National Weather Service United States Department of Commerce

A stalled frontal boundary and ample monsoonal moisture will lead to flash flood potential from the Great Basin to the Great Plains tonight and Tuesday

A stalled frontal boundary will set up along the southern and central Rockies for the next couple of days providing focus for showers and thunderstorms. In addition, ample monsoonal moisture will stream in across the southwest bringing enough moisture to introduce a flash flood threat from the Great Basin and Southwest eastward across the central and southern Rockies into the adjacent Plains.
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Current Conditions

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3 Miles S Mount St Helens WA

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

Tonight

Mostly Clear

Mostly
Clear

Low: 58 °F

Tuesday

Sunny

Sunny

High: 90 °F

Tuesday
Night

Mostly Clear

Mostly
Clear

Low: 57 °F

Wednesday

Sunny

Sunny

High: 86 °F

Wednesday
Night

Mostly Clear

Mostly
Clear

Low: 57 °F

Thursday

Sunny

Sunny

High: 85 °F

Thursday
Night

Mostly Clear

Mostly
Clear

Low: 57 °F

Friday

Sunny

Sunny

High: 89 °F

Friday
Night

Mostly Clear

Mostly
Clear

Low: 53 °F

Detailed Forecast

  • Tonight Mostly clear, with a low around 58. North wind 5 to 9 mph.
  • Tuesday Sunny, with a high near 90. Calm wind becoming northwest 5 to 8 mph in the afternoon.
  • Tuesday Night Mostly clear, with a low around 57. North wind 6 to 10 mph.
  • Wednesday Sunny, with a high near 86. Northwest wind around 6 mph.
  • Wednesday Night Mostly clear, with a low around 57. Northwest wind 5 to 8 mph becoming south southwest in the evening.
  • Thursday Sunny, with a high near 85.
  • Thursday Night Mostly clear, with a low around 57.
  • Friday Sunny, with a high near 89.
  • Friday Night Mostly clear, with a low around 53.
  • Saturday Sunny, with a high near 84.
  • Saturday Night Mostly clear, with a low around 53.
  • Sunday Sunny, with a high near 84.
  • Sunday Night Partly cloudy, with a low around 53.
  • Monday Mostly sunny, with a high near 82.