Portland, Oregon Weather Conditions

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Current Conditions

  • 69°
  • Mostly Cloudy
  • Wind: North 7 mph
  • Humidity: 45%
  • Visibility: 10.0 miles
  • Dew Point: 47°
  • Pressure: 29.92 in. +

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Next 12 Hours

7  pm
10  pm
1  am
4  am
7  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
67°
61°
55°
52°
51°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Partly Cloudy
  • High: 67 °
  • Low: 47 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 70 °
  • Low: 47 °
  • Partly Cloudy
  • Saturday
  • Clear
  • High: 72 °
  • Low: 49 °
  • Clear
  • Sunday
  • Partly Cloudy
  • High: 72 °
  • Low: 51 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 76 °
  • Low: 52 °
  • Partly Cloudy

Forecast for Portland, Oregon

Updated: 2:29 PM PDT on September 2, 2015

  • Tonight

    Partly cloudy. Chance of showers and a slight chance of thunderstorms in the evening...then a slight chance of showers after midnight. Lows around 50. Southwest wind 5 to 10 mph. Chance of precipitation 40 percent. Rainfall amounts less than a tenth of an inch...except higher amounts possible in thunderstorms.

  • Thursday

    Partly sunny. Slight chance of showers in the morning... then a chance of showers and a slight chance of thunderstorms in the afternoon. Highs 65 to 70. West wind 5 to 10 mph. Chance of precipitation 50 percent. Rainfall amounts less than a tenth of an inch...except higher amounts possible in thunderstorms.

  • Thursday Night

    Partly cloudy. A 20 percent chance of showers in the evening. Lows 45 to 50. North wind 5 to 10 mph.

  • Friday

    Partly sunny. Highs 65 to 70. Northwest wind 5 to 10 mph.

  • Friday Night

    Partly cloudy. Lows 45 to 50. Northwest wind 5 to 15 mph.

  • Saturday

    Partly cloudy in the morning...then mostly sunny. Highs around 75.

  • Saturday Night

    Partly cloudy. Lows around 50.

  • Sunday

    Partly cloudy. Highs 70 to 75.

  • Sunday Night

    Partly cloudy. Lows around 50.

  • Labor Day

    Partly cloudy. Highs around 75.

  • Monday Night

    Partly cloudy in the evening...then mostly cloudy. Lows 50 to 55.

  • Tuesday

    Mostly cloudy in the morning...then partly cloudy with a 20 percent chance of showers in the afternoon. Highs around 75.

  • Tuesday Night

    Partly cloudy with a 20 percent chance of showers. Lows around 50.

  • Wednesday

    Partly cloudy. A 20 percent chance of showers in the morning. Highs 75 to 80.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Southwest Portland, Portland, OR

Updated: 7:25 PM PDT

Temperature: 64.9 °F Dew Point: 48 °F Humidity: 54% Wind: North at - Pressure: 30.00 in Hourly Precipitation: - Heat Index: - Graphs

Location: Portland - West Hills, Portland, OR

Updated: 7:25 PM PDT

Temperature: 62.4 °F Dew Point: 45 °F Humidity: 52% Wind: NW at 1.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:25 PM PDT

Temperature: 66.2 °F Dew Point: 50 °F Humidity: 55% Wind: North at - Pressure: 29.98 in Hourly Precipitation: - Heat Index: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:20 PM PDT

Temperature: 64.4 °F Dew Point: 49 °F Humidity: 56% Wind: North at - Pressure: 29.99 in Hourly Precipitation: - Heat Index: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:20 PM PDT

Temperature: 69.4 °F Dew Point: 47 °F Humidity: 44% Wind: North at - Pressure: 29.71 in Hourly Precipitation: - Heat Index: - Graphs

Location: Hillsdale, Portland, OR

Updated: 7:11 PM PDT

Temperature: 65.5 °F Dew Point: 45 °F Humidity: 47% Wind: West at 2.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Bridlemile, Portland, OR

Updated: 7:14 PM PDT

Temperature: 64.9 °F Dew Point: 45 °F Humidity: 48% Wind: North at 2.2 mph Pressure: 29.74 in Hourly Precipitation: - Heat Index: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:20 PM PDT

Temperature: 69.6 °F Dew Point: 50 °F Humidity: 50% Wind: North at - Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Downtown Portland, Portland, OR

Updated: 7:25 PM PDT

Temperature: 69.1 °F Dew Point: 45 °F Humidity: 41% Wind: North at - Pressure: 29.80 in Hourly Precipitation: - Heat Index: - Graphs

Location: Multnomah Village North, Portland, OR

Updated: 7:15 PM PDT

Temperature: 65.4 °F Dew Point: 46 °F Humidity: 49% Wind: WNW at 1.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: N of Bridlemile School, Portland, OR

Updated: 7:13 PM PDT

Temperature: 65.9 °F Dew Point: 44 °F Humidity: 46% Wind: West at 7.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hoyt Arboretum, Portland, OR

