Portland, Oregon Weather Conditions

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Current Conditions

  • 63°
  • Partly Cloudy
  • Wind: West 13 mph
  • Humidity: 54%
  • Visibility: 10.0 miles
  • Dew Point: 46°
  • Pressure: 29.96 in. +

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Next 12 Hours

9  pm
12  am
3  am
6  am
9  am
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
56°
55°
51°
50°
56°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Partly Cloudy
  • High: 72 °
  • Low: 51 °
  • Partly Cloudy
  • Sunday
  • Mostly Cloudy
  • High: 72 °
  • Low: 51 °
  • Mostly Cloudy
  • Monday
  • Clear
  • High: 76 °
  • Low: 53 °
  • Clear
  • Tuesday
  • Partly Cloudy
  • High: 81 °
  • Low: 56 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 82 °
  • Low: 56 °
  • Partly Cloudy

Forecast for Portland, Oregon

Updated: 2:37 PM PDT on September 4, 2015

  • Tonight

    Partly cloudy. Slight chance of showers and thunderstorms in the evening...then a slight chance of showers until midnight. Patchy fog after midnight. Lows 45 to 50. Northwest wind 5 to 15 mph becoming light after midnight. Chance of precipitation 20 percent.

  • Saturday

    Partly cloudy in the morning...then mostly sunny. Patchy morning fog. Highs around 70. West wind 5 to 10 mph.

  • Saturday Night

    Partly cloudy. Lows 50 to 55. Northwest wind 5 to 10 mph.

  • Sunday

    Mostly cloudy. Chance of rain in the morning...then a slight chance of rain in the afternoon. Highs around 70. Light wind. Chance of rain 50 percent.

  • Sunday Night

    Partly cloudy. Lows 50 to 55. Light wind.

  • Labor Day

    Partly cloudy in the morning...then mostly sunny. Highs 70 to 75.

  • Monday Night

    Partly cloudy. Lows around 50.

  • Tuesday

    Partly cloudy. Highs around 80.

  • Tuesday Night

    Mostly clear. Lows around 55.

  • Wednesday

    Mostly sunny. Highs around 80.

  • Wednesday Night

    Partly cloudy. Lows around 55.

  • Thursday

    Partly cloudy in the morning...then mostly sunny. Highs around 80.

  • Thursday Night

    Mostly clear. Lows around 55.

  • Friday

    Mostly sunny. Highs around 80.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Southwest Portland, Portland, OR

Updated: 8:35 PM PDT

Temperature: 54.5 °F Dew Point: 48 °F Humidity: 80% Wind: North at - Pressure: 30.05 in Hourly Precipitation: - Graphs

Location: Portland - West Hills, Portland, OR

Updated: 8:41 PM PDT

Temperature: 55.4 °F Dew Point: 46 °F Humidity: 72% Wind: NNW at 3.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Graphs

Location: Southwest Portland, Portland, OR

Updated: 8:35 PM PDT

Temperature: 53.6 °F Dew Point: 51 °F Humidity: 90% Wind: North at - Pressure: 30.03 in Hourly Precipitation: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 8:35 PM PDT

Temperature: 58.8 °F Dew Point: 48 °F Humidity: 67% Wind: North at - Pressure: 29.75 in Hourly Precipitation: - Graphs

Location: Hillsdale, Portland, OR

Updated: 8:32 PM PDT

Temperature: 53.3 °F Dew Point: 49 °F Humidity: 84% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Southwest Portland, Portland, OR

Updated: 8:35 PM PDT

Temperature: 64.4 °F Dew Point: 48 °F Humidity: 55% Wind: North at - Pressure: 30.01 in Hourly Precipitation: - Graphs

Location: Hillsdale, Portland, OR

Updated: 8:35 PM PDT

Temperature: 51.8 °F Dew Point: 49 °F Humidity: 91% Wind: Calm Pressure: 29.76 in Hourly Precipitation: - Graphs

Location: Bridlemile, Portland, OR

Updated: 8:34 PM PDT

Temperature: 51.3 °F Dew Point: 50 °F Humidity: 97% Wind: ENE at 2.7 mph Pressure: 29.79 in Hourly Precipitation: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 8:35 PM PDT

Temperature: 59.9 °F Dew Point: 49 °F Humidity: 66% Wind: North at - Pressure: 29.97 in Hourly Precipitation: 0.00 in Graphs

Location: APRSWXNET, Portland, OR

Updated: 8:14 PM PDT

Temperature: 60 °F Dew Point: 50 °F Humidity: 69% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Downtown Portland, Portland, OR

