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Winter Weather in the Eastern U.S.; Fire Weather in the Southern High Plains

A wintry mix may impact travel across portions of the Ohio Valley, central Appalachians, Mid-Atlantic, and Northeast U.S. today through Tuesday. Gusty winds and low relative humidity will bring elevated to critical fire weather to northeastern New Mexico and southeastern Colorado today and Tuesday. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.

Clear

57°F

14°C

Humidity 47%
Wind Speed N 0 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 02 Mar 12:55 PM PST
Extended Forecast for

Prosser WA

  • This Afternoon

    This Afternoon: Sunny, with a high near 60. South wind around 6 mph.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 36. South wind 3 to 5 mph.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62. Light south wind becoming southwest 6 to 11 mph in the morning.

    High: 62 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 4am. Cloudy, with a low around 44. South wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday

    Wednesday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 58. West wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 36.

    Low: 36 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 60. South wind around 6 mph.
Tonight
Partly cloudy, with a low around 36. South wind 3 to 5 mph.
Tuesday
Mostly cloudy, with a high near 62. Light south wind becoming southwest 6 to 11 mph in the morning.
Tuesday Night
Rain likely, mainly after 4am. Cloudy, with a low around 44. South wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 58. West wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 36.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 59.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Mostly cloudy, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
Mostly cloudy, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
Last Update:
1:08 pm PST Mar 2, 2026
Forecast Valid:
1pm PST Mar 2, 2026-6pm PDT Mar 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation