National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

MANSON (MASW)

Lat: 47.91694°NLon: 120.12444°WElev: 1972.0ft.

NA

44°F

7°C

Humidity 79%
Wind Speed SE 2 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 08 Dec 10:00 AM PST
Extended Forecast for

13 Miles ESE Trinity WA

Flood Watch until December 9, 04:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until December 9, 04:00am

    NOW until 4:00am Tue

    Flood Watch

  • Today

    High: 38 °F

    Rain/Snow

  • Tonight

    Tonight: Rain and snow, becoming all snow after midnight. The rain and snow could be heavy at times. Low around 30. West wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 30 °F

    Rain/Snow
    then Heavy
    Snow

  • Tuesday

    Tuesday: Snow likely, mainly after 10am. Increasing clouds, with a high near 34. West wind 7 to 11 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    High: 34 °F

    Snow Likely

  • Tuesday Night

    Tuesday Night: Snow before 1am, then rain and snow. The rain and snow could be heavy at times. Low around 31. West wind around 7 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    Low: 31 °F

    Heavy Snow
    then
    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow. High near 37. West wind 9 to 11 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 37 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow. Low around 33. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 33 °F

    Rain/Snow

  • Thursday

    Thursday: Rain and snow likely. Mostly cloudy, with a high near 38. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Rain likely, possibly mixed with snow, mainly before 10pm. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain/Snow
    Likely

Detailed Forecast

Today
Rain, possibly mixed with snow, becoming all rain after 2pm. The rain could be heavy at times. High near 38. West wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Rain and snow, becoming all snow after midnight. The rain and snow could be heavy at times. Low around 30. West wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Snow likely, mainly after 10am. Increasing clouds, with a high near 34. West wind 7 to 11 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Snow before 1am, then rain and snow. The rain and snow could be heavy at times. Low around 31. West wind around 7 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Wednesday
Rain and snow. High near 37. West wind 9 to 11 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Rain and snow. Low around 33. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Thursday
Rain and snow likely. Mostly cloudy, with a high near 38. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Thursday Night
Rain likely, possibly mixed with snow, mainly before 10pm. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Friday
A chance of rain and snow before 10am, then a chance of rain. Partly sunny, with a high near 39. Chance of precipitation is 40%.
Friday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 33.
Saturday
Rain and snow likely. Partly sunny, with a high near 39. Chance of precipitation is 60%.
Saturday Night
Rain and snow likely. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 36. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles ESE Trinity WA
 48.01°N 120.56°W (Elev. 4557 ft)
Last Update:
9:23 am PST Dec 8, 2025
Forecast Valid:
11am PST Dec 8, 2025-6pm PST Dec 14, 2025
 
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