Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Flood Watch in effect from December 8, 04:00 AM PST until December 12, 04:00 AM PST

Current conditions at

Portland-Hillsboro Airport (KHIO)

Lat: 45.54765°NLon: 122.95568°WElev: 194.0ft.

Mist

53°F

12°C

Humidity	89%
Wind Speed	S 18 MPH
Barometer	30.04 in (1017.27 mb)
Dewpoint	50°F (10°C)
Visibility	6.00 mi
Last update	07 Dec 10:53 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Cedar Hills OR

Flood Watch December 8, 04:00am until December 12, 04:00am

Click here for hazard details and duration

Flood Watch

Today
High: 57 °F
Rain
Tonight
Low: 50 °F
Rain Likely
Monday
High: 58 °F
Rain and
Breezy
Monday Night
Low: 48 °F
Rain and
Breezy
Tuesday
High: 56 °F
Rain
Tuesday Night
Low: 49 °F
Rain
Wednesday
High: 57 °F
Rain
Wednesday Night
Low: 48 °F
Rain
Thursday
High: 55 °F
Rain Likely

Detailed Forecast

Today

Rain. High near 57. South southwest wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

Tonight

Rain likely, mainly after 1am. Mostly cloudy, with a low around 50. South wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday

Rain. High near 58. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Monday Night

Rain. Low around 48. Breezy, with a southwest wind 10 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Tuesday

Rain. High near 56. East wind around 6 mph becoming south southwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Tuesday Night

Rain. Low around 49. Chance of precipitation is 100%.

Wednesday

Rain. High near 57. Chance of precipitation is 100%.

Wednesday Night

Rain. Mostly cloudy, with a low around 48.

Thursday

Rain likely, mainly before 10am. Mostly cloudy, with a high near 55.

Thursday Night

A chance of rain. Mostly cloudy, with a low around 47.

Friday

A slight chance of rain. Mostly cloudy, with a high near 57.