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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

MARTEN RIDGE (MRTW1)

Lat: 48.76292°NLon: 121.69823°WElev: 3520.0ft.

NA

32°F

0°C

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

Newhalem WA

  • Today

    Today: A slight chance of rain and snow before 2pm, then a slight chance of rain after 4pm. Mostly sunny, with a high near 46. Southwest wind around 6 mph. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Tonight

    Tonight: A chance of rain and snow, mainly after 4am. Increasing clouds, with a low around 33. Light south southwest wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Mostly Clear
    then Chance
    Rain/Snow

  • Sunday

    Sunday: Rain and snow likely before 11am, then a chance of rain. Mostly cloudy, with a high near 47. West southwest wind 3 to 6 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 47 °F

    Rain/Snow
    Likely then
    Chance Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33. West southwest wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 53. Light and variable wind.

    High: 53 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of rain after 11pm. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain. High near 50. Chance of precipitation is 100%.

    High: 50 °F

    Rain

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 11pm, then rain after 11pm. Cloudy, with a low around 37.

    Low: 37 °F

    Showers

  • Wednesday

    Wednesday: Rain. Cloudy, with a high near 48.

    High: 48 °F

    Rain

Detailed Forecast

Today
A slight chance of rain and snow before 2pm, then a slight chance of rain after 4pm. Mostly sunny, with a high near 46. Southwest wind around 6 mph. Chance of precipitation is 20%.
Tonight
A chance of rain and snow, mainly after 4am. Increasing clouds, with a low around 33. Light south southwest wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Sunday
Rain and snow likely before 11am, then a chance of rain. Mostly cloudy, with a high near 47. West southwest wind 3 to 6 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around 33. West southwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 53. Light and variable wind.
Monday Night
A 50 percent chance of rain after 11pm. Mostly cloudy, with a low around 40.
Tuesday
Rain. High near 50. Chance of precipitation is 100%.
Tuesday Night
Showers and possibly a thunderstorm before 11pm, then rain after 11pm. Cloudy, with a low around 37.
Wednesday
Rain. Cloudy, with a high near 48.
Wednesday Night
Rain before 8pm, then rain and snow. Mostly cloudy, with a low around 33.
Thursday
Rain and snow likely. Mostly cloudy, with a high near 46.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 31.
Friday
A chance of rain and snow. Partly sunny, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newhalem WA
 48.66°N 121.27°W (Elev. 853 ft)
Last Update:
11:27 pm PDT Mar 20, 2026
Forecast Valid:
10am PDT Mar 21, 2026-6pm PDT Mar 27, 2026
 
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