Portland Hillsboro, Oregon Weather Conditions

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Current Conditions

  • 64°
  • Overcast
  • Wind: Calm
  • Humidity: 73%
  • Visibility: 10.0 miles
  • Dew Point: 55°
  • Pressure: 29.83 in. 0

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Next 12 Hours

9  pm
12  am
3  am
6  am
9  am
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
66°
63°
59°
56°
59°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Partly Cloudy
  • High: 71 °
  • Low: 46 °
  • Partly Cloudy
  • Thursday
  • Partly Cloudy
  • High: 70 °
  • Low: 46 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 73 °
  • Low: 46 °
  • Partly Cloudy
  • Saturday
  • Clear
  • High: 76 °
  • Low: 47 °
  • Clear
  • Sunday
  • Partly Cloudy
  • High: 78 °
  • Low: 51 °
  • Partly Cloudy

Forecast for Portland Hillsboro, Oregon

Updated: 2:52 PM PDT on September 1, 2015

  • Tonight

    Mostly cloudy. Slight chance of showers in the evening... then a chance of showers after midnight. Lows around 55. West wind 5 to 15 mph. Chance of precipitation 50 percent. Rainfall amounts around a tenth of an inch.

  • Wednesday

    Mostly cloudy. Chance of showers in the morning...then a chance of showers and a slight chance of thunderstorms in the afternoon. Highs around 70. Light wind. Chance of precipitation 50 percent. Rainfall amounts around a tenth of an inch...except higher amounts possible in thunderstorms.

  • Wednesday Night

    Mostly cloudy. Slight chance of showers and thunderstorms in the evening...then a slight chance of showers after midnight. Lows around 50. West wind 5 to 10 mph. Chance of precipitation 20 percent.

  • Thursday

    Partly sunny with a 20 percent chance of showers. Highs 65 to 70. Light wind.

  • Thursday Night

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

  • Friday

    Partly sunny. Highs 65 to 70.

  • Friday Night

    Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows 45 to 50.

  • Saturday

    Partly cloudy. Highs 70 to 75.

  • Saturday Night

    Partly cloudy. Lows around 50.

  • Sunday

    Partly cloudy. Highs around 75.

  • Sunday Night

    Partly cloudy. Lows around 50.

  • Labor Day

    Partly cloudy. Highs 75 to 80.

  • Monday Night

    Partly cloudy. Lows 50 to 55.

  • Tuesday

    Partly cloudy. A 20 percent chance of showers in the afternoon. Highs 70 to 75.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: CWS - Orion, Hillsboro, OR

Updated: 9:17 PM PDT

Temperature: 63.8 °F Dew Point: 56 °F Humidity: 75% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Graphs

Location: Columbia Weather Systems, Hillsboro, OR

Updated: 9:16 PM PDT

Temperature: 63.6 °F Dew Point: 57 °F Humidity: 78% Wind: South at 2.1 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Graphs

Location: Northeast Meadow Lane, Hillsboro, OR

Updated: 9:16 PM PDT

Temperature: 66.9 °F Dew Point: 58 °F Humidity: 72% Wind: North at - Pressure: 29.82 in Hourly Precipitation: 0.00 in Graphs

Location: Intel Ronler Acres, Hillsboro, OR, Hillsboro, OR

Updated: 9:19 PM PDT

Temperature: 63.8 °F Dew Point: 58 °F Humidity: 81% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Graphs

Location: Jackson School, Hillsboro, OR

Updated: 9:16 PM PDT

Temperature: 65.7 °F Dew Point: 55 °F Humidity: 69% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Graphs

Location: Jackson School, Hillsboro, OR

Updated: 9:14 PM PDT

Temperature: 62.8 °F Dew Point: 58 °F Humidity: 84% Wind: Calm Pressure: 29.63 in Hourly Precipitation: - Graphs

Location: Jackson School, Hillsboro, OR

Updated: 9:19 PM PDT

Temperature: 64.2 °F Dew Point: 60 °F Humidity: 87% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Graphs

Location: Bentley Orchards, Hillsboro, OR

Updated: 9:12 PM PDT

Temperature: 62.2 °F Dew Point: 54 °F Humidity: 76% Wind: South at 1.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Graphs

Location: Northwest 228th Avenue, Hillsboro, OR

Updated: 9:17 PM PDT

Temperature: 65.5 °F Dew Point: 57 °F Humidity: 74% Wind: North at - Pressure: 29.69 in Hourly Precipitation: - Graphs

Location: Connell Avenue, Hillsboro, OR

Updated: 9:19 PM PDT

Temperature: 64.6 °F Dew Point: 55 °F Humidity: 71% Wind: SE at 1.6 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Graphs

Location: Turner Creek II, Hillsboro, OR

Updated: 9:19 PM PDT

Temperature: 64.0 °F Dew Point: 58 °F Humidity: 80% Wind: SSW at 4.2 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Graphs

Location: Reedville, Hillsboro, OR

Updated: 9:17 PM PDT

Temperature: 64.0 °F Dew Point: 58 °F Humidity: 79% Wind: North at - Pressure: 29.91 in Hourly Precipitation: - Graphs

