National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
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 clear, with a low around 45. Northeast wind around 7 mph becoming northwest in the evening.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 73. Northwest wind around 7 mph.

    High: 73 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 50. West wind around 7 mph.

    Low: 50 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain, mainly between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 73. Light and variable wind becoming south 5 to 8 mph in the afternoon. Chance of precipitation is 30%.

    High: 73 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 47. West wind around 8 mph.

    Low: 47 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 45. Northeast wind around 7 mph becoming northwest in the evening.
Friday
Increasing clouds, with a high near 73. Northwest wind around 7 mph.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 50. West wind around 7 mph.
Saturday
A chance of rain, mainly between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 73. Light and variable wind becoming south 5 to 8 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 47. West wind around 8 mph.
Sunday
Partly sunny, with a high near 73.
Sunday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 64.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 42.
Wednesday
A slight chance of rain. Partly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SE Mattawa WA
 46.64°N 119.74°W (Elev. 400 ft)
Last Update:
3:01 pm PDT Apr 9, 2026
Forecast Valid:
7pm PDT Apr 9, 2026-6pm PDT Apr 16, 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