 38. Calm wind.
Sunday
Partly sunny, with a high near 58. Calm wind.
Sunday Night
Mostly cloudy, with a low around 40. Calm wind.
Monday
Mostly cloudy, with a high near 58. Calm wind becoming south southwest around 5 mph.
Monday Night
Mostly cloudy, with a low around 39. Calm wind.
Tuesday
Partly sunny, with a high near 58. Calm wind becoming south around 5 mph.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles W Merced CA
 37.31°N 120.58°W (Elev. 148 ft)
6:57 pm PST Jan 20, 2026
7pm PST Jan 20, 2026-6pm PST Jan 27, 2026
 
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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