Hillsboro, Oregon Weather Conditions

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Current Conditions

  • 51°
  • Overcast
  • Wind: Calm
  • Humidity: 89%
  • Visibility: 10.0 miles
  • Dew Point: 48°
  • Pressure: 30.38 in. -

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Next 12 Hours

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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Chance of Rain
  • High: 52 °
  • Low: 48 °
  • Chance of Rain
  • Tuesday
  • Chance of Rain
  • High: 52 °
  • Low: 39 °
  • Chance of Rain
  • Wednesday
  • Rain
  • High: 46 °
  • Low: 36 °
  • Rain
  • Thursday
  • Chance of Rain
  • High: 48 °
  • Low: 41 °
  • Chance of Rain
  • Friday
  • Chance of Rain
  • High: 48 °
  • Low: 43 °
  • Chance of Rain

Forecast for Hillsboro, Oregon

Updated: 7:00 AM PST on December 22, 2014

  • Monday

    Overcast with a chance of rain. High of 52F. Winds less than 5 mph. Chance of rain 40%.

  • Monday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 48F. Winds less than 5 mph. Chance of rain 40%.

  • Tuesday

    Overcast with a chance of rain. Fog early. High of 52F. Winds from the SSE at 5 to 15 mph. Chance of rain 60%.

  • Tuesday Night

    Overcast with rain. Fog overnight. Low of 39F. Winds from the SW at 5 to 15 mph. Chance of rain 90% with rainfall amounts near 0.3 in. possible.

  • Wednesday

    Overcast with rain. High of 46F. Winds from the SW at 5 to 15 mph. Chance of rain 100% with rainfall amounts near 0.4 in. possible.

  • Wednesday Night

    Overcast with a chance of rain. Fog overnight. Low of 36F. Winds less than 5 mph.

  • Thursday

    Overcast with a chance of rain. High of 48F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Thursday Night

    Overcast in the evening, then mostly cloudy with a chance of rain. Low of 41F. Winds less than 5 mph. Chance of rain 40%.

  • Friday

    Overcast with a chance of rain. Fog early. High of 48F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.

  • Friday Night

    Overcast with a chance of rain. Low of 43F. Winds from the SSW at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.4 in. possible.

  • Saturday

    Partly cloudy with a chance of rain. High of 46F. Winds from the WSW at 10 to 15 mph. Chance of rain 40%.

  • Saturday Night

    Overcast with a chance of rain. Low of 36F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Sunday

    Partly cloudy. High of 45F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy. Low of 30F. Winds less than 5 mph.

  • Monday

    Clear. High of 45F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 32F. Winds from the East at 5 to 10 mph.

  • Tuesday

    Partly cloudy. High of 41F. Winds from the East at 5 to 10 mph.

  • Tuesday Night

    Partly cloudy. Low of 28F. Winds from the East at 5 to 10 mph.

  • Wednesday

    Mostly cloudy. High of 43F. Winds from the ESE at 5 to 10 mph.

  • Wednesday Night

    Mostly cloudy with a chance of snow. Fog overnight. Low of 30F. Winds less than 5 mph. Chance of snow 30%.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 45F. Winds less than 5 mph. Chance of rain 50% with rainfall amounts near 0.2 in. possible.

  • Thursday Night

    Clear. Fog overnight. Low of 30F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Farm near Meriwether Golf Course, Hillsboro, OR

Updated: 11:48 AM PST

Temperature: 50.0 °F Dew Point: 49 °F Humidity: 95% Wind: South at 2.0 mph Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: South Hills, Cornelius, OR

Updated: 11:48 AM PST

Temperature: 51.0 °F Dew Point: 50 °F Humidity: 96% Wind: Calm Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 11:48 AM PST

Temperature: 48.3 °F Dew Point: 48 °F Humidity: 100% Wind: SE at 2.0 mph Pressure: 30.35 in Hourly Precipitation: 0.01 in Windchill: 48 °F Graphs

Location: Edwards Meadows, Hillsboro, OR

Updated: 11:35 AM PST

Temperature: 51.2 °F Dew Point: 49 °F Humidity: 93% Wind: Calm Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Iowa Hill, Cornelius, OR

