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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Eureka WFO (EKA01)

Lat: 40.8098°NLon: 124.1602°WElev: 20.0ft.

Rain

54°F

12°C

Humidity NA
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility 6.00 mi
Last update NA
Extended Forecast for

Arcata CA

  • This Afternoon

    This Afternoon: A 30 percent chance of rain. Patchy fog after 4pm. Otherwise, mostly cloudy, with a high near 58. Calm wind.

    High: 58 °F

    Chance Rain
    and Patchy
    Fog

  • Tonight

    Tonight: A slight chance of drizzle after 4am. Patchy fog before 7pm, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog
    then Slight
    Chance
    Drizzle and
    Patchy Fog

  • Monday

    Monday: A slight chance of drizzle before 10am. Patchy fog before 7am, then patchy fog after 4pm. Otherwise, partly sunny, with a high near 60. Calm wind.

    High: 60 °F

    Slight Chance
    Drizzle and
    Patchy Fog
    then Patchy
    Fog

  • Monday Night

    Monday Night: A slight chance of drizzle. Patchy fog before 7pm. Otherwise, mostly cloudy, with a low around 45. Light southeast wind.

    Low: 45 °F

    Slight Chance
    Drizzle and
    Patchy Fog

  • Tuesday

    Tuesday: A chance of drizzle, mainly after 10am. Partly sunny, with a high near 60. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 60 °F

    Chance
    Drizzle

  • Tuesday Night

    Tuesday Night: A chance of drizzle. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Chance
    Drizzle and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of drizzle, mainly before 10am. Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 60.

    High: 60 °F

    Chance
    Drizzle and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: A slight chance of drizzle before 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Drizzle and
    Patchy Fog
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of rain. Patchy fog after 4pm. Otherwise, mostly cloudy, with a high near 58. Calm wind.
Tonight
A slight chance of drizzle after 4am. Patchy fog before 7pm, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 45. Calm wind.
Monday
A slight chance of drizzle before 10am. Patchy fog before 7am, then patchy fog after 4pm. Otherwise, partly sunny, with a high near 60. Calm wind.
Monday Night
A slight chance of drizzle. Patchy fog before 7pm. Otherwise, mostly cloudy, with a low around 45. Light southeast wind.
Tuesday
A chance of drizzle, mainly after 10am. Partly sunny, with a high near 60. Calm wind becoming west southwest around 5 mph in the afternoon.
Tuesday Night
A chance of drizzle. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 48. Calm wind.
Wednesday
A chance of drizzle, mainly before 10am. Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 60.
Wednesday Night
A slight chance of drizzle before 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arcata CA
 40.87°N 124.07°W (Elev. 194 ft)
Last Update:
1:10 pm PST Dec 7, 2025
Forecast Valid:
2pm PST Dec 7, 2025-6pm PST Dec 13, 2025
 
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