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

Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

BLACK ROCK (OKFO3)

Lat: 43.52828°NLon: 121.816°WElev: 4891.0ft.

NA

44°F

7°C

Humidity 92%
Wind Speed WSW 2 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 10 Apr 05:15 PM PDT
Extended Forecast for

Cascade Summit OR

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. Steady temperature around 51. Light west wind. Chance of precipitation is 90%.

    High: 51 °F

    Showers

  • Tonight

    Tonight: Rain and possibly a thunderstorm. Snow level 7800 feet lowering to 6400 feet after midnight . Low around 37. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 37 °F

    Rain

  • Saturday

    Saturday: Rain and snow showers. Some thunder is also possible. Snow level 6000 feet rising to 6700 feet in the afternoon. High near 48. Light south wind. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 48 °F

    Rain/Snow
    Likely then
    Rain/Snow

  • Saturday Night

    Saturday Night: Rain and snow before 2am, then a chance of rain between 2am and 5am, then a chance of rain and snow after 5am. Snow level 6400 feet lowering to 5600 feet after midnight . Low around 34. Calm wind. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow
    then Chance
    Rain/Snow

  • Sunday

    Sunday: Rain, possibly mixed with snow. Snow level 5400 feet. High near 41. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow, becoming all snow after 11pm. Low around 31. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain/Snow
    then Snow

  • Monday

    Monday: Snow before 5pm, then snow, possibly mixed with rain. High near 39. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Snow then
    Rain/Snow

  • Monday Night

    Monday Night: Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 29.

    Low: 29 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Tuesday

    Tuesday: A chance of snow before 2pm, then rain likely. Partly sunny, with a high near 44.

    High: 44 °F

    Chance Snow
    then
    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Steady temperature around 51. Light west wind. Chance of precipitation is 90%.
Tonight
Rain and possibly a thunderstorm. Snow level 7800 feet lowering to 6400 feet after midnight . Low around 37. Calm wind. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain and snow showers. Some thunder is also possible. Snow level 6000 feet rising to 6700 feet in the afternoon. High near 48. Light south wind. Chance of precipitation is 100%. Little or no snow accumulation expected.
Saturday Night
Rain and snow before 2am, then a chance of rain between 2am and 5am, then a chance of rain and snow after 5am. Snow level 6400 feet lowering to 5600 feet after midnight . Low around 34. Calm wind. Chance of precipitation is 100%. Little or no snow accumulation expected.
Sunday
Rain, possibly mixed with snow. Snow level 5400 feet. High near 41. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 100%. Little or no snow accumulation expected.
Sunday Night
Rain and snow, becoming all snow after 11pm. Low around 31. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Monday
Snow before 5pm, then snow, possibly mixed with rain. High near 39. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday Night
Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 29.
Tuesday
A chance of snow before 2pm, then rain likely. Partly sunny, with a high near 44.
Tuesday Night
Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 31.
Wednesday
Snow. Cloudy, with a high near 37.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 23.
Thursday
A chance of snow. Partly sunny, with a high near 40.
Thursday Night
A chance of snow. Partly cloudy, with a low around 24.
Friday
A chance of rain and snow. Mostly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cascade Summit OR
 43.58°N 122.05°W (Elev. 5030 ft)
Last Update:
4:41 pm PDT Apr 10, 2026
Forecast Valid:
5pm PDT Apr 10, 2026-6pm PDT Apr 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation