Portland, Oregon Weather Conditions

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Current Conditions

  • 58°
  • Mostly Cloudy
  • Wind: Variable 6 mph
  • Humidity: 87%
  • Visibility: 10.0 miles
  • Dew Point: 54°
  • Pressure: 30.04 in. +

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Next 12 Hours

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Rain Showers
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Rain Showers
  • High: 64 °
  • Low: 48 °
  • Rain Showers
  • Wednesday
  • Partly Cloudy
  • High: 64 °
  • Low: 48 °
  • Partly Cloudy
  • Thursday
  • Partly Cloudy
  • High: 73 °
  • Low: 48 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 75 °
  • Low: 57 °
  • Partly Cloudy
  • Saturday
  • Chance of Rain
  • High: 77 °
  • Low: 55 °
  • Chance of Rain

Forecast for Portland, Oregon

Updated: 8:00 PM PDT on September 29, 2014

  • Monday

    Overcast with a chance of rain, then rain showers in the afternoon. High of 68F. Winds from the SSW at 5 to 15 mph. Chance of rain 80%.

  • Monday Night

    Overcast with rain showers. Low of 55F. Winds from the WSW at 5 to 10 mph. Chance of rain 60%.

  • Tuesday

    Overcast with rain showers. High of 64F. Winds from the West at 5 to 10 mph. Chance of rain 50%.

  • Tuesday Night

    Partly cloudy with rain showers in the evening, then overcast. Low of 48F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday

    Overcast in the morning, then partly cloudy. High of 64F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Fog overnight. Low of 48F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. Fog early. High of 73F. Winds from the NE at 5 to 10 mph.

  • Thursday Night

    Mostly cloudy in the evening, then overcast. Low of 48F. Winds less than 5 mph.

  • Friday

    Overcast in the morning, then partly cloudy. High of 75F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 57F. Winds less than 5 mph.

  • Saturday

    Overcast in the morning, then mostly cloudy with a chance of rain. High of 77F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday Night

    Partly cloudy. Low of 55F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 81F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 55F. Winds less than 5 mph.

  • Monday

    Partly cloudy. High of 75F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 48F. Winds less than 5 mph.

  • Tuesday

    Partly cloudy. High of 70F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 48F. Winds less than 5 mph.

  • Wednesday

    Partly cloudy. High of 66F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Low of 48F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 66F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy. Low of 48F. Winds less than 5 mph.

  • Friday

    Clear. High of 68F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Special Statement  Statement as of 8:46 PM PDT on September 29, 2014


... Coolest weather so far this season expected this week...
... Upper ski resorts may see their first snow of the season...

Coolest weather so far this season is expected Tuesday and
Wednesday before temperatures begin to recover Thursday and
Friday. A cool... unsettled air mass will keep some showers
through Tuesday before finally tapering off Tuesday night and
early Wednesday.

The air mass will likely be cold enough to lower snow levels to
6000 to 8000 feet late tonight and early Tuesday. Timberline Lodge
may wake up to their first dusting of snow of the season Tuesday
morning... along with some of the other higher elevation ski
resorts. Snow accumulations are expected to be minimal... and any
new snow should melt off with the heating of the day Tuesday.

A chilly air mass will be left behind after precipitation tapers
off... and Wednesday night could be the coldest night so far this
season for most valley locations. Outlying valleys are expected to
dip into the upper 30s... with more urban areas falling well into
the 40s. Some high elevation valleys... and possibly the Upper Hood
River Valley... may see their first frost of the season Thursday
morning.

Recreationalists hiking or camping... especially in the Cascades...
should prepare themselves for the chilly autumn weather early
this week. People in the typically colder outlying valleys may
want to consider protecting their plants against frost... in case
temperatures fall a couple degrees lower than currently expected
Wednesday night.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Portland - West Hills, Portland, OR

Updated: 10:53 PM PDT

Temperature: 53.5 °F Dew Point: 51 °F Humidity: 92% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Graphs

Location: APRSWXNET Portland OR US, Portland, OR

Updated: 10:20 PM PDT

Temperature: 54 °F Dew Point: 53 °F Humidity: 95% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Graphs

Location: Bridlemile, Portland, OR

Updated: 10:44 PM PDT

Temperature: 53.4 °F Dew Point: 53 °F Humidity: 99% Wind: Calm Pressure: 29.88 in Hourly Precipitation: - Graphs

Location: Multnomah Village North, Portland, OR

Updated: 10:46 PM PDT

Temperature: 55.3 °F Dew Point: 54 °F Humidity: 95% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Graphs

Location: N of Bridlemile School, Portland, OR

Updated: 10:41 PM PDT

Temperature: 54.6 °F Dew Point: 54 °F Humidity: 97% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Graphs

Location: South Burlingame, Portland, OR

Updated: 10:53 PM PDT

Temperature: 57.2 °F Dew Point: 53 °F Humidity: 87% Wind: Calm Pressure: 29.69 in Hourly Precipitation: 0.00 in Graphs

