Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

N/A

Humidity 87%
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 10 Mar 07:35 AM PDT
Extended Forecast for

11 Miles SE Mattawa WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. Northwest wind 6 to 11 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 52. Calm wind becoming east around 5 mph in the afternoon.

    High: 52 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 38. East wind around 5 mph becoming light and variable  in the evening.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 67. Light and variable wind becoming south 5 to 7 mph in the afternoon.

    High: 67 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 48. Southwest wind around 9 mph.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 71.

    High: 71 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 72.

    High: 72 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 31. Northwest wind 6 to 11 mph, with gusts as high as 22 mph.
Sunday
Increasing clouds, with a high near 52. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 38. East wind around 5 mph becoming light and variable in the evening.
Monday
Partly sunny, with a high near 67. Light and variable wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 48. Southwest wind around 9 mph.
Tuesday
Mostly cloudy, with a high near 71.
Tuesday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 50.
Wednesday
Mostly cloudy, with a high near 72.
Wednesday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 51.
Thursday
Partly sunny, with a high near 75.
Thursday Night
Mostly cloudy, with a low around 53.
Friday
Partly sunny, with a high near 77.
Friday Night
Mostly cloudy, with a low around 50.
Saturday
Mostly cloudy, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SE Mattawa WA
 46.64°N 119.74°W (Elev. 400 ft)
4:45 pm PDT Mar 14, 2026
9pm PDT Mar 14, 2026-6pm PDT Mar 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database