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

Want to revisit 2025? Here's our year-end climate summary!

Our annual climate summary for Portland has been posted. Additional summaries for Astoria, Eugene, and Salem are available. For other climate summaries, visit our Observed Weather tab on our climate page. Read More >

Current conditions at

I84 WB at Cascade Locks MP44.57 (ODT78)

Lat: 45.66931°NLon: 121.88484°WElev: 194.0ft.

NA

37°F

3°C

Humidity 54%
Wind Speed E 8 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Wind Chill31°F (-1°C)
Last update 25 Jan 12:18 PM PST
Extended Forecast for

5 Miles S Cascade Locks OR

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 38. Northeast wind around 5 mph becoming calm.

    High: 38 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 31. Calm wind.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 45. Calm wind.

    High: 45 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Widespread frost, mainly after 3am. Otherwise, mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Frost

  • Tuesday

    Tuesday: Widespread frost before 10am. Otherwise, partly sunny, with a high near 39. East wind 3 to 5 mph.

    High: 39 °F

    Frost then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 4am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.

    High: 46 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 10pm. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely. Mostly cloudy, with a high near 45.

    High: 45 °F

    Rain Likely

Detailed Forecast

This Afternoon
Partly sunny, with a high near 38. Northeast wind around 5 mph becoming calm.
Tonight
Mostly cloudy, with a steady temperature around 31. Calm wind.
Monday
Mostly sunny, with a high near 45. Calm wind.
Monday Night
Widespread frost, mainly after 3am. Otherwise, mostly cloudy, with a low around 32. Calm wind.
Tuesday
Widespread frost before 10am. Otherwise, partly sunny, with a high near 39. East wind 3 to 5 mph.
Tuesday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Wednesday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.
Wednesday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 38.
Thursday
Rain likely. Mostly cloudy, with a high near 45.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 40.
Friday
Rain likely. Mostly cloudy, with a high near 50.
Friday Night
A chance of rain. Mostly cloudy, with a low around 42.
Saturday
A chance of rain. Mostly cloudy, with a high near 50.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Cascade Locks OR
 45.62°N 121.89°W (Elev. 833 ft)
Last Update:
12:06 pm PST Jan 25, 2026
Forecast Valid:
12pm PST Jan 25, 2026-6pm PST Jan 31, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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