Very Cold Temperatures from the Northern Plains to Ohio Valley; Swath of Snow from the Midwest to Central Appalachians

Arctic air will bring very cold temperatures and dangerous wind chills from the Northern Plains to the Ohio Valley today, expanding into the Mid-South and Mid-Atlantic on Sunday. A swath of accumulating snow is expected today from the Midwest to Central Appalachians, expanding into portions of the Mid-Atlantic tonight into Sunday. Read More >

Current conditions at

SIMS (SMSC1)

Lat: 41.0713°NLon: 122.36993°WElev: 2537.0ft.

NA

46°F

8°C

Humidity 64%
Wind Speed N 3 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 13 Dec 08:32 PM PST
Extended Forecast for

5 Miles SSW Dunsmuir CA

  • Tonight

    Tonight: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 66. Calm wind.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers after 10am.  Partly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly before 4am.  Patchy fog before 2am, then patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 47. Calm wind.  Chance of precipitation is 70%.

    Low: 47 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: Showers likely, mainly after 10am.  Patchy fog before 10am.  Otherwise, mostly cloudy, with a high near 57. Chance of precipitation is 70%.

    High: 57 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Showers.  Low around 43. Chance of precipitation is 90%.

    Low: 43 °F

    Showers

  • Wednesday

    Wednesday: Showers, mainly before 4pm.  Mostly cloudy, with a high near 53.

    High: 53 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 10pm.  Mostly cloudy, with a low around 40.

    Low: 40 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 41. Calm wind.
Sunday
Sunny, with a high near 66. Calm wind.
Sunday Night
Partly cloudy, with a low around 43. Calm wind.
Monday
A 30 percent chance of showers after 10am. Partly sunny, with a high near 58. Calm wind.
Monday Night
Showers likely, mainly before 4am. Patchy fog before 2am, then patchy fog after 3am. Otherwise, mostly cloudy, with a low around 47. Calm wind. Chance of precipitation is 70%.
Tuesday
Showers likely, mainly after 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 57. Chance of precipitation is 70%.
Tuesday Night
Showers. Low around 43. Chance of precipitation is 90%.
Wednesday
Showers, mainly before 4pm. Mostly cloudy, with a high near 53.
Wednesday Night
Showers likely, mainly after 10pm. Mostly cloudy, with a low around 40.
Thursday
Showers. Cloudy, with a high near 50.
Thursday Night
Showers. The rain could be heavy at times. Cloudy, with a low around 42.
Friday
Showers. The rain could be heavy at times. Cloudy, with a high near 50.
Friday Night
Showers likely. Mostly cloudy, with a low around 36.
Saturday
Showers likely. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Dunsmuir CA
 41.17°N 122.29°W (Elev. 2323 ft)
1:20 pm PST Dec 13, 2025
9pm PST Dec 13, 2025-6pm PST Dec 20, 2025
 
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Additional Resources

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Hourly Weather Forecast

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