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City of Prosser, WAProsser, WA Weather Forecast
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| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | THURSDAY |
 |  | |  | | |  | | | |
| Sunny | Partly Cloudy | Sunny | Clear | Sunny | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear |
| Hi: 80°FHi: 27°C | Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C | Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C Lo: 46°FLo: 8°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 401 AM PDT Fri Oct 02 2026 
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Issued: 518 AM PDT Fri Oct 2 2026
Key Messages
- Dry conditions and light winds though the weekend.
- Warmer than normal Sunday and Monday
- Breezy winds return to the Columbia River Gorge by Monday
Discussion
...
Zonal flow aloft transitions to more of a broad upper ridging pattern over the next 36-48 hours over the PAC/Interior NW region. An initial cold frontal passage will keep temperature steady to slightly cooler Saturday, but noticeably warmer by Sunday and Monday. Already Today, highs should reach the low to mid 80s across the Joh...