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

45°F

7°C

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

Newhalem WA

Flood Watch March 20, 05:42am until March 20, 05:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch March 20, 05:42am until March 20, 05:00pm

    NOW until 5:00pm Fri

    Flood Watch

  • Overnight

    Low: 48 °F

    Rain

  • Friday

    Friday: Rain. High near 52. South southwest wind 5 to 7 mph becoming east northeast in the morning. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 52 °F

    Rain

  • Friday Night

    Friday Night: Rain likely before 11pm, then a chance of showers after 4am. Mostly cloudy, with a low around 38. Southwest wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain Likely

  • Saturday

    Saturday: Rain showers likely before 11am, then a chance of rain and snow showers between 11am and 2pm, then a chance of rain showers after 2pm. Partly sunny, with a high near 46. West southwest wind 5 to 8 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 46 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of rain showers before 8pm, then snow showers likely, possibly mixed with rain. Mostly cloudy, with a low around 33. Southwest wind 3 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow
    Likely

  • Sunday

    Sunday: Rain likely, possibly mixed with snow, becoming all rain after 11am. Mostly cloudy, with a high near 47. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 47 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

  • Monday

    Monday: A slight chance of rain before 11am. Partly sunny, with a high near 54.

    High: 54 °F

    Slight Chance
    Rain then
    Partly Sunny

Detailed Forecast

Overnight
Rain. Low around 48. South southwest wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 52. South southwest wind 5 to 7 mph becoming east northeast in the morning. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Friday Night
Rain likely before 11pm, then a chance of showers after 4am. Mostly cloudy, with a low around 38. Southwest wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain showers likely before 11am, then a chance of rain and snow showers between 11am and 2pm, then a chance of rain showers after 2pm. Partly sunny, with a high near 46. West southwest wind 5 to 8 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday Night
A slight chance of rain showers before 8pm, then snow showers likely, possibly mixed with rain. Mostly cloudy, with a low around 33. Southwest wind 3 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday
Rain likely, possibly mixed with snow, becoming all rain after 11am. Mostly cloudy, with a high near 47. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Sunday Night
A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 34.
Monday
A slight chance of rain before 11am. Partly sunny, with a high near 54.
Monday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 40.
Tuesday
Rain. Cloudy, with a high near 50.
Tuesday Night
Rain. Cloudy, with a low around 37.
Wednesday
Rain and snow. Cloudy, with a high near 45.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 32.
Thursday
A chance of rain and snow. Partly sunny, with a high near 48.
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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:
1:53 am PDT Mar 20, 2026
Forecast Valid:
5am PDT Mar 20, 2026-6pm PDT Mar 26, 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