Location: Lely Park, Hillsboro, OR

Updated: 9:16 PM PDT

Temperature: 64.8 °F Dew Point: 57 °F Humidity: 75% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Graphs

Location: Near Century High School, Hillsboro, OR

Updated: 9:19 PM PDT

Temperature: 66.4 °F Dew Point: 57 °F Humidity: 72% Wind: Calm Pressure: 29.59 in Hourly Precipitation: 0.00 in Graphs

Location: Edwards Meadows, Hillsboro, OR

Updated: 9:17 PM PDT

Temperature: 64.1 °F Dew Point: 57 °F Humidity: 79% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Graphs

Location: Tanasbourne, Hillsboro, OR

Updated: 9:17 PM PDT

Temperature: 66.9 °F Dew Point: 54 °F Humidity: 64% Wind: North at - Pressure: 29.87 in Hourly Precipitation: 0.01 in Graphs

Location: Baseline / Cornelius Pass, Aloha, OR

Updated: 9:19 PM PDT

Temperature: 64.4 °F Dew Point: 58 °F Humidity: 80% Wind: South at 4.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Graphs

Location: Rock Creek, Portland, OR

Updated: 9:19 PM PDT

Temperature: 63.5 °F Dew Point: 54 °F Humidity: 72% Wind: East at 1.3 mph Pressure: 29.74 in Hourly Precipitation: 0.00 in Graphs

Location: Seminole Estates, Beaverton, OR

Updated: 9:19 PM PDT

Temperature: 64.2 °F Dew Point: 59 °F Humidity: 84% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Graphs

Location: Tualatin River Farm, Hillsboro, OR

Updated: 9:09 PM PDT

Temperature: 64.3 °F Dew Point: 58 °F Humidity: 81% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Graphs

Location: Longacre Park, Beaverton, OR

Updated: 9:19 PM PDT

Temperature: 64.6 °F Dew Point: 56 °F Humidity: 75% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Graphs

Location: Parkview, Portland, OR

Updated: 9:07 PM PDT

Temperature: 64.4 °F Dew Point: 58 °F Humidity: 79% Wind: Calm Pressure: 29.72 in Hourly Precipitation: - Graphs

Location: Whispering Woods Area, Beaverton, OR

Updated: 9:07 PM PDT

Temperature: 64.8 °F Dew Point: 55 °F Humidity: 71% Wind: Calm Pressure: 29.68 in Hourly Precipitation: - Graphs

Location: Intel Aloha Campus, Aloha, OR, Beaverton, OR

Updated: 9:15 PM PDT

Temperature: 64.4 °F Dew Point: 57 °F Humidity: 76% Wind: SSW at 4.0 mph Pressure: 29.69 in Hourly Precipitation: 0.00 in Graphs

Location: Councel Creek, Cornelius, OR

Updated: 9:20 PM PDT

Temperature: 63.9 °F Dew Point: 58 °F Humidity: 81% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Graphs

Location: Somerset Meadows Park, Beaverton, OR

Updated: 9:19 PM PDT

Temperature: 63.1 °F Dew Point: 57 °F Humidity: 81% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.01 in Graphs

Location: 209th / Parker Court, Aloha, OR

Updated: 9:15 PM PDT

Temperature: 65.9 °F Dew Point: 8 °F Humidity: 6% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Graphs

Location: Cornelius, CORNELIUS, OR

Updated: 9:19 PM PDT

Temperature: 64.3 °F Dew Point: 58 °F Humidity: 81% Wind: NW at 1.0 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Graphs

Location: Davis and 16th St., Cornelius, OR

Updated: 9:06 PM PDT

Temperature: 64.6 °F Dew Point: 58 °F Humidity: 78% Wind: Calm Pressure: 29.87 in Hourly Precipitation: - Graphs

Location: East of Cornelius Grade School, Cornelius, OR

Updated: 9:06 PM PDT

Temperature: 64.8 °F Dew Point: 58 °F Humidity: 79% Wind: ESE at 1.1 mph Pressure: 29.63 in Hourly Precipitation: - Graphs

Location: Helvetia, Hillsboro, OR

Updated: 9:19 PM PDT

Temperature: 62.2 °F Dew Point: 58 °F Humidity: 86% Wind: South at 2.0 mph Pressure: 29.83 in Hourly Precipitation: 0.02 in Graphs

Location: Cooper Mountain - Aloha North, Aloha, OR

Updated: 9:16 PM PDT

Temperature: 68.2 °F Dew Point: 55 °F Humidity: 62% Wind: North at - Pressure: 29.91 in Hourly Precipitation: 0.00 in Graphs

Location: Beaver Acres, Huber, OR

Updated: 9:19 PM PDT

Temperature: 65.5 °F Dew Point: 58 °F Humidity: 76% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Graphs

Location: Helvetia Oregon, Hillsboro, OR

Updated: 9:12 PM PDT

Temperature: 61.4 °F Dew Point: 58 °F Humidity: 89% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.01 in Graphs

