National Weather Service United States Department of Commerce

Oppressive heat and humidity building into the central and southeast U.S.

A heat wave is building into parts of the central and southeast U.S. this week. The combination of heat and humidity will lead to dangerous heat indices, especially in parts of the central Mississippi River Valley where an Excessive Heat Warning is in effect. Heat Advisories are in effect elsewhere across the region. Relief is not expected for several days.
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Current Conditions

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Portland International Airport OR

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

Overnight

Increasing Clouds

Increasing
Clouds

Low: 58 °F

Thursday

Gradual Clearing

Gradual
Clearing

High: 75 °F

Thursday
Night

Areas Drizzle

Areas
Drizzle

Low: 59 °F

Friday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 78 °F

Friday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 59 °F

Saturday

Mostly Sunny

Mostly
Sunny

High: 83 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 59 °F

Sunday

Sunny

Sunny

High: 84 °F

Sunday
Night

Mostly Clear

Mostly
Clear

Low: 59 °F

Detailed Forecast

  • Overnight Increasing clouds, with a low around 58. West northwest wind around 5 mph.
  • Thursday Cloudy through mid morning, then gradual clearing, with a high near 75. West wind 3 to 7 mph.
  • Thursday Night Areas of drizzle after 11pm. Increasing clouds, with a low around 59. West northwest wind 5 to 8 mph becoming calm in the evening.
  • Friday A 20 percent chance of showers before 11am. Mostly cloudy, with a high near 78. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
  • Friday Night Mostly cloudy, with a low around 59. Northwest wind 3 to 7 mph.
  • Saturday Mostly sunny, with a high near 83.
  • Saturday Night Mostly clear, with a low around 59.
  • Sunday Sunny, with a high near 84.
  • Sunday Night Mostly clear, with a low around 59.
  • Monday Sunny, with a high near 79.
  • Monday Night Mostly clear, with a low around 61.
  • Tuesday Sunny, with a high near 83.
  • Tuesday Night Clear, with a low around 62.
  • Wednesday Sunny, with a high near 86.