Updated: 7:21 PM PDT

Temperature: 63.7 °F Dew Point: 46 °F Humidity: 53% Wind: SSE at 2.0 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Westerly, NW Portland, Portland, OR

Updated: 7:14 PM PDT

Temperature: 68.2 °F Dew Point: 46 °F Humidity: 45% Wind: Calm Pressure: 29.89 in Hourly Precipitation: - Heat Index: - Graphs

Location: Brooklyn, Portland, OR

Updated: 7:25 PM PDT

Temperature: 69.4 °F Dew Point: 45 °F Humidity: 41% Wind: Calm Pressure: 29.41 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Pearl District, Portland, OR

Updated: 7:25 PM PDT

Temperature: 70.7 °F Dew Point: 45 °F Humidity: 39% Wind: North at - Pressure: 29.75 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Sylvan Highlands, Portland, OR

Updated: 7:25 PM PDT

Temperature: 62.8 °F Dew Point: 44 °F Humidity: 50% Wind: Calm Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: South Burlingame, Portland, OR

Updated: 7:25 PM PDT

Temperature: 66.4 °F Dew Point: 46 °F Humidity: 48% Wind: Calm Pressure: 29.56 in Hourly Precipitation: 1.63 in Heat Index: - Graphs

Location: Buckman, Portland, OR

Updated: 7:20 PM PDT

Temperature: 70.5 °F Dew Point: 49 °F Humidity: 46% Wind: North at - Pressure: 29.78 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:20 PM PDT

Temperature: 68.7 °F Dew Point: 52 °F Humidity: 54% Wind: North at - Pressure: 30.01 in Hourly Precipitation: - Heat Index: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:20 PM PDT

Temperature: 67.1 °F Dew Point: 47 °F Humidity: 48% Wind: North at - Pressure: 29.99 in Hourly Precipitation: - Heat Index: - Graphs

Location: Richmond / Stripling Weather Network, Portland, OR

Updated: 7:15 PM PDT

Temperature: 68.7 °F Dew Point: 47 °F Humidity: 46% Wind: West at 2.2 mph Pressure: 29.86 in Hourly Precipitation: - Heat Index: - Graphs

Location: Portland Rowing Club, Portland, OR

Updated: 7:25 PM PDT

Temperature: 67.2 °F Dew Point: 47 °F Humidity: 49% Wind: NW at 2.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:20 PM PDT

Temperature: 66.6 °F Dew Point: 51 °F Humidity: 57% Wind: North at - Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Waverleigh Heights, Portland, OR

Updated: 7:23 PM PDT

Temperature: 67.3 °F Dew Point: 47 °F Humidity: 49% Wind: Calm Pressure: 29.91 in Hourly Precipitation: - Heat Index: - Graphs

Location: West Slope, Portland, OR

Updated: 7:16 PM PDT

Temperature: 66.7 °F Dew Point: 46 °F Humidity: 47% Wind: Calm Pressure: 29.63 in Hourly Precipitation: - Heat Index: - Graphs

Location: Richmond, Portland, OR

Updated: 7:25 PM PDT

Temperature: 68.4 °F Dew Point: 52 °F Humidity: 56% Wind: North at - Pressure: 29.98 in Hourly Precipitation: - Heat Index: - Graphs

Location: Northwest District, Portland, OR

Updated: 7:20 PM PDT

Temperature: 64.9 °F Dew Point: 54 °F Humidity: 66% Wind: North at - Pressure: 29.82 in Hourly Precipitation: - Heat Index: - Graphs

Location: Irvington, Portland, OR

Updated: 7:25 PM PDT

Temperature: 67.7 °F Dew Point: 49 °F Humidity: 52% Wind: NNW at 5.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Sellwood / West Moreland, Portland, OR

Updated: 7:15 PM PDT

Temperature: 67.8 °F Dew Point: 45 °F Humidity: 44% Wind: West at 3.7 mph Pressure: 29.65 in Hourly Precipitation: - Heat Index: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
238 PM PDT Wednesday Sep 2 2015 


Synopsis...multiple boundaries will move eastward through 
southwest Washington and northwest Oregon today with showers at times 
over much of the area. The parent upper trough will be slowly sagging 
south and the cooling aloft will give a chance of thunder over the 
northern coastal waters today and over the north interior this 
afternoon and evening. Scattered showers will continue tonight and 
Thursday over the area...especially north...as a couple pieces of 
energy rotate around the low and onshore. Temperatures cool aloft a bit more 
on Thursday for another chance of thunder especially north. The low 
will move south Thursday night and Friday as another batch of energy 
drops south on the back side of the low...moving onshore to our 
south. However...with the cool upper trough overhead and some 
sunshine expected to break through the clouds at times on Friday... 
this will give a chance of showers or possibly a chance of thunder 
especially over the higher terrain. The low will move off to the east 
this weekend for improving weather...though another system is 
possible early next week. 


