Above Average Temperatures for the West and Central Plains; Lake Effect Snow Continues

Well above average temperatures will prevail across the Plains and the West Coast this week, while a cold front will bring Arctic air to the South and East Coast Thursday and Friday. Lake effect snow is forecast downwind of the Great Lakes through Thursday along and behind the Arctic front, as well as mountain snow across the Southern Appalachians. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

31°F

-1°C

Humidity 97%
Wind Speed N 0 MPH
Barometer 30.53 in (1033.86 mb)
Dewpoint 30°F (-1°C)
Visibility 7.00 mi
Last update 14 Jan 03:35 AM PST
Extended Forecast for

Prosser WA

Air Stagnation Advisory January 14, 03:45am until January 16, 10:00am
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 14, 03:45am until January 16, 10:00am

    NOW until 10:00am Fri

    Air Stagnation Advisory

  • Overnight

    Low: 34 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 48. Light and variable wind.

    High: 48 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 10pm.  Otherwise, partly cloudy, with a low around 33. Light west wind.

    Low: 33 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 46. Light and variable wind becoming northeast around 5 mph in the afternoon.

    High: 46 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. Light north wind.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 34. Light west wind.
Wednesday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 48. Light and variable wind.
Wednesday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 33. Light west wind.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 46. Light and variable wind becoming northeast around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 30. Light north wind.
Friday
Mostly sunny, with a high near 43.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 26.
M.L.King Day
Partly sunny, with a high near 41.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.21°N 119.75°W (Elev. 741 ft)
3:42 am PST Jan 14, 2026
3am PST Jan 14, 2026-6pm PST Jan 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