Hillsboro, Oregon Weather Conditions

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Current Conditions

  • 47°
  • Overcast
  • Wind: Calm
  • Humidity: 100%
  • Visibility: 3.0 miles
  • Dew Point: 47°
  • Pressure: 30.31 in. 0

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Chance of Rain
Chance of Rain
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
45°
46°
54°
57°
50°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Chance of Rain
  • High: 57 °
  • Low: 37 °
  • Chance of Rain
  • Thursday
  • Partly Cloudy
  • High: 55 °
  • Low: 34 °
  • Partly Cloudy
  • Friday
  • Fog
  • High: 54 °
  • Low: 36 °
  • Fog
  • Saturday
  • Partly Cloudy
  • High: 52 °
  • Low: 39 °
  • Partly Cloudy
  • Sunday
  • Chance of Rain
  • High: 52 °
  • Low: 45 °
  • Chance of Rain

Forecast for Hillsboro, Oregon

Updated: 7:00 AM PST on January 28, 2015

  • Wednesday

    Overcast with a chance of rain. Fog early. High of 57F. Winds less than 5 mph. Chance of rain 30%.

  • Wednesday Night

    Overcast in the evening, then mostly cloudy. Fog overnight. Low of 37F. Winds less than 5 mph.

  • Thursday

    Clear. Fog early. High of 55F. Winds from the NNE at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Fog overnight. Low of 34F. Winds from the NNE at 5 to 10 mph.

  • Friday

    Partly cloudy. Fog early. High of 54F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Fog overnight. Low of 36F. Winds less than 5 mph.

  • Saturday

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

  • Saturday Night

    Clear. Low of 39F. Winds less than 5 mph.

  • Sunday

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

  • Sunday Night

    Clear with a chance of rain. Fog overnight. Low of 45F. Winds from the SSE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Monday

    Partly cloudy with a chance of rain. Fog early. High of 52F. Winds from the SW at 5 to 10 mph. Chance of rain 40%.

  • Monday Night

    Clear. Low of 41F. Winds less than 5 mph.

  • Tuesday

    Partly cloudy. High of 52F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 34F. Winds less than 5 mph.

  • Wednesday

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

  • Wednesday Night

    Clear. Fog overnight. Low of 37F. Winds less than 5 mph.

  • Thursday

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

  • Thursday Night

    Clear. Fog overnight. Low of 37F. Winds less than 5 mph.

  • Friday

    Clear. Fog early. High of 57F. Winds from the ESE at 5 to 10 mph.

  • Friday Night

    Clear with a chance of rain. Fog overnight. Low of 41F. Winds less than 5 mph. Chance of rain 30%.

  • Saturday

    Clear with a chance of a thunderstorm. Fog early. High of 55F. Winds from the ESE at 5 to 10 mph. Chance of rain 40%.

  • Saturday Night

    Clear with a chance of a thunderstorm. Low of 41F. Winds less than 5 mph. Chance of rain 40%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Farm near Meriwether Golf Course, Hillsboro, OR

Updated: 6:09 AM PST

Temperature: 46.9 °F Dew Point: 47 °F Humidity: 99% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Tualatin River Farm, Hillsboro, OR

Updated: 6:05 AM PST

Temperature: 47.2 °F Dew Point: 47 °F Humidity: 99% Wind: Calm Pressure: 30.32 in Hourly Precipitation: 0.01 in Windchill: 47 °F Graphs

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

Updated: 6:09 AM PST

Temperature: 46.9 °F Dew Point: 47 °F Humidity: 100% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Edwards Meadows, Hillsboro, OR

Updated: 5:59 AM PST

Temperature: 47.2 °F Dew Point: 46 °F Humidity: 96% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Iowa Hill, Cornelius, OR

Updated: 6:06 AM PST

Temperature: 47.5 °F Dew Point: 46 °F Humidity: 95% Wind: Calm Pressure: 28.92 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Turner Creek II, Hillsboro, OR

Updated: 6:09 AM PST

Temperature: 46.9 °F Dew Point: 47 °F Humidity: 99% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Copper Mountain, Aloha, OR

Updated: 6:09 AM PST

Temperature: 47.1 °F Dew Point: 47 °F Humidity: 99% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: 209th & Farmington Aloha, OR

Updated: 6:04 AM PST

Temperature: 47.5 °F Dew Point: 47 °F Humidity: 99% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Cooper Mountain - Aloha North, Aloha, OR

Updated: 6:06 AM PST

Temperature: 46.9 °F Dew Point: 47 °F Humidity: 100% Wind: North at - Pressure: 30.38 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Lely Park, Hillsboro, OR

Updated: 6:05 AM PST

Temperature: 47.7 °F Dew Point: 46 °F Humidity: 94% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Conifer Ridge, Beaverton, OR

Updated: 6:09 AM PST

Temperature: 46.6 °F Dew Point: -7 °F Humidity: - Wind: Calm Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: 209th / Parker Court, Aloha, OR

Updated: 6:09 AM PST

Temperature: 46.8 °F Dew Point: -7 °F Humidity: - Wind: Calm Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Near Century High School, Hillsboro, OR

Updated: 6:07 AM PST

Temperature: 48.0 °F Dew Point: 48 °F Humidity: 97% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