Updated: 11:46 AM PST

Temperature: 50.0 °F Dew Point: 48 °F Humidity: 94% Wind: North at 1.0 mph Pressure: 28.83 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Hillsboro OR US, Cornelius, OR

Updated: 11:10 AM PST

Temperature: 50 °F Dew Point: 49 °F Humidity: 96% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Bentley Orchards, Hillsboro, OR

Updated: 11:41 AM PST

Temperature: 53.2 °F Dew Point: 48 °F Humidity: 84% Wind: Calm Pressure: 30.42 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Copper Mountain, Aloha, OR

Updated: 11:48 AM PST

Temperature: 51.8 °F Dew Point: 52 °F Humidity: 99% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: 209th & Farmington Aloha, OR

Updated: 11:44 AM PST

Temperature: 52.3 °F Dew Point: 50 °F Humidity: 93% Wind: Calm Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Lely Park, Hillsboro, OR

Updated: 11:48 AM PST

Temperature: 52.2 °F Dew Point: 49 °F Humidity: 88% Wind: Calm Pressure: 30.35 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Conifer Ridge, Beaverton, OR

Updated: 11:24 AM PST

Temperature: 50.6 °F Dew Point: 37 °F Humidity: 59% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Hillsboro OR US, Hillsboro, OR

Updated: 11:01 AM PST

Temperature: 50 °F Dew Point: 49 °F Humidity: 96% Wind: NNE at 1 mph Pressure: 30.39 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: 209th / Parker Court, Aloha, OR

Updated: 11:48 AM PST

Temperature: 50.4 °F Dew Point: -4 °F Humidity: - Wind: Calm Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Near Century High School, Hillsboro, OR

Updated: 11:44 AM PST

Temperature: 52.3 °F Dew Point: 50 °F Humidity: 92% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Northeast Meadow Lane, Hillsboro, OR

Updated: 11:46 AM PST

Temperature: 51.6 °F Dew Point: 51 °F Humidity: 99% Wind: North at - Pressure: 30.38 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Cooper Mountain, Beaverton, OR

Updated: 11:43 AM PST

Temperature: 49.6 °F Dew Point: 49 °F Humidity: 99% Wind: NNW at 1.7 mph Pressure: 30.04 in Hourly Precipitation: - Windchill: 50 °F Graphs

Location: Southwest Blooming Fern Hill Road, Cornelius, OR

Updated: 11:46 AM PST

Temperature: 49.6 °F Dew Point: 50 °F Humidity: 100% Wind: North at - Pressure: 30.21 in Hourly Precipitation: - Windchill: 50 °F Graphs

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

Updated: 11:39 AM PST

Temperature: 50.7 °F Dew Point: 49 °F Humidity: 93% Wind: ESE at 4.0 mph Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Aloha OR US, Beaverton, OR

Updated: 10:56 AM PST

Temperature: 52 °F Dew Point: 48 °F Humidity: 86% Wind: Calm Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Connell Avenue, Hillsboro, OR

Updated: 11:48 AM PST

Temperature: 52.3 °F Dew Point: 47 °F Humidity: 83% Wind: ESE at 1.6 mph Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Baseline / Cornelius Pass, Aloha, OR

Updated: 11:48 AM PST

Temperature: 52.1 °F Dew Point: 49 °F Humidity: 90% Wind: Calm Pressure: 30.40 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Renaissance Point 2, Beaverton, OR

Updated: 11:40 AM PST

Temperature: 48.4 °F Dew Point: 48 °F Humidity: 99% Wind: Calm Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: at Harleman Park, Cornelius, OR

Updated: 11:47 AM PST

Temperature: 51.0 °F Dew Point: 47 °F Humidity: 87% Wind: Calm Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Jackson School, Hillsboro, OR

Updated: 11:40 AM PST

Temperature: 53.2 °F Dew Point: 50 °F Humidity: 89% Wind: WNW at 1.7 mph Pressure: 30.20 in Hourly Precipitation: - Windchill: - Graphs

Location: Councel Creek, Cornelius, OR

Updated: 11:48 AM PST

Temperature: 49.8 °F Dew Point: 48 °F Humidity: 93% Wind: SE at 1.0 mph Pressure: 30.35 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: East of Cornelius Grade School, Cornelius, OR

