Autumn Temperatures for Eastern Third of the Country; Developing Offshore Coastal Storm

Cooler and less humid conditions for most of the eastern third of the nation as high pressure dominates the weather pattern. Otherwise, rather tranquil weather for most of the nation for the end of the weekend into the start of this week. We continue to monitor a developing coastal storm offshore of the Carolinas; Coastal flooding and beach erosion possible along portions of the Mid-Atlantic. Read More >

Current conditions at

Portland, Portland-Troutdale Airport (KTTD)

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

Fog

45°F

7°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 45°F (7°C)
Visibility 0.24 mi
Last update 18 Oct 08:35 AM PDT
Extended Forecast for

Happy Valley OR

  • Today

    Today: Mostly sunny, with a high near 64. North wind 3 to 5 mph.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 45. Light and variable wind.

    Low: 45 °F

    Increasing
    Clouds

  • Monday

    Monday: Cloudy, with a high near 61. Light and variable wind.

    High: 61 °F

    Cloudy

  • Monday Night

    Monday Night: Cloudy, then gradually becoming partly cloudy, with a low around 43. Light north wind.

    Low: 43 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69. North northeast wind 5 to 7 mph.

    High: 69 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 64. North wind 3 to 5 mph.
Tonight
Increasing clouds, with a low around 45. Light and variable wind.
Monday
Cloudy, with a high near 61. Light and variable wind.
Monday Night
Cloudy, then gradually becoming partly cloudy, with a low around 43. Light north wind.
Tuesday
Mostly sunny, with a high near 69. North northeast wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 43.
Friday
A chance of rain. Partly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 40.
Saturday
A slight chance of rain. Partly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Happy Valley OR
 45.44°N 122.52°W (Elev. 600 ft)
8:41 am PDT Oct 18, 2026
8am PDT Oct 18, 2026-6pm PDT Oct 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database