Updated: 8:35 PM PDT

Temperature: 58.8 °F Dew Point: 48 °F Humidity: 66% Wind: North at - Pressure: 29.84 in Hourly Precipitation: - Graphs

Location: Multnomah Village North, Portland, OR

Updated: 8:34 PM PDT

Temperature: 54.1 °F Dew Point: 52 °F Humidity: 92% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Graphs

Location: Hoyt Arboretum, Portland, OR

Updated: 8:41 PM PDT

Temperature: 51.2 °F Dew Point: 49 °F Humidity: 93% Wind: ESE at 2.0 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Graphs

Location: Westerly, NW Portland, Portland, OR

Updated: 8:33 PM PDT

Temperature: 55.5 °F Dew Point: 49 °F Humidity: 78% Wind: Calm Pressure: 29.93 in Hourly Precipitation: - Graphs

Location: Brooklyn, Portland, OR

Updated: 8:40 PM PDT

Temperature: 55.9 °F Dew Point: 53 °F Humidity: 89% Wind: Calm Pressure: 29.46 in Hourly Precipitation: 0.00 in Graphs

Location: Pearl District, Portland, OR

Updated: 8:35 PM PDT

Temperature: 58.8 °F Dew Point: 50 °F Humidity: 72% Wind: North at - Pressure: 29.81 in Hourly Precipitation: - Graphs

Location: Sylvan Highlands, Portland, OR

Updated: 8:41 PM PDT

Temperature: 52.0 °F Dew Point: 49 °F Humidity: 88% Wind: Calm Pressure: 29.66 in Hourly Precipitation: 0.00 in Graphs

Location: Downtown, Portland, OR

Updated: 8:35 PM PDT

Temperature: 64.9 °F Dew Point: 48 °F Humidity: 54% Wind: North at - Pressure: 29.91 in Hourly Precipitation: - Graphs

Location: South Burlingame, Portland, OR

Updated: 8:41 PM PDT

Temperature: 57.8 °F Dew Point: 48 °F Humidity: 71% Wind: Calm Pressure: 29.61 in Hourly Precipitation: 1.63 in Graphs

Location: Pearl District, Portland, OR

Updated: 8:35 PM PDT

Temperature: 56.5 °F Dew Point: 42 °F Humidity: 58% Wind: North at - Pressure: 29.92 in Hourly Precipitation: - Graphs

Location: Buckman, Portland, OR

Updated: 8:35 PM PDT

Temperature: 59.4 °F Dew Point: 51 °F Humidity: 74% Wind: North at - Pressure: 29.83 in Hourly Precipitation: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 8:35 PM PDT

Temperature: 57.6 °F Dew Point: 50 °F Humidity: 77% Wind: North at - Pressure: 30.06 in Hourly Precipitation: - Graphs

Location: Southwest Portland, Portland, OR

Updated: 8:35 PM PDT

Temperature: 55.0 °F Dew Point: 53 °F Humidity: 92% Wind: North at - Pressure: 30.04 in Hourly Precipitation: - Graphs

Location: Richmond / Stripling Weather Network, Portland, OR

Updated: 8:33 PM PDT

Temperature: 56.1 °F Dew Point: 52 °F Humidity: 87% Wind: Calm Pressure: 29.92 in Hourly Precipitation: - Graphs

Location: Portland Rowing Club, Portland, OR

Updated: 8:41 PM PDT

Temperature: 59.0 °F Dew Point: 51 °F Humidity: 76% Wind: WNW at 1.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Graphs

Location: Southwest Portland, Portland, OR

Updated: 8:35 PM PDT

Temperature: 57.4 °F Dew Point: 48 °F Humidity: 72% Wind: North at - Pressure: 29.89 in Hourly Precipitation: 0.00 in Graphs

Location: Waverleigh Heights, Portland, OR

Updated: 8:28 PM PDT

Temperature: 55.9 °F Dew Point: 53 °F Humidity: 91% Wind: Calm Pressure: 29.95 in Hourly Precipitation: - Graphs

Location: West Slope, Portland, OR

Updated: 8:34 PM PDT

Temperature: 55.8 °F Dew Point: 49 °F Humidity: 78% Wind: Calm Pressure: 29.68 in Hourly Precipitation: - Graphs

Location: Richmond, Portland, OR

Updated: 8:35 PM PDT

Temperature: 58.1 °F Dew Point: 50 °F Humidity: 75% Wind: North at - Pressure: 30.04 in Hourly Precipitation: - Graphs

Location: Northwest District, Portland, OR

Updated: 8:35 PM PDT

Temperature: 53.4 °F Dew Point: 53 °F Humidity: 100% Wind: North at - Pressure: 29.86 in Hourly Precipitation: - Graphs