Location: Richmond / Stripling Weather Network, Portland, OR

Updated: 10:46 PM PDT

Temperature: 57.2 °F Dew Point: 54 °F Humidity: 89% Wind: Calm Pressure: 30.01 in Hourly Precipitation: - Graphs

Location: Portland Rowing Club, Portland, OR

Updated: 10:53 PM PDT

Temperature: 56.8 °F Dew Point: 55 °F Humidity: 95% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Graphs

Location: Waverleigh Heights, Portland, OR

Updated: 10:47 PM PDT

Temperature: 57.1 °F Dew Point: 55 °F Humidity: 92% Wind: Calm Pressure: 30.03 in Hourly Precipitation: - Graphs

Location: Sullivan's Gulch, Portland, OR

Updated: 10:53 PM PDT

Temperature: 59.2 °F Dew Point: 53 °F Humidity: 81% Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Graphs

Location: Irvington, Portland, OR

Updated: 10:53 PM PDT

Temperature: 57.1 °F Dew Point: 54 °F Humidity: 90% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Graphs

Location: Laurelhurst, Portland, OR

Updated: 10:53 PM PDT

Temperature: 58.1 °F Dew Point: 48 °F Humidity: 68% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Graphs

Location: Smith School, Portland, OR

Updated: 10:44 PM PDT

Temperature: 54.3 °F Dew Point: 54 °F Humidity: 97% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Creston Park, Portland, OR

Updated: 10:53 PM PDT

Temperature: 57.7 °F Dew Point: 54 °F Humidity: 87% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Graphs

Location: Raleigh Park, Portland, OR

Updated: 10:52 PM PDT

Temperature: 54.2 °F Dew Point: 52 °F Humidity: 93% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Graphs

Location: SW Portland - Tryon Creek, Portland, OR

Updated: 10:52 PM PDT

Temperature: 54.9 °F Dew Point: 55 °F Humidity: 99% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Graphs

Location: West Slope, Portland, OR

Updated: 10:43 PM PDT

Temperature: 54.8 °F Dew Point: 54 °F Humidity: 96% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Graphs

Location: Torreyview, Portland, OR

Updated: 10:53 PM PDT

Temperature: 55.0 °F Dew Point: 51 °F Humidity: 86% Wind: Calm Pressure: 30.34 in Hourly Precipitation: 0.00 in Graphs

Location: Crystal P (West Haven), Portland, OR

Updated: 10:53 PM PDT

Temperature: 55.0 °F Dew Point: 52 °F Humidity: 87% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Graphs

Location: West Portland Park, Portland, OR

Updated: 10:52 PM PDT

Temperature: 54.2 °F Dew Point: 52 °F Humidity: 92% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Ardenwald Station #1, Portland, OR

Updated: 10:52 PM PDT

Temperature: 56.5 °F Dew Point: 55 °F Humidity: 95% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Graphs

Location: Garden Home, Portland, OR

Updated: 10:53 PM PDT

Temperature: 54.3 °F Dew Point: 54 °F Humidity: 97% Wind: Calm Pressure: 30.05 in Hourly Precipitation: 0.00 in Graphs

Location: Mt Tabor, Portland, OR

Updated: 10:50 PM PDT

Temperature: 54.7 °F Dew Point: 53 °F Humidity: 94% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Graphs

Location: Raleigh Hills, Beaverton, OR

Updated: 10:53 PM PDT

Temperature: 54.9 °F Dew Point: 54 °F Humidity: 96% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Humboldt, Portland, OR

Updated: 10:53 PM PDT

Temperature: 55.9 °F Dew Point: 51 °F Humidity: 84% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Graphs

Location: Portland, OR

Updated: 10:53 PM PDT

Temperature: 54.2 °F Dew Point: 53 °F Humidity: 95% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Graphs

Location: Portland - SE Lafayette, Portland, OR

Updated: 10:50 PM PDT

Temperature: 57.2 °F Dew Point: - Humidity: 91% Wind: North at 3.4 mph Pressure: 29.76 in Hourly Precipitation: - Graphs

Location: Leahy & NW 94th Tr., Portland, OR

Updated: 10:37 PM PDT

Temperature: 54.0 °F Dew Point: 51 °F Humidity: 91% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Graphs

Location: East Beaverton, Beaverton, OR

Updated: 9:32 PM PDT

Temperature: 56.8 °F Dew Point: 55 °F Humidity: 94% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Graphs

Location: Forest Heights, Portland, OR

Updated: 10:45 PM PDT

Temperature: 54.1 °F Dew Point: 49 °F Humidity: 82% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Beaumont-Wilshire, Portland, OR

Updated: 10:53 PM PDT

Temperature: 55.1 °F Dew Point: 51 °F Humidity: 86% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Graphs

Location: Milwaukie, OR

Updated: 10:53 PM PDT

Temperature: 55.9 °F Dew Point: 54 °F Humidity: 93% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Graphs