&& 


Short term...an upper low remains centered over eastern British 
Columbia this afternoon with numerous shortwaves and associated 
surface boundaries rotating around it. The energy from one of the 
shortwaves is moving through the area this afternoon and providing 
just enough support for a thunderstorm or two. The shower near 
Rooster Rock just produced the first lightning strike of the day 
around 125 PM. Additional isolated storms will be possible through 
the evening hours from about Tillamook...McMinnville...and eastern 
Multnomah County north. Widespread showers have developed across the 
inland areas this afternoon and expect this trend to continue through 
the late afternoon. Lgx radar shows some additional showers offshore 
the northern coast which will move onshore. Raised probability of precipitation for the 
immediate term for all except the central coast...which should not 
see much shower action through the next 12 hours. 


As the upper low drifts south tomorrow...the air aloft will continue 
to cool...and model lifted indices and cape forecasts suggest that we 
could see a few additional thunderstorms Thursday afternoon over as 
similar area as today. Shower coverage will be less tomorrow 
though...likely favoring northern areas and leaving the central 
coast...southern valley...and much of the Cascades dry. 


The models continue to show energy dropping south off the coast along 
the west or back side of the low Thursday night and Friday and moving 
onshore to our south. Thus...there should be a minimum of showers 
Thursday night into Friday morning. However...this drags the upper 
low across our forecast area along with its cold pool aloft... which 
will be over the area Friday afternoon and evening. This will 
likely lead to some showers again and possibly a thunderstorms in the 
afternoon and evening...mainly over the higher terrain of the 
Cascades. 


Rain chances decrease further Saturday as the upper low moves 
southeast and out of the area...but have left some lingering probability of precipitation 
along the Cascade crest through Saturday morning as energy from the 
back side of the low moves through. 


With upper trough moving through...temperatures will remain cooler 
through the end of the work week and at least a couple of 
degrees below normal through the weekend. Through 
Friday...temperatures will feel more like early to middle October than 
early September. Inland low temperatures will also be significantly 
more comfortable with lows well below 60 degrees. Will likely see a 
number of temperatures in the 40s first thing Friday morning so go 
ahead and find a sweater if you don't already have one out. 
Bowen/Tolleson 


Long term...Saturday night through Wednesday. Confidence 
again somewhat below average for the start of next week with model 
guidance exhibiting notable run to run variability. The overall 
pattern will have the the longwave trough well into eastern Oregon 
by Saturday night. A few weak upper troughs pass to the north of the 
area which may provide for some light showers at times Sunday or 
Monday...primarily for the north Oregon coast and SW Washington. Another 
upper trough may bring some more widespread showers and slight 
cooling to the area on Tuesday. Overall...with only weaker 
disturbances passing near the area...heights gradually will rise to 
support temperatures closer to seasonal normals and generally expect 
drier and warmer again for the middle of the week and trended the 
forecast for Wednesday in this direction in line with the 12z European model (ecmwf) 
solution. Cullen 
&& 


Aviation...expect mostly VFR conditions across the region the 
next 24 hours...with scattered showers through this evening. Will 
continue to see a threat for thunderstorms over the north coast 
and valley through around 03z. Shower and thunderstorm activity 
shifts north of ksle Thursday afternoon/evening. As usual...brief 
periods of reduced ceilings and visibility possible under moderate to heavy 
showers. MVFR visibility possible along the central coast late 
tonight...but confidence is not high that is will develop. 


Kpdx and approaches...VFR the next 24 hours...with scattered 
showers through this evening. Will also continue to see a threat 
of thunderstorms through around 03z. Showers and thunderstorms 
also possible Thursday afternoon/evening. Could see brief periods 
of reduced ceilings and visibility under heavier showers. /64 


&& 


Marine...the upper low will continue to bring a threat of showers 
and thunderstorm to the waters through at least Friday morning. 
The associated surface low will move inland over northern 
Washington this evening. Wind currently gusting to 15 knots...with 
seas around 9 feet. Seas look to continue to fall through this 
evening as the surface low pushes onshore...so decided to cancel 
the current advisory for seas with the afternoon package. 


Surface high pressure looks to return to the waters this 
weekend...with thermal low pressure developing over northern 
California. Models continue to show marginal Small Craft Advisory 
gusts developing over the waters each afternoon/evening starting 
Saturday. Seas fall to around 5 to 7 feet Thursday afternoon and 
remain in this range through the forecast period. Will see periods 
of steep and choppy conditions over the central waters starting 
Saturday. /64 


&& 


Pqr watches/warnings/advisories... 
or...none. 
Washington...none. 
Pz...Small Craft Advisory for rough Columbia River bar from 6 PM to 
10 PM PDT this evening. 


&& 


$$ 


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This discussion is for northwest Oregon and southwest Washington 
from the Cascade crest to 60 nautical miles offshore. The area is 
commonly referred to as the forecast area. 



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