Location: Hwy 26 and Cornell, Beaverton, OR

Updated: 9:10 PM PDT

Temperature: 65.5 °F Dew Point: 58 °F Humidity: 78% Wind: Calm Pressure: 29.81 in Hourly Precipitation: 0.00 in Graphs

Location: Farm near Meriwether Golf Course, Hillsboro, OR

Updated: 9:19 PM PDT

Temperature: 63.9 °F Dew Point: 58 °F Humidity: 81% Wind: Calm Pressure: 29.80 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 
849 PM PDT Tuesday Sep 1 2015 


Synopsis...a cold front will slowly move southward into southwest 
Washington and northwest Oregon overnight. It will bring a little 
light rain to the area. The southern part of the associated trailing 
upper low will slowly extend into southwest Washington and northwest 
Oregon Wednesday for more showers...and linger over the Pacific 
northwest Thursday. Energy on the west side of the upper low will 
drop down along the coast Thursday night then swing inland mainly 
south of our forecast area Friday. However...the colder air aloft 
will be more over our area Friday for a greater chance of afternoon 
and evening showers and thunderstorms. The low will move off to the 
east this weekend for improving weather...though another system is 
possible early next week. 


&& 


Update...satellite infrared imagery shows the upper portion of the 
front shearing ahead of the lower front. The surface front is now 
near the South Washington coast and is forecast to move inland over 
night. Do not expect too much rain overnight as the system shears but 
more convective showers are expected Wednesday afternoon as a cool trough 
settles into the area.NAM and GFS model soundings have differing 
solutions on the thermal profile with this system. The GFS is a 
little more unstable overall so will have to watch. But will keep 
threat of thunder for northern coastal and inland zones Wednesday afternoon 
through Wednesday evening. 


Previous discussion 
short term...light rain is dissipating as it moves slowly inland 
early this afternoon. The rain which dropped about 0.25 inches at 
Astoria this morning is now very light and do not think it will make 
it into the valley. Behind it are some light to moderate showers 
which are a bit more successfully moving inland and will likely be 
the best shot for any inland rain. Continued to dial back probability of precipitation in the 
valley through this evening. 


Shortwaves rotating around an upper low begin to arrive tonight and 
into Wednesday...increasing rain chances across the local forecast 
area. Combo of daytime heating and a decent shortwave will bring a 
slight threat of thunder to northern areas tomorrow afternoon with 
showers elsewhere. Freezing levels will be dropping...but do not 
think it will be cold enough to get small hail with showers or 
thunderstorms. 


Thursday and Friday are looking drier as the upper trough dives south 
of the area. Removed thunder mention Thursday due to most of the 
forcing being east of the area by afternoon. Thunder still looks 
possible Friday...but really only for the Cascades and even then 
probably close to the crest. 


With upper trough moving through...temperatures will be a bit cooler 
starting tomorrow and remain below normal through at least the end of 
the workweek with high temperatures around 70 degrees inland and 60 
to 65 along the coast. Inland low temperatures will also be 
significantly more comfortable with lows well below 60 degrees. Bowen 




Long term...Friday night through Tuesday. Better agreement in the 
forecast models today with respect to the movement of the upper 
trough through the region. Expect that it will continue to rotate 
through the region and east of the Cascades by late Friday or early 
Saturday. Even the European model (ecmwf)...which has been slower to advance the 
trough...establishes more northerly flow aloft by Saturday for 
increasingly improving conditions. Sunday will be dry and 
warmer...with maximum temperatures returning to around seasonal 
normals...or near 80 for the Willamette Valley. A weakening boundary 
may clip the SW Washington zones Monday...but expect any light 
precipitation to remain offshore. Another low pressure system may 
approach the region by Tuesday or Wednesday next week for another 
round of precipitation and cooler temperatures. Cullen 


&& 


Aviation...mostly VFR conditions tonight and Wednesday. The 
coast may see brief MVFR ceilings and visibilities due to light rain or mist 
through 16-18z Wednesday morning. Inland sites should not drop lower 
than a high end MVFR at worst and probably remain VFR with ceilings 
around 050. Showers will be more convective Wednesday afternoon with 
heavier showers resulting in a better chance for MVFR conditions. 


Kpdx and approaches...VFR although ceilings lower to 025-035 after 14z 
Wednesday as a weak front moves onshore. Tj/27 


&& 


Marine...a weak trough will move over the waters Wednesday before 
surface high pressure builds on Thursday. Low pressure over 
northern California will result in northerly winds Thursday afternoon through 
the weekend. The north winds will increase in the afternoons... 
especially south of Lincoln City. 


A surface low over the Gulf of Alaska...just offshore of the Dixon 
Entrance in Alaska is generating large swell across the NE 
Pacific this morning. Seas from buoys upstream of the Oregon 
waters suggests that the enp guidance is under-forecasting this 
swell 1 to 2 feet. Have therefore went a little above guidance for 
this swell and expect 10 to 11 feet seas in the waters late Wednesday 
afternoon and evening. Tj 


&& 


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


&& 




$$ 


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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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