Updated: 11:39 AM PST

Temperature: 51.6 °F Dew Point: 49 °F Humidity: 92% Wind: NNW at 4.2 mph Pressure: 30.21 in Hourly Precipitation: - Windchill: - Graphs

Location: Jackson School, Hillsboro, OR

Updated: 11:48 AM PST

Temperature: 51.4 °F Dew Point: 49 °F Humidity: 93% Wind: Calm Pressure: 30.35 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Cornelius, CORNELIUS, OR

Updated: 11:48 AM PST

Temperature: 50.6 °F Dew Point: 49 °F Humidity: 94% Wind: Calm Pressure: 30.37 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Cooper Mountain, Beaverton, OR

Updated: 11:46 AM PST

Temperature: 48.3 °F Dew Point: 48 °F Humidity: 99% Wind: Calm Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Whispering Woods Area, Beaverton, OR

Updated: 11:44 AM PST

Temperature: 53.2 °F Dew Point: 49 °F Humidity: 85% Wind: ESE at 2.7 mph Pressure: 30.24 in Hourly Precipitation: - Windchill: - Graphs

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

Updated: 11:48 AM PST

Temperature: 53.1 °F Dew Point: 51 °F Humidity: 94% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Longacre Park, Beaverton, OR

Updated: 11:48 AM PST

Temperature: 52.7 °F Dew Point: 51 °F Humidity: 95% Wind: SSW at 2.7 mph Pressure: 30.39 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Seminole Estates, Beaverton, OR

Updated: 11:48 AM PST

Temperature: 54.0 °F Dew Point: 50 °F Humidity: 86% Wind: Calm Pressure: 30.54 in Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 11:35 AM PST

Temperature: 52.4 °F Dew Point: 49 °F Humidity: 88% Wind: Calm Pressure: 30.36 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Bald Peak, Hillsboro, OR

Updated: 11:44 AM PST

Temperature: 48.0 °F Dew Point: 47 °F Humidity: 97% Wind: East at 1.1 mph Pressure: 30.30 in Hourly Precipitation: - Windchill: 48 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
1014 am PST Monday Dec 22 2014 


Synopsis...precipitation has tapered off considerably this morning 
as an upper level ridge builds in the northeast Pacific and up 
into the Gulf of Alaska. This has weakened the stalled frontal 
boundary over central Oregon and is squeezing off the supply of 
moisture. The stalled frontal boundary will lift north again late 
today and tonight as a weak front and may produce some areas of light 
rain. The next cold front will move into western Washington on 
Tuesday and begin to affect the far north part of our forecast 
area...slowly sag farther south into our area Tuesday night...then 
sweep through SW Washington and northwest Oregon with a good shot of 
rain and lowering snow levels on Wednesday and early Wednesday night. 
Another disturbance will bring some showers to the area Thursday 
night and Friday. Then another decent system is likely by the 
weekend. Snow levels will be lowering during the second half of the 
week...possibly affecting the Cascade foothills and the Coast Range. 
&& 


Short term...upper level ridging is building over the NE Pacific and Pacific 
northwest today. The frontal boundary that was the focus of the heavy 
rainfall over the weekend stalled over the Lane County Cascades last 
night and brought some additional moderate rainfall. However the 
precipitation has tapered off considerably this morning as the 
boundary has weakened and the available moisture has waned. Low 
clouds and patchy fog formed over much of The Lowlands and along the 
coast early this morning. With the building high pressure and little in 
the way of low level flow expected today...the clouds will likely be 
slow to clear for the inland valleys. The ceilings should eventually 
lift somewhat...but the clouds may stay in place through most of the 
day. 


The stalled baroclinic zone is forecast to slowly lift north 
later today and tonight as a weak warm front ahead of the next 
system. The models have been persistent and coming into better 
agreement with the details of some areas of light rain spreading 
north through the area tonight into early Tuesday. Amounts will be 
quite light. 


