Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

BLACK ROCK (OKFO3)

Lat: 43.52831°NLon: 121.81601°WElev: 4891.0ft.

NA

34°F

1°C

Humidity 48%
Wind Speed NNE 2 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Last update 20 Jan 03:15 AM PST
Extended Forecast for

Cascade Summit OR

  • Today

    Today: Mostly sunny, with a high near 48. Light southeast wind.

    High: 48 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 31. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 31 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 44. Calm wind.

    High: 44 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog before 11pm.  Otherwise, partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Patchy Fog
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 43. Light west wind.

    High: 43 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 48. Light southeast wind.
Tonight
Partly cloudy, with a low around 31. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 44. Calm wind.
Wednesday Night
Patchy fog before 11pm. Otherwise, partly cloudy, with a low around 31. Calm wind.
Thursday
Mostly sunny, with a high near 43. Light west wind.
Thursday Night
Mostly clear, with a low around 24.
Friday
Sunny, with a high near 40.
Friday Night
Mostly clear, with a low around 20.
Saturday
Sunny, with a high near 43.
Saturday Night
A slight chance of snow after 10pm. Partly cloudy, with a low around 27.
Sunday
A chance of rain and snow. Partly sunny, with a high near 43.
Sunday Night
A chance of rain and snow. Snow level 5100 feet. Mostly cloudy, with a low around 30.
Monday
A chance of rain and snow. Snow level rising to 5500 feet in the afternoon. Mostly sunny, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
Cascade Summit OR
 43.58°N 122.05°W (Elev. 5030 ft)
3:41 am PST Jan 20, 2026
4am PST Jan 20, 2026-6pm PST Jan 26, 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