Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Portland, Portland-Troutdale Airport (KTTD)

Lat: 45.55111°NLon: 122.40889°WElev: 36.0ft.

rain,mist

52°F

11°C

Humidity 93%
Wind Speed W 6 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 50°F (10°C)
Visibility 4.00 mi
Last update 09 Dec 03:00 AM PST
Extended Forecast for

2 Miles S Gresham OR

Flood Watch December 9, 03:19am until December 12, 04:00am
Flood Advisory until December 9, 10:00am
Wind Advisory December 9, 03:19am until December 9, 04:00am
Click here for hazard details and duration
Flood Watch
Flood Advisory
Wind Advisory
  •  
    Flood Watch December 9, 03:19am until December 12, 04:00am
    Flood Advisory until December 9, 10:00am
    Wind Advisory December 9, 03:19am until December 9, 04:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 51 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain.  High near 55. North wind 8 to 11 mph becoming south in the afternoon. Winds could gust as high as 21 mph.  Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 55 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 51. Windy, with a south southwest wind 22 to 24 mph, with gusts as high as 39 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 51 °F

    Rain and
    Windy

  • Wednesday

    Wednesday: Rain, mainly after 10am.  High near 56. Windy, with a south southwest wind 18 to 23 mph, with gusts as high as 37 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Rain and
    Windy

  • Wednesday Night

    Wednesday Night: Rain.  Low around 52. Breezy, with a south southwest wind around 18 mph, with gusts as high as 31 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain, mainly before 4pm.  High near 55. Breezy.  Chance of precipitation is 80%.

    High: 55 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: A 40 percent chance of rain before 10pm.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday

    Friday: A slight chance of rain.  Mostly cloudy, with a high near 56.

    High: 56 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
Rain. Steady temperature around 51. Breezy, with a west southwest wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain. High near 55. North wind 8 to 11 mph becoming south in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Tuesday Night
Rain. Low around 51. Windy, with a south southwest wind 22 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain, mainly after 10am. High near 56. Windy, with a south southwest wind 18 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 52. Breezy, with a south southwest wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain, mainly before 4pm. High near 55. Breezy. Chance of precipitation is 80%.
Thursday Night
A 40 percent chance of rain before 10pm. Mostly cloudy, with a low around 49.
Friday
A slight chance of rain. Mostly cloudy, with a high near 56.
Friday Night
Mostly cloudy, with a low around 45.
Saturday
A chance of rain, mainly after 4pm. Partly sunny, with a high near 54.
Saturday Night
Rain likely. Mostly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 52.
Sunday Night
Rain likely. Mostly cloudy, with a low around 46.
Monday
Rain. Cloudy, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Gresham OR
 45.47°N 122.44°W (Elev. 797 ft)
3:10 am PST Dec 9, 2025
3am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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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