Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. 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

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 50. West wind around 15 mph, with gusts as high as 25 mph.

    High: 50 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light west  after midnight. Winds could gust as high as 20 mph.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 50. Light and variable wind.

    High: 50 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 11pm.  Cloudy, with a low around 38. Light south wind.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 66. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 66 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 71.

    High: 71 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Slight Chance
    Rain then
    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 70.

    High: 70 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 50. West wind around 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Sunday
Increasing clouds, with a high near 50. Light and variable wind.
Sunday Night
A 20 percent chance of rain before 11pm. Cloudy, with a low around 38. Light south wind.
Monday
Mostly cloudy, with a high near 66. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
Mostly cloudy, with a high near 71.
Tuesday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 49.
Wednesday
Mostly cloudy, with a high near 70.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
Mostly cloudy, with a high near 73.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
Partly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.22°N 119.79°W (Elev. 715 ft)
10:50 am PDT Mar 14, 2026
1pm PDT Mar 14, 2026-6pm PDT Mar 20, 2026
 
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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