Portland-Hillsboro, Oregon Weather Conditions

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Current Conditions

  • 74°
  • Haze
  • Wind: West 5 mph
  • Humidity: 50%
  • Visibility: 8.0 miles
  • Dew Point: 54°
  • Pressure: 29.70 in. 0

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Next 12 Hours

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5  pm
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11  pm
2  am
Chance of Rain
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73°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Chance of Rain
  • High: 82 °
  • Low: 54 °
  • Chance of Rain
  • Thursday
  • Chance of Rain
  • High: 79 °
  • Low: 54 °
  • Chance of Rain
  • Friday
  • Partly Cloudy
  • High: 79 °
  • Low: 52 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 86 °
  • Low: 54 °
  • Partly Cloudy
  • Sunday
  • Clear
  • High: 88 °
  • Low: 54 °
  • Clear

Forecast for Portland-Hillsboro, Oregon

Updated: 2:00 PM PDT on September 17, 2014

  • Wednesday

    Overcast with a chance of rain. High of 82F. Winds from the NNW at 5 to 10 mph. Chance of rain 40%.

  • Wednesday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 54F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday

    Overcast with a chance of rain. High of 79F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Overcast with a chance of rain. Low of 54F. Winds from the NNW at 5 to 10 mph. Chance of rain 20%.

  • Friday

    Partly cloudy. High of 79F. Winds from the NNW at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Fog overnight. Low of 52F. Winds from the NNW 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 shifting to the ENE in the afternoon.

  • Saturday Night

    Clear. Low of 54F. Winds less than 5 mph.

  • Sunday

    Clear. High of 88F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 54F. Winds less than 5 mph.

  • Monday

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

  • Monday Night

    Clear. Low of 52F. Winds less than 5 mph.

  • Tuesday

    Mostly cloudy with a chance of rain. High of 77F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Tuesday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 52F. Winds less than 5 mph. Chance of rain 50% with rainfall amounts near 0.3 in. possible.

  • Wednesday

    Partly cloudy with a chance of rain. High of 81F. Breezy. Winds from the South at 10 to 20 mph. Chance of rain 40%.

  • Wednesday Night

    Partly cloudy with a chance of rain. Low of 54F. Winds from the South at 5 to 10 mph. Chance of rain 50%.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 84F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm. Low of 54F. Winds less than 5 mph. Chance of rain 20%.

  • Friday

    Partly cloudy. High of 82F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 54F. Winds less than 5 mph.

  • Saturday

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

  • Saturday Night

    Partly cloudy. Low of 46F. Winds less than 5 mph.

  • Sunday

    Clear. High of 77F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: CWS - Orion, Hillsboro, OR

Updated: 2:34 PM PDT

Temperature: 74.8 °F Dew Point: 53 °F Humidity: 46% Wind: SW at 2.1 mph Pressure: 29.67 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

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

Updated: 2:22 PM PDT

Temperature: 74.7 °F Dew Point: 56 °F Humidity: 52% Wind: North at 2.0 mph Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Jackson School, Hillsboro, OR

Updated: 2:34 PM PDT

Temperature: 75.4 °F Dew Point: 58 °F Humidity: 55% Wind: Calm Pressure: 29.66 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Connell Avenue, Hillsboro, OR

Updated: 2:36 PM PDT

Temperature: 75.4 °F Dew Point: 56 °F Humidity: 51% Wind: West at 2.2 mph Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Wendy's Weather, Hillsboro, OR

Updated: 2:35 PM PDT

Temperature: 75.9 °F Dew Point: 58 °F Humidity: 53% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Lely Park, Hillsboro, OR

Updated: 2:35 PM PDT

Temperature: 74.2 °F Dew Point: 59 °F Humidity: 59% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Near Century High School, Hillsboro, OR

Updated: 2:35 PM PDT

Temperature: 75.6 °F Dew Point: 55 °F Humidity: 49% Wind: Calm Pressure: 31.01 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Edwards Meadows, Hillsboro, OR

Updated: 2:28 PM PDT

Temperature: 74.4 °F Dew Point: 60 °F Humidity: 61% Wind: North at 1.0 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Baseline / Cornelius Pass, Aloha, OR

Updated: 2:36 PM PDT

Temperature: 76.0 °F Dew Point: 58 °F Humidity: 54% Wind: Calm Pressure: 29.72 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Rock Creek, Portland, OR

Updated: 2:34 PM PDT

Temperature: 75.7 °F Dew Point: 54 °F Humidity: 47% Wind: SSW at 2.0 mph Pressure: 29.59 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Seminole Estates, Beaverton, OR

Updated: 2:36 PM PDT

Temperature: 77.0 °F Dew Point: 57 °F Humidity: 50% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Rock Creek - Bethany Lake, Portland, OR

Updated: 2:36 PM PDT

Temperature: 76.1 °F Dew Point: 53 °F Humidity: 45% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Longacre Park, Beaverton, OR

Updated: 2:36 PM PDT

Temperature: 72.7 °F Dew Point: 56 °F Humidity: 55% Wind: Calm Pressure: 29.71 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Whispering Woods Area, Beaverton, OR

