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Hazardous Weather Conditions
Current conditions at
Sunnyside Municipal Airport (K1S5)
Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.
Clear
89°F
32°C
| Humidity | 20% |
| Wind Speed | W 16 MPH |
| Barometer | 29.82 in (1009.82 mb) |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 26 Aug 06:15 PM PDT |
Extended Forecast for
Prosser WA
Tonight

Low: 59 °F
Patchy Smoke
Thursday

High: 88 °F
Becoming
SunnyThursday Night

Low: 50 °F
Mostly Clear
Friday

High: 85 °F
Sunny
Friday Night

Low: 51 °F
Mostly Clear
Saturday

High: 80 °F
Sunny
Saturday Night

Low: 45 °F
Mostly Clear
Sunday

High: 80 °F
Sunny
Sunday Night

Low: 49 °F
Mostly Clear
Detailed Forecast
Tonight
Patchy smoke. Increasing clouds, with a low around 59. West wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 88. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Thursday Night
Mostly clear, with a low around 50. West wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 21 mph.
Friday
Sunny, with a high near 85. Calm wind.
Friday Night
Mostly clear, with a low around 51. West wind 3 to 7 mph.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Mostly sunny, with a high near 79.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Prosser WA
46.21°N 119.75°W (Elev. 741 ft)
46.21°N 119.75°W (Elev. 741 ft)
3:00 pm PDT Aug 26, 2026
6pm PDT Aug 26, 2026-6pm PDT Sep 2, 2026