Location: Irvington, Portland, OR

Updated: 8:41 PM PDT

Temperature: 58.5 °F Dew Point: 52 °F Humidity: 78% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
240 PM PDT Friday Sep 4 2015 


Synopsis...a broad upper level low will move south across western 
Washington and western Oregon today...producing continued chances for 
showers and isolated thunderstorms...especially this afternoon and 
evening. The weather will improve Saturday as the upper low finally 
begins to slide east though some showers may linger in the higher 
Cascades until later in the day Saturday. Another low is then 
expected to move into the Pacific northwest from the northwest... 
with some precipitation possible late Saturday night into Sunday 
night mainly across southwest Washington and far northwest Oregon. 
Warmer and drier weather is expected to return for much of the coming 
week. 
&& 


Short term...with the afternoon heating focus for shower activity 
shifted inland. Upper trough as seen in water vapor pictures was 
shifting east across the Willamette Valley early this afternoon. Trough 
is expected to shift east of the Cascades late tonight...with a 
shortwave swinging down around the west side of the trough late 
tonight. Isolated thunderstorms were popping up with the showers. 
Will keep scattered showers and isolated thunderstorms through the 
evening...then with the loss of surface heating and upper trough 
moving east expect only lingering chance for showers to be over the 
Cascades late tonight into Sat morning. With plenty of breaks in 
clouds overnight expect another cool night tonight. 


As the upper trough departs flow turns northwest Sat. Models agree on a 
weak frontal system dropping SW off the British Columbia coast Sat...eventually 
moving into western Washington Sun morning. A moist onshore low level flow 
precedes the system...at least across the north part of the forecast 
area. Will continue to indictae the first threat for rain on the S 
Washington coast as early as Sat evening...then spread probability of precipitation further inland 
late Sat night and Sun morning. Supporting shortwave aloft 
follows...and is to move southeast across Washington Sun night bringing chances for 
rain to an end. Models indicate modest moist isentropic lift around 
290k isentrope by Sun morning across SW Washington...so will bump probability of precipitation up a 
bit across the northwest corner of the forecast area then. Dry weather to 
follow Monday as a surface ridge of high pressure pokes in over the region 
off the Pacific. 


Long term...Monday night through Friday. Upper-level flow becomes 
more zonal as the trough which has been stationary over our area 
moves off to the east. High pressure builds back over the western 
Continental U.S....which will push the storm track to our north into Washington 
and British Columbia. This brings back dry and warm weather more 
typical of this time of year for our area. Expect warmer...more 
seasonal temperatures starting on Tuesday and continuing through the 
end of the week. North coast may continue to see some clouds Tuesday 
through Thursday as a couple weak systems clip the northern portion 
of our area. Otherwise...the rest of southwest Washington and 
northwest Oregon will remain mostly sunny through the end of next 
week. -McCoy 
&& 


Aviation...conditions generally VFR through this evening under 
scattered cumulus. Will continue to see scattered showers and a 
slight chance of isolated thunderstorms through around 03z. Skies 
should once again clear overnight allowing the lower atmosphere to 
stabilize. With light winds and ample low level moisture will 
likely see widespread IFR to MVFR stratus redevelop across the 
region after 09z. Expect any flight restrictions that develop 
tonight to improve by late Sunday morning. 


Kpdx and approaches...VFR under scattered cumulus through this evening. 
Will continue to see scattered showers and a slight chance of 
thunderstorms through around 03z. Clearing skies overnight should 
allow widespread IFR to MVFR stratus to redevelop after 10z. /64 


&& 


Marine...high pressure over the northeast Pacific and increasing 
low pressure over the interior will bring marginal Small Craft 
Advisory winds to the waters...with gusts generally around 20 knots. 
Will hold off on issuing an advisory as confidence remains low 
that we will see widespread advisory gusts above 21 knots. A weak 
front will move across the waters on Sunday and likely bring a 
few hours of southerly winds...but impacts should remain minimal. 
Thermal low pressure looks to redevelop over southern Oregon next 
week bringing a return of gusty northerly winds...especially to 
the central Oregon waters. A few weak disturbances may brush the 
northern waters through the week...but main impact will be a few 
hours of westerly winds. 


Seas remain around 4 to 6 feet through much of the forecast period 
and will become wind driven early next week...especially over the 
central Oregon waters. Seas may build towards 7 feet late next week. 
/64 


&& 


Pqr watches/warnings/advisories... 
or...none. 
Washington...none. 
Pz...none. 




&& 


$$ 


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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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