Portland-Hillsboro, Oregon Weather Conditions

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Current Conditions

  • 77°
  • Partly Cloudy
  • Wind: Calm
  • Humidity: 34%
  • Visibility: 10.0 miles
  • Dew Point: 47°
  • Pressure: 29.94 in. -

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Next 12 Hours

8  pm
11  pm
2  am
5  am
8  am
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
72°
63°
59°
61°
61°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Partly Cloudy
  • High: 81 °
  • Low: 59 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 81 °
  • Low: 55 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 86 °
  • Low: 57 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 86 °
  • Low: 54 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 90 °
  • Low: 57 °
  • Partly Cloudy

Forecast for Portland-Hillsboro, Oregon

Updated: 8:00 PM PDT on August 21, 2014

  • Thursday

    Partly cloudy. High of 81F. Winds from the NW at 5 to 10 mph.

  • Thursday Night

    Clear. Low of 59F. Winds from the NW at 5 to 10 mph.

  • Friday

    Partly cloudy in the morning, then clear. High of 81F. Winds less than 5 mph.

  • Friday Night

    Clear in the evening, then partly cloudy. Low of 55F. Winds from the NW at 5 to 10 mph.

  • Saturday

    Partly cloudy in the morning, then clear. High of 86F. Winds from the North at 5 to 10 mph.

  • Saturday Night

    Clear. Low of 57F. Winds from the NW at 5 to 10 mph.

  • Sunday

    Partly cloudy. High of 86F. Winds from the NNW at 5 to 10 mph.

  • Sunday Night

    Mostly cloudy. Low of 54F. Winds from the WNW at 5 to 10 mph.

  • Monday

    Partly cloudy in the morning, then clear. High of 90F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 57F. Winds from the NW at 5 to 10 mph.

  • Tuesday

    Clear in the morning, then partly cloudy. High of 93F. Winds from the NNW at 5 to 10 mph.

  • Tuesday Night

    Clear. Low of 59F. Winds from the NW at 5 to 10 mph.

  • Wednesday

    Mostly cloudy. High of 88F. Winds from the NW at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 55F. Winds from the WNW at 5 to 10 mph.

  • Thursday

    Clear. High of 81F. Winds from the NW at 5 to 10 mph.

  • Thursday Night

    Clear. Low of 50F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 79F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 50F. Winds less than 5 mph.

  • Saturday

    Partly cloudy. High of 77F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy. Low of 50F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 73F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy. Low of 50F. Winds less than 5 mph.

  • Monday

    Clear. High of 75F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: CWS - Orion, Hillsboro, OR

Updated: 6:54 PM PDT

Temperature: 77.7 °F Dew Point: 47 °F Humidity: 33% Wind: NW at 2.4 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

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

Updated: 6:45 PM PDT

Temperature: 78.7 °F Dew Point: 50 °F Humidity: 37% Wind: North at 5.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Jackson School, Hillsboro, OR

Updated: 6:54 PM PDT

Temperature: 79.7 °F Dew Point: 53 °F Humidity: 39% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Connell Avenue, Hillsboro, OR

Updated: 6:56 PM PDT

Temperature: 77.5 °F Dew Point: 50 °F Humidity: 38% Wind: NW at 1.6 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Wendy's Weather, Hillsboro, OR

Updated: 6:55 PM PDT

Temperature: 75.6 °F Dew Point: 51 °F Humidity: 42% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Lely Park, Hillsboro, OR

Updated: 6:54 PM PDT

Temperature: 74.9 °F Dew Point: 54 °F Humidity: 48% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Near Century High School, Hillsboro, OR

Updated: 6:52 PM PDT

Temperature: 76.8 °F Dew Point: 50 °F Humidity: 38% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Edwards Meadows, Hillsboro, OR

Updated: 6:49 PM PDT

Temperature: 75.6 °F Dew Point: 54 °F Humidity: 48% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Baseline / Cornelius Pass, Aloha, OR

Updated: 6:56 PM PDT

Temperature: 79.6 °F Dew Point: 50 °F Humidity: 36% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Rock Creek, Portland, OR

Updated: 6:55 PM PDT

Temperature: 74.3 °F Dew Point: 46 °F Humidity: 36% Wind: ESE at 1.1 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Working Theory Farm, Hillsboro, OR

Updated: 6:50 PM PDT

Temperature: 78.5 °F Dew Point: - Humidity: 37% Wind: SSE at 3.5 mph Pressure: 29.73 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Seminole Estates, Beaverton, OR

Updated: 6:56 PM PDT

Temperature: 80.5 °F Dew Point: 52 °F Humidity: 37% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Whispering Woods Area, Beaverton, OR

Updated: 6:52 PM PDT

Temperature: 78.1 °F Dew Point: 50 °F Humidity: 38% Wind: Calm Pressure: 29.79 in Hourly Precipitation: - Heat Index: 79 °F Graphs

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

Updated: 6:45 PM PDT

Temperature: 78.5 °F Dew Point: 47 °F Humidity: 33% Wind: West at 2.0 mph Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Somerset Meadows Park, Beaverton, OR

Updated: 6:56 PM PDT

Temperature: 77.5 °F Dew Point: 46 °F Humidity: 33% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: 209th / Parker Court, Aloha, OR

