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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Current conditions at

Portland, Portland-Troutdale Airport (KTTD)

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

Clear

63°F

17°C

Humidity 51%
Wind Speed NNW 4 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 17 Oct 06:00 PM PDT
Extended Forecast for

Happy Valley OR

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 42. Light north northwest wind.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Increasing clouds, with a high near 66. Calm wind becoming north around 5 mph in the afternoon.

    High: 66 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 62. Calm wind.

    High: 62 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 69.

    High: 69 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 42. Light north northwest wind.
Sunday
Increasing clouds, with a high near 66. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Cloudy, with a low around 45. Light and variable wind.
Monday
Mostly cloudy, with a high near 62. Calm wind.
Monday Night
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 41. Calm wind.
Tuesday
Patchy fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 44.
Friday
A chance of rain. Partly sunny, with a high near 61.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
A slight chance of rain. Partly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Happy Valley OR
 45.42°N 122.51°W (Elev. 289 ft)
Last Update:
5:41 pm PDT Oct 17, 2026
Forecast Valid:
6pm PDT Oct 17, 2026-6pm PDT Oct 24, 2026
 
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