The cold front with the next system will move into western Washington 
on Tuesday...brushing our far northern zones...especially north of 
Portland. This front sags very slow southward on Tuesday night...not 
making much southward progress. Then a trailing short wave on the 
tail of the front develops into a new low along the front that then 
sweeps through southwest Washington and northwest Oregon Wednesday 
and early Wednesday night for a good shot of rain. Rainfall amounts 
of a half inch or more are likely...with some areas around an inch. 
Snow levels will finally be falling to more seasonal values on 
Wednesday and Wednesday night...likely affecting the Cascade 
foothills and the coastal mountains. Snow amounts could reach Snow 
Advisory thresholds with this system in the Cascades. Pyle/Tolleson 
&& 


Long term...some showers will linger on Christmas day behind the 
rather vigorous Wednesday system. The models are now all showing a 
short wave dropping in from the northwest later Thursday night and 
Friday for more showers. Snow levels will remain near or a bit below 
seasonal values...with snow into the Cascade foothills and coastal 
mountains. The models are coming into better agreement for another 
cool system by early in the weekend for more rain and Cascade 
snow...with snow levels remaining more seasonal. The models are now 
showing more drying early next week with some east winds possible. 
For now have lowered probability of precipitation for early next week. Tolleson 
&& 


Hydrology...rivers are mostly receding this morning...and the Flood 
Watch has been cancelled. The only rivers remaining above flood stage 
are the Marys River near Philomath and the Luckiamute near Suver. 
These are receding very slowly at best and will remain above flood 
stage for a while today. Tolleson 
&& 


Aviation...just enough clearing took place early this morning to 
allow fairly widespread IFR ceilings/visibilities to develop in the 
Willamette Valley. Tops appear to be between 1000-1500 feet mean sea level. 
With incoming solar energy being as low as it gets all year...it 
may be a tall order to burn off the low clouds. High pressure will 
keep winds light and prevent much in the way of mixing. Therefore 
Willamette Valley terminals can expect IFR/low MVFR ceilings to 
persist to around 22z...or possibly all day. The coast is actually 
seeing better conditions due to weak offshore flow...mainly VFR. 
With low-level air mass remaining moist and winds remaining 
light...expect IFR to redevelop most areas overnight. Some 
-ra/-dz from a weak warm front may contribute to lower ceilings/visibilities 
overnight and early Tuesday morning. 


Kpdx and approaches...fog and low clouds have developed across the 
Portland metropolitan...with IFR ceilings/visibilities and tops around 012 per 
pilot weather reports. Improvement will be slow...perhaps to MVFR by 21z...then 
about a 60 percent chance of breakout by 23z. That said...there 
remains a 40 percent chance that IFR/low MVFR will linger all the 
way into the evening then persist overnight. Weagle 


&& 


Marine...high pressure leading to light winds over waters today. 
Warm front will lift north across the waters this afternoon and 
evening...with another ridge of high pressure poking northward 
from the California waters. Approaching cold front could push 
S winds to Small Craft Advisory criteria in our northern waters Tuesday afternoon and 
evening...but it will be marginal. Some models are developing low 
pressure along the front as it pushes across the S or/north California 
waters...while strong high pressure builds in behind the front. 
This could result in gusty north-northwest flow midweek. A bit of a break in 
the weather is expected Thursday into Friday...but models are starting to 
agree that a stronger low pressure/frontal system may push through the 
coastal waters later Friday into Sat. 


Residual swell from the storm systems in the Gulf of Alaska 
Friday/Sat continues to produce 10-13 feet seas with periods around 13 
seconds. Next swell front from a system near the Aleutians will 
arrive this evening...keeping west-northwest swell 10-13 feet through Tuesday. 
Therefore the Small Craft Advisory for seas will continue through Tuesday...possibly 
longer if low pressure develops near haida gwaii Tuesday as the 00z/12z 
GFS have been suggesting. Weagle 


&& 


Pqr watches/warnings/advisories... 
or...coastal Flood Advisory until 4 PM PST this afternoon for 
central Oregon coast-north Oregon coast. 


Washington...coastal Flood Advisory until 4 PM PST this afternoon for South 
Washington coast. 


Pz...Small Craft Advisory for hazardous seas until 6 PM PST Tuesday 
for coastal waters from Cape Shoalwater Washington to Florence or out 
60 nm. 


Small Craft Advisory for rough Columbia River bar until 6 PM 
PST 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. 
Commonly referred to as the forecast area. 






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