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

Portland, Portland-Troutdale Airport (KTTD)

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

Partly Cloudy

46°F

8°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.27 in (1025.06 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 18 May 04:00 AM PDT
Extended Forecast for

Troutdale OR

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 70. Light and variable wind becoming northwest 6 to 11 mph in the afternoon.

    High: 70 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 45. Northwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 45 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 70. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 70 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50. Northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. Calm wind becoming northwest 5 to 9 mph in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. Breezy.

    Low: 52 °F

    Mostly Clear
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 70. Light and variable wind becoming northwest 6 to 11 mph in the afternoon.
Tonight
Increasing clouds, with a low around 45. Northwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Tuesday
Partly sunny, with a high near 70. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 50. Northwest wind 5 to 10 mph becoming light north after midnight.
Wednesday
Mostly sunny, with a high near 74. Calm wind becoming northwest 5 to 9 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 52. Breezy.
Friday
Mostly sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 51.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 50. Breezy.
Sunday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Troutdale OR
 45.54°N 122.4°W (Elev. 102 ft)
Last Update:
3:42 am PDT May 18, 2026
Forecast Valid:
4am PDT May 18, 2026-6pm PDT May 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation