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

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Current conditions at

Portland, Portland International Airport (KPDX)

Lat: 45.59578°NLon: 122.60917°WElev: 20.0ft.

Partly Cloudy

63°F

17°C

Humidity 48%
Wind Speed NE 4 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 18 Mar 12:30 PM PDT
Extended Forecast for

Portland OR

  • This Afternoon

    This Afternoon: A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 68. South southwest wind around 6 mph.

    High: 68 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A slight chance of rain before 3am, then a slight chance of rain after 5am. Mostly cloudy, with a low around 50. South wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A 30 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 66. South wind 3 to 6 mph.

    High: 66 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 54. South wind 3 to 6 mph.

    Low: 54 °F

    Chance Rain

  • Friday

    Friday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 61. South wind 5 to 7 mph. Chance of precipitation is 70%.

    High: 61 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.

    Low: 41 °F

    Rain Likely
    then Slight
    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain. Snow level 1800 feet rising to 2500 feet in the afternoon. Mostly sunny, with a high near 56.

    High: 56 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 68. South southwest wind around 6 mph.
Tonight
A slight chance of rain before 3am, then a slight chance of rain after 5am. Mostly cloudy, with a low around 50. South wind 3 to 5 mph. Chance of precipitation is 20%.
Thursday
A 30 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 66. South wind 3 to 6 mph.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 54. South wind 3 to 6 mph.
Friday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 61. South wind 5 to 7 mph. Chance of precipitation is 70%.
Friday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.
Saturday
A 20 percent chance of rain. Snow level 1800 feet rising to 2500 feet in the afternoon. Mostly sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
Mostly cloudy, with a high near 59.
Monday Night
A chance of rain. Mostly cloudy, with a low around 45.
Tuesday
Rain. Cloudy, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland OR
 45.53°N 122.67°W (Elev. 200 ft)
Last Update:
12:41 pm PDT Mar 18, 2026
Forecast Valid:
1pm PDT Mar 18, 2026-6pm PDT Mar 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