Current conditions at
Sunnyside Municipal Airport (K1S5)
Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.
Clear
25°C
77°F
| Humidity | 44% |
| Wind Speed | N 0 MPH |
| Barometer | 29.99 in (1015.58 mb) |
| Dewpoint | 12°C (54°F) |
| Visibility | 16 km |
| Heat Index | 26°C (78°F) |
| Last update | 19 Aug 11:15 AM PDT |
Extended Forecast for
Prosser WA
Today
High: 34 °C
Becoming
SunnyTonight
Low: 14 °C
Mostly Clear
Thursday
High: 36 °C
Sunny
Thursday Night
Low: 16 °C
Partly Cloudy
Friday
High: 35 °C
Partly Sunny
Friday Night
Low: 17 °C
Slight Chance
ShowersSaturday
High: 33 °C
Mostly Sunny
Saturday Night
Low: 12 °C
Mostly Clear
Sunday
High: 30 °C
Sunny
Detailed Forecast
Today
Partly sunny early, then becoming sunny, with a high near 34. Calm wind.
Tonight
Mostly clear, with a low around 14. Calm wind.
Thursday
Sunny, with a high near 36. Calm wind.
Thursday Night
Partly cloudy, with a low around 16. Calm wind.
Friday
Partly sunny, with a high near 35. Calm wind.
Friday Night
A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 17.
Saturday
Mostly sunny, with a high near 33.
Saturday Night
Mostly clear, with a low around 12.
Sunday
Sunny, with a high near 30.
Sunday Night
Mostly clear, with a low around 12.
Monday
Sunny, with a high near 32.
Monday Night
Mostly clear, with a low around 14.
Tuesday
Sunny, with a high near 32.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Prosser WA
46.22°N 119.79°W (Elev. 715 m)
46.22°N 119.79°W (Elev. 715 m)
10:01 am PDT Aug 19, 2026
11am PDT Aug 19, 2026-6pm PDT Aug 25, 2026
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