Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

91°F

33°C

Humidity 39%
Wind Speed N 0 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 18 Aug 03:15 PM PDT
Extended Forecast for

19 Miles ESE Mattawa WA

  • Tonight

    Tonight: Patchy smoke between 8pm and 11pm. Mostly clear, with a low around 62. Northwest wind 5 to 14 mph becoming southwest after midnight. Winds could gust as high as 23 mph.

    Low: 62 °F

    Patchy Smoke
    then Mostly
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Light and variable wind becoming southeast around 6 mph in the afternoon.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Patchy smoke after 11pm. Mostly clear, with a low around 61. Southeast wind around 5 mph becoming northwest after midnight.

    Low: 61 °F

    Patchy Smoke

  • Thursday

    Thursday: Sunny, with a high near 97. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 65. East wind around 5 mph becoming light and variable.

    Low: 65 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 96.

    High: 96 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers before 11am.  Sunny, with a high near 92.

    High: 92 °F

    Slight Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy smoke between 8pm and 11pm. Mostly clear, with a low around 62. Northwest wind 5 to 14 mph becoming southwest after midnight. Winds could gust as high as 23 mph.
Wednesday
Sunny, with a high near 93. Light and variable wind becoming southeast around 6 mph in the afternoon.
Wednesday Night
Patchy smoke after 11pm. Mostly clear, with a low around 61. Southeast wind around 5 mph becoming northwest after midnight.
Thursday
Sunny, with a high near 97. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 65. East wind around 5 mph becoming light and variable.
Friday
Partly sunny, with a high near 96.
Friday Night
Mostly cloudy, with a low around 64.
Saturday
A 20 percent chance of showers before 11am. Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 58.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Mostly sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles ESE Mattawa WA
 46.59°N 119.58°W (Elev. 600 ft)
3:01 pm PDT Aug 18, 2026
3pm PDT Aug 18, 2026-6pm PDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database