Updated: 2:32 PM PDT

Temperature: 77.0 °F Dew Point: 57 °F Humidity: 50% Wind: SSW at 2.2 mph Pressure: 29.55 in Hourly Precipitation: - Heat Index: 79 °F Graphs

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

Updated: 2:36 PM PDT

Temperature: 75.6 °F Dew Point: 54 °F Humidity: 48% Wind: SSW at 1.0 mph Pressure: 29.55 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Councel Creek, Cornelius, OR

Updated: 2:36 PM PDT

Temperature: 74.7 °F Dew Point: 58 °F Humidity: 56% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Somerset Meadows Park, Beaverton, OR

Updated: 2:36 PM PDT

Temperature: 75.7 °F Dew Point: 55 °F Humidity: 48% Wind: Calm Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: 209th / Parker Court, Aloha, OR

Updated: 2:36 PM PDT

Temperature: 74.0 °F Dew Point: 57 °F Humidity: 56% Wind: WSW at 1.1 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Cornelius, CORNELIUS, OR

Updated: 2:36 PM PDT

Temperature: 76.3 °F Dew Point: 58 °F Humidity: 54% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Helvetia, Hillsboro, OR

Updated: 2:36 PM PDT

Temperature: 74.5 °F Dew Point: 57 °F Humidity: 55% Wind: West at 3.0 mph Pressure: 29.69 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Helvetia Oregon, Hillsboro, OR

Updated: 2:36 PM PDT

Temperature: 74.0 °F Dew Point: 57 °F Humidity: 56% Wind: Calm Pressure: 29.24 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Hwy 26 and Cornell, Beaverton, OR

Updated: 2:30 PM PDT

Temperature: 75.3 °F Dew Point: 57 °F Humidity: 53% Wind: Calm Pressure: 29.66 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Mason Hill, North Plains, OR

Updated: 2:30 PM PDT

Temperature: 74.5 °F Dew Point: 36 °F Humidity: 25% Wind: SW at 2.2 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Bethany, Portland, OR

Updated: 2:34 PM PDT

Temperature: 75.7 °F Dew Point: 59 °F Humidity: 56% Wind: West at 2.0 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Farm near Meriwether Golf Course, Hillsboro, OR

Updated: 2:36 PM PDT

Temperature: 75.0 °F Dew Point: 59 °F Humidity: 58% Wind: Calm Pressure: 29.66 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: at Harleman Park, Cornelius, OR

Updated: 2:33 PM PDT

Temperature: 76.7 °F Dew Point: 57 °F Humidity: 51% Wind: Calm Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: 209th & Farmington Aloha, OR

Updated: 2:21 PM PDT

Temperature: 77.0 °F Dew Point: 60 °F Humidity: 55% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Panorama Point (Washington Cty), Cornelius, OR

Updated: 2:36 PM PDT

Temperature: 73.7 °F Dew Point: 58 °F Humidity: 59% Wind: NNW at 3.0 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: 160th and Westwind Dr., Beaverton, OR

Updated: 2:36 PM PDT

Temperature: 76.0 °F Dew Point: 59 °F Humidity: 55% Wind: Calm Pressure: 29.50 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Conifer Ridge, Beaverton, OR

Updated: 2:36 PM PDT

Temperature: 75.1 °F Dew Point: 58 °F Humidity: 55% Wind: Calm Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Terra Linda, Portland, OR

Updated: 2:29 PM PDT

Temperature: 74.3 °F Dew Point: 56 °F Humidity: 54% Wind: SW at 1.0 mph Pressure: 29.67 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: South Hills, Cornelius, OR

Updated: 2:34 PM PDT

Temperature: 77.1 °F Dew Point: 59 °F Humidity: 54% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

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

Updated: 2:36 PM PDT

Temperature: 74.8 °F Dew Point: 54 °F Humidity: 48% Wind: WNW at 1.3 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Forest Grove Honda Across From Ace Hardware, Forest Grove, OR

Updated: 2:14 PM PDT

Temperature: 75.6 °F Dew Point: 52 °F Humidity: 44% Wind: SSE at 1.0 mph Pressure: 29.59 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
930 am PDT Wednesday Sep 17 2014 


Synopsis...a low pressure system currently off the California coast 
will move produce occasional sprinkles and light rain showers across 
the area through Thursday. Coastal locations are likely to see more 
frequent bouts of wet weather during this period. While hazy skies 
will continue to linger over the Willamette Valley...onshore flow 
will keep the worst of the smoke from the 36 pit and deception 
complex fires over the Cascades and points east. High pressure and 
offshore flow will build over the region towards the weekend so 
expect smokier conditions to return to the Willamette Valley and 
temperatures possibly approaching 90f again. 


&& 


Update...water vapor satellite imagery reveals a large upper level 
trough off the Oregon/California coast...placing the region in deep 
south to southwesterly flow aloft. Infrared and visible satellite 
imagery show plenty of middle to upper level clouds streaming 
northeastward across the region. A couple rounds of high based 
showers have moved northward across western Oregon this morning. 
Surface observations and Doppler radar indicate most of these showers 
consist of virga. However...every now and again...a stronger band of 
showers is produces sprinkles at the surface. These high based 
showers have been slightly more persistent closer to the coast where 
an occasional hundredth of an inch has been measured so far. 
Overall...expect this general pattern to continue through at least 
early to middle afternoon. Weather grids were adjusted accordingly. 