Updated: 6:56 PM PDT

Temperature: 78.1 °F Dew Point: 52 °F Humidity: 40% Wind: WNW at 1.3 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Cornelius, CORNELIUS, OR

Updated: 6:56 PM PDT

Temperature: 76.4 °F Dew Point: 52 °F Humidity: 43% Wind: North at 1.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Helvetia, Hillsboro, OR

Updated: 6:56 PM PDT

Temperature: 75.0 °F Dew Point: 51 °F Humidity: 43% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Hwy 26 and Cornell, Beaverton, OR

Updated: 6:50 PM PDT

Temperature: 76.1 °F Dew Point: 49 °F Humidity: 38% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Bethany, Portland, OR

Updated: 6:45 PM PDT

Temperature: 79.7 °F Dew Point: 51 °F Humidity: 37% Wind: North at 4.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Farm near Meriwether Golf Course, Hillsboro, OR

Updated: 6:56 PM PDT

Temperature: 75.6 °F Dew Point: 52 °F Humidity: 43% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: APRSWXNET Aloha OR US, Beaverton, OR

Updated: 6:11 PM PDT

Temperature: 82 °F Dew Point: 51 °F Humidity: 34% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: at Harleman Park, Cornelius, OR

Updated: 6:52 PM PDT

Temperature: 78.4 °F Dew Point: 52 °F Humidity: 40% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: 209th & Farmington Aloha, OR

Updated: 6:52 PM PDT

Temperature: 82.1 °F Dew Point: 51 °F Humidity: 34% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Aloha, OR

Updated: 6:56 PM PDT

Temperature: 78.4 °F Dew Point: 45 °F Humidity: 31% Wind: SSE at 1.5 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Conifer Ridge, Beaverton, OR

Updated: 6:56 PM PDT

Temperature: 75.6 °F Dew Point: 50 °F Humidity: 41% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Terra Linda, Portland, OR

Updated: 6:52 PM PDT

Temperature: 75.8 °F Dew Point: 50 °F Humidity: 41% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: 170th and Sugar Plum Ln, Beaverton, OR

Updated: 6:56 PM PDT

Temperature: 75.4 °F Dew Point: 46 °F Humidity: 35% Wind: Calm Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
231 PM PDT Thursday Aug 21 2014 


Synopsis...northwest flow will continue over the region through the 
rest of this week. An upper level low pressure dropping southeast 
across the inland northwest tonight could result in a some light 
precipitation through Friday morning and a slim threat of 
thunderstorms across the South Washington Cascades Friday afternoon. 
Northwest to north flow aloft continues over the weekend maintaining 
onshore low-level flow and near normal or slightly below normal 
daytime temperatures. High pressure strengthens just offshore early 
next week...which may result in some light offshore low-level flow. 


&& 


Short term...today through Saturday...upper low sitting over western 
British Columbia this afternoon and will move south through Friday. 
Could see some showers along the north Oregon and southwest 
Washington coast this evening as the low moves into western 
Washington. Still someuncertainty in drizzle forecast for overnight 
and into Friday morning with NAM showing more widespread moisture so 
decided to keep drizzleto marine...coastal...and southern Willamette 
Valley and Cascades where moisture is highest across the models. 


Later Friday...models have shifted the center of the low just a bit 
south...over the Oregon Idaho boreder by 00z Saturday. Best 
instability still looks like it will remain over central and eastern 
Washington so thunder chances in our area should stay near the Montana 
Adams area. Kept forecast consistent from this morning's update with 
a slight Chace of thunder just over eastern Skamania County for the 
local forecast area with showers in the north Oregon cascadse. Precipitation 
chances drop off quickly Saturday as the upper low moves off to the 
east. With winds out of the north and minimal afternoon sky 
cover...temperatures will warm through the weekend as high pressure moves 
back into the area. Bowen 


Long term...upper level ridging will move onshore allowing 
temperatures to increase slightly above seasonal norms for the 
beginning part of next week. As the ridge begins to breakdown and 
become more zonal we will see an increase in low and middle level 
moisture. This will provide for an increase in cloud cover for the 
latter part of next week. Do not expect any precipitation in the 
near future. /64 


&& 


Aviation...VFR conditions this afternoon. Middle-level clouds will 
increase tonight as a weak front moves over the area. The coast 
may see some drizzle after 08z...but do not think there will be 
much drizzle inland. Forecast confidence on ceiling height is 
low...but currently think mainly MVFR ceilings for the coast and 
along the lower Columbia River valley...including kttd. VFR 
conditions otherwise through Friday morning. 


Kpdx and approaches...VFR today with some middle and high level 
clouds. Expect MVFR ceilings Friday morning around 15z...and possibly 
some drizzle as remnants of a weak front moves across the area. Tj 


&& 


Marine...a weak front will decay as it moves across the waters 
this evening. High pressure will rebuild Friday and northerly 
winds will return. High pressure will hold over the NE Pacific 
into next week. A thermal trough over northern California will 
result in a tighter pressure gradient over the waters at times 
especially in the afternoons and evenings...and S of Cascade Head. 
Tj 


&& 


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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