Location: Hollywood-Rose City Park, Portland, OR

Updated: 10:52 PM PDT

Temperature: 56.1 °F Dew Point: 54 °F Humidity: 92% Wind: Calm Pressure: 30.02 in Hourly Precipitation: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
833 PM PDT Monday Sep 29 2014 


Synopsis...a cold front moved through the region this 
afternoon...ushering a cool showery air mass. The showers will 
gradually diminish through Tuesday. Noticeably cooler air behind the 
front may bring the first dusting of snow to some of the higher ski 
resort elevations early Tuesday. The second half of the week will 
feel like autumn with chilly nights and crisp afternoons...with a 
gradual warming trend Thursday and Friday as an upper level ridge 
builds northward from California. Mainly dry and warmer weather 
should prevail into the weekend for most of the district...but the 
ridge may weaken enough to allow some rain along the north coast. 


&& 


Short term discussion...tonight through Thursday... 
the cold front that moved into the forecast area earlier today is now 
east of the Cascades. Much of the shower activity is over the 
Cascades where moderate orographics is maintaining rain rates around 
0.05 to 0.10 inch per hour. Infrared satellite loop show lower 
clouds over the NE Pacific that will stream into the area tonight for 
continued showers activity. The interior lowlands should escape the 
heavier showers as some rain shadowing is likely in the west to 
northwest flow below 850 mb. 


Lowering snow levels...model 1000-500 mb thickness values and 
sounding temperatures continue to indicate that a light dusting of snow is 
possible above 6000 feet over the S Washington and north or Cascades by tomorrow 
morning. 


Expect plenty of clouds and continued shower activity tomorrow as 
additional energy rotates through the region on the backside of the 
departing upper level trough. With the much cooler air mass in 
place...high temperatures should be a good 5 to 10 degree below normal 
over the interior valleys...with most spots topping out in the low to 
middle 60s. Showers should taper off overnight tomorrow as the upper 
level jet core moves to our north and the upper flow pattern 
transitions to anticyclonic behind the departing trough. Expect some 
clearing to occur overnight...which may lead to some patchy fog 
development for some low lying spots with the fairly moist low level 
air mass. 


There will likely be a few showers lingering into Wednesday 
morning...mainly over the higher terrain. But the trend definitely 
appears to be toward drier weather for most. The air mass will begin 
to warm just a bit Wednesday as weak subside begins to occur...but daytime 
temperatures are still expected to be on the cooler side. Then expect the 
coolest night of the season so far for Wednesday night. Skies should be 
mostly clear by this point...and with not much wind expected 
overnight...creating nearly ideal radiational cooling conditions. We 
increased low temperatures just a bit with the latest forecast...but still have 
many outlying valley locations dropping to near 40 degree f. It is not 
out of the question that a few spots will see a light frost. Also 
expect that we will see quite a bit of fog across the region early 
Thursday morning. 


An upper level ridge axis is modeled to move over the U.S. West Coast 
on Thursday. This may allow a thermally induced surface trough to develop 
build along the S or coast...which would create a northerly or even 
offshore flow pattern over our forecast area. Expect Thursday to be a sunny 
and pleasant day...with daytime highs warming back to near seasonal 
normals. Pyle/mh 


Long term...Thursday night through Monday...not much chance made to the 
extended forecast today. An upper level ridge is forecast to remain 
entrenched over the West Coast...with flat ridging over the Pacific northwest. 
This is currently expected to keeping conditions mostly dry across 
our forecast area with temperatures slightly above normal. However...a 
significant atmospheric river event appears likely to bring heavy 
rains to our north along the British Columbia coast. There is a 
slight chance that the ridge will weaken enough to allow some light 
rain to brush the northernmost portions of our forecast area from time to 
time over the weekend or early next week. Pyle 


&& 


Aviation...mostly VFR conditions in the wake of a cold 
front...but Post frontal showers will result in temporary brief 
MVFR conditions. Showers will decrease throughout the day Tuesday 
with the continued threat for brief MVFR ceilings. Winds will calm 
late Tuesday night...and expect shallow radiation fog to result in 
spotty IFR conditions for the interior valleys...especially south 
of kmmv. 


Kpdx and approaches...VFR conditions this evening. MVFR ceilings 
possible between 12 and 18z. Tj 


&& 


Marine...seas flirted with small craft conditions south of 
Newport Oregon this evening as buoy 50 had one observations with 
a significant wave height of 9.5 feet. A northwest swell between 6 and 8 
feet 
will move through the waters through Wednesday. High pressure will 
build Tuesday and hold through Friday with a return of north to 
northeast winds to the waters. Another front will approach the 
from the north Friday night. Tj 


&& 


Pqr watches/warnings/advisories... 
or...none. 
Washington...none. 
Pz...Small Craft Advisory for rough Columbia River bar from 7 PM to 
11 PM PDT Tuesday. 


&& 


$$ 


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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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