
Critical Fire Weather in the High Plains; Heat Continues in the West
Critical fire weather conditions will persist in the central High Plains through Friday as gusty winds and dry conditions continue. The heat wave across the West and Southwest will continue to intensify through the week, with daily and monthly record highs expected to be broken. Read More >
Current conditions at
Sunnyside Municipal Airport (K1S5)
Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.
Clear
N/A
| Humidity | 87% |
| Wind Speed | N 0 MPH |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | 10.00 mi |
| Last update | 10 Mar 07:35 AM PDT |
Extended Forecast for
Prosser WA
Tonight

Low: 55 °F
Mostly Cloudy
Thursday

High: 76 °F
Mostly Cloudy
Thursday Night

Low: 53 °F
Mostly Cloudy
Friday

High: 74 °F
Mostly Cloudy
Friday Night

Low: 44 °F
Mostly Cloudy
Saturday

High: 60 °F
Mostly Sunny
Saturday Night

Low: 33 °F
Mostly Clear
Sunday

High: 59 °F
Sunny
Sunday Night

Low: 38 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 55. Southwest wind around 8 mph.
Thursday
Mostly cloudy, with a high near 76. Southwest wind 7 to 14 mph, with gusts as high as 21 mph.
Thursday Night
Mostly cloudy, with a low around 53. Southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Friday
Mostly cloudy, with a high near 74. Southwest wind 7 to 16 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around 44. West wind 8 to 16 mph, with gusts as high as 23 mph.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Sunny, with a high near 59.
Sunday Night
Mostly cloudy, with a low around 38.
Monday
Partly sunny, with a high near 59.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A chance of rain. Mostly cloudy, with a high near 59.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 39.
Wednesday
A chance of rain. Mostly sunny, with a high near 60.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Prosser WA
46.2°N 119.78°W (Elev. 646 ft)
46.2°N 119.78°W (Elev. 646 ft)
10:15 pm PDT Mar 18, 2026
11pm PDT Mar 18, 2026-6pm PDT Mar 25, 2026