This mornings ksle sounding indicates a layer of instability aloft. 
This is likely responsible for the high based showers observed so 
far. While it has not been deep enough for thunderstorms...cannot 
rule out a stray lightning strike or two this afternoon or 
evening...especially across our southeastern zones so will continue 
the slight chance mention inherited. 


Short term model guidance suggests current shower activity over the 
northern California coast will ride northward into the forecast area 
late this afternoon. As a result...the weather mention was switched over 
from brief sprinkles to a mention of showers for late this afternoon 
and evening when it appears interior locations will stand a better 
chance of seeing measurable rain. However...rain chances will 
continue to be highest toward the coast...and likely lowest towards 
the Cascades. The NAM and GFS continue to suggest a low level front 
will focus moisture and rain chances Thursday morning across our 
northwestern zones so probability of precipitation were nudged upwards during this period. 
It should be noted that the ec produces significantly less quantitative precipitation forecast 
across the area over the next 24 hours than the GFS and NAM...which 
is not terribly surprising given the splitting nature of this storm 
system. This remains the main reason we do not have higher probability of precipitation in 
the forecast than perhaps it would appear we should given NAM and 
GFS quantitative precipitation forecast fields. /Neuman 


Previous discussion below... 


Short term...a low pressure system is centered off the southern 
Oregon and northern California coast this morning. It has spread some 
light moisture and a few showers across parts of northwest Oregon and 
southwest Washington overnight. The models indicate some more light 
moisture and a few showers will continue to spread in from the 
southwest across our forecast area today...though amounts will be 
light. The expected cloud cover will tend to keep temperatures in the 75 to 
80 range again today across the interior. 


The low will approach the coast this afternoon...and a stronger area 
of vorticity and moisture will likely spread in mainly this evening 
and overnight tonight as the low begins to move onshore. Will have 
the highest probability of precipitation during that time with chance in many areas and some 
small areas of likely probability of precipitation especially the Southern Mountain areas. 


The main low center then tends to move south into California as it 
moves inland on Thursday. However there is enough moisture in 
combination with daytime heating for an increase in showers in the 
afternoon from the Coast Range eastward. Have decided to go 
scattered on the shower coverage Thursday afternoon except likely in 
the Oregon Cascades. 


The models show some instability both this afternoon and Thursday 
afternoon in the Oregon Cascades...so have a slight chance of thunder 
in that area both days. 


An upper ridge builds in Thursday night and Friday for drying and 
slowly warming weather. There is enough onshore flow and left over 
moisture for a fair amount of morning low clouds Friday morning... 
that may hang around through much of the day in the mountains from 
about Portland north...finally clearing in the evening. Temperatures will 
start to rise a bit Friday...but the more substantial warming will 
hold off until the weekend. 


Smoke from the 36 pit and deception complex fires will tend to spread 
out to the north and northeast today...then more to the east Thursday 
and Friday. East winds may return this weekend which would bring the 
smoke back into the Willamette Valley again. Tolleson 


Long term...no changes. Previous discussion follows...Friday night 
through Tuesday...the GFS...dgex...and European model (ecmwf) models all show a 
return to easterly flow on Saturday which will warm temperatures 
across the area. This warm up will only last through Sunday...as 
winds shift back to the west from an upper-level trough and 
associated cyclone deepening over the Gulf of Alaska. This will cool 
temperatures and bring the marine layer back in at night Monday and 
Tuesday. -McCoy 
&& 


Aviation...widespread VFR persists under light winds and variable 
middle and high clouds. Some light rain pushed along the coast this 
morning...but expect an increased threat for showers through this 
afternoon as middle level clouds increase. 


Smoke from the 36-pit fire continues to drift to the east and NE. 
Will see smoke continue in East Columbia gorge...Upper Hood River 
Valley and around Montana Hood...with some smoke trapped settling in 
valleys to east and north of the fire. With S winds aloft over next few 
days...smoke from fires over SW Oregon and northwest California will 
drift north to NE...affecting slantwise visibility from Cascades 
eastward. 


Kpdx and approaches...VFR continues with variable high clouds this 
morning. Increasing middle level clouds today...with ceilings likely 
forming in the 4000-5000 feet range this afternoon/evening with 
increasing chances for a shower or two. Cullen 


&& 


Marine...fairly benign conditions continue over the waters for 
the next few days as weak low pressure will maintain S to southeast wind less 
than 15 knots. There will be a mix of wave trains with varying 
periods...from the northwest...west and SW. Expect northwest swell to dominate 
today at around 15 seconds. Overall seas running 6 to 8 feet...with 
highest further offshore. 


High pressure will rebuild over the waters Friday and Sat...with thermal 
low pressure over the coast and coastal waters. This will bring 
another round of east to NE winds to the waters this weekend with 
winds possibly gusting to 25 knots on Sat and Sat night. Cullen 


&& 


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 as the forecast area. 






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