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

Arctic Front Brings Winter Weather and Colder Temperatures to the Eastern U.S.

A series of cold fronts will bring heavy lake effect snow to the northern Great Lakes. The fronts will merge over the Ohio Valley and bring colder temperatures east of the Mississippi River later today into the end of the week. Additionally, wintry weather will develop over the Ohio Valley, Appalachians, and Northeast as rain switches over to snow tonight into Thursday morning. Read More >

Hazardous Weather Conditions

Current conditions at

ILLINOIS VALLEY AIRPORT (SBFO3)

Lat: 42.10375°NLon: 123.68508°WElev: 1389.0ft.

NA

38°F

3°C

Humidity 95%
Wind Speed NNE 2 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 14 Jan 03:52 PM PST
Extended Forecast for

9 Miles ENE Happy Camp CA

Freezing Fog Advisory January 14, 10:00pm until January 15, 12:00pm
Click here for hazard details and duration
Freezing Fog Advisory

  • Tonight

    Tonight: Patchy fog after 7pm. Otherwise, clear, with a low around 36. East northeast wind around 9 mph.

    Low: 36 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy dense fog before 1pm. Otherwise, sunny, with a high near 58. East northeast wind around 10 mph.

    High: 58 °F

    Patchy Dense
    Fog

  • Thursday Night

    Thursday Night: Patchy fog after 7pm. Otherwise, clear, with a low around 36. East wind around 8 mph.

    Low: 36 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, sunny, with a high near 57. East northeast wind around 8 mph.

    High: 57 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 10pm. Otherwise, clear, with a low around 35. Calm wind.

    Low: 35 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, sunny, with a high near 59.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 38.

    Low: 38 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, sunny, with a high near 55.

    High: 55 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog. Otherwise, clear, with a low around 34.

    Low: 34 °F

    Patchy Fog

Detailed Forecast

Tonight
Patchy fog after 7pm. Otherwise, clear, with a low around 36. East northeast wind around 9 mph.
Thursday
Patchy dense fog before 1pm. Otherwise, sunny, with a high near 58. East northeast wind around 10 mph.
Thursday Night
Patchy fog after 7pm. Otherwise, clear, with a low around 36. East wind around 8 mph.
Friday
Patchy fog before 10am. Otherwise, sunny, with a high near 57. East northeast wind around 8 mph.
Friday Night
Patchy fog after 10pm. Otherwise, clear, with a low around 35. Calm wind.
Saturday
Patchy fog before 10am. Otherwise, sunny, with a high near 59.
Saturday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 38.
Sunday
Patchy fog before 10am. Otherwise, sunny, with a high near 55.
Sunday Night
Patchy fog. Otherwise, clear, with a low around 34.
M.L.King Day
Patchy fog before 10am. Otherwise, sunny, with a high near 55.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 33.
Tuesday
Patchy fog. Otherwise, sunny, with a high near 54.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 39.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Happy Camp CA
 41.84°N 123.19°W (Elev. 1421 ft)
Last Update:
3:41 pm PST Jan 14, 2026
Forecast Valid:
4pm PST Jan 14, 2026-6pm PST Jan 21, 2026
 
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Additional Resources

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Chance of Precipitation