Current conditions at
Sunnyside Municipal Airport (K1S5)
Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.
Clear
77°F
25°C
| Humidity | 34% |
| Wind Speed | N 0 MPH |
| Barometer | 30.23 in (1023.71 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 10.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 08 Sep 02:35 PM PDT |
Extended Forecast for
Prosser WA
This Afternoon
High: 79 °F
Sunny
Tonight
Low: 50 °F
Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 52 °F
Increasing
CloudsThursday
High: 85 °F
Mostly Sunny
Thursday Night
Low: 48 °F
Mostly Clear
Friday
High: 74 °F
Sunny
Friday Night
Low: 48 °F
Mostly Cloudy
Saturday
High: 73 °F
Chance
Showers
Detailed Forecast
This Afternoon
Sunny, with a high near 79. Calm wind.
Tonight
Clear, with a low around 50. Calm wind.
Wednesday
Sunny, with a high near 85. Calm wind.
Wednesday Night
Increasing clouds, with a low around 52. Calm wind.
Thursday
Mostly sunny, with a high near 85. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 74.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
A 30 percent chance of showers after 11am. Partly sunny, with a high near 73.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 47.
Sunday
A slight chance of showers. Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 75.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Prosser WA
46.22°N 119.79°W (Elev. 715 ft)
46.22°N 119.79°W (Elev. 715 ft)
11:46 am PDT Sep 8, 2026
2pm PDT Sep 8, 2026-6pm PDT Sep 14, 2026
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