Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.

Clear

23°F

-5°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 10 Mar 07:35 AM PDT
Extended Forecast for

11 Miles SSW Mattawa WA

  • Today

    Today: Rain.  High near 43. West wind 7 to 9 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Rain

  • Tonight

    Tonight: Rain likely before 11pm, then a chance of rain and snow between 11pm and 2am, then a slight chance of snow after 2am.  Snow level 5200 feet lowering to 3100 feet after midnight . Cloudy, then gradual clearing toward daybreak, with a low around 31. Northwest wind 10 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 31 °F

    Rain/Snow
    Likely

  • Saturday

    Saturday: Sunny, with a high near 39. Breezy, with a northwest wind 22 to 29 mph, with gusts as high as 43 mph.

    High: 39 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29. Blustery, with a northwest wind 23 to 28 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 39 mph.

    Low: 29 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 41. West wind 6 to 8 mph becoming south in the morning.

    High: 41 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A slight chance of snow, mixing with rain after 8pm, then gradually ending.  Snow level rising to 6400 feet after midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain.  Mostly cloudy, with a high near 60.

    High: 60 °F

    Slight Chance
    Rain

Detailed Forecast

Today
Rain. High near 43. West wind 7 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain likely before 11pm, then a chance of rain and snow between 11pm and 2am, then a slight chance of snow after 2am. Snow level 5200 feet lowering to 3100 feet after midnight . Cloudy, then gradual clearing toward daybreak, with a low around 31. Northwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday
Sunny, with a high near 39. Breezy, with a northwest wind 22 to 29 mph, with gusts as high as 43 mph.
Saturday Night
Mostly cloudy, with a low around 29. Blustery, with a northwest wind 23 to 28 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 39 mph.
Sunday
Mostly cloudy, with a high near 41. West wind 6 to 8 mph becoming south in the morning.
Sunday Night
A slight chance of snow, mixing with rain after 8pm, then gradually ending. Snow level rising to 6400 feet after midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 20%.
Monday
Mostly cloudy, with a high near 56.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A 20 percent chance of rain. Mostly cloudy, with a high near 60.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 47.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 61.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 50. Breezy.
Thursday
A slight chance of rain. Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
5:45 am PDT Mar 13, 2026
7am PDT Mar 13, 2026-6pm PDT Mar 19, 2026
 
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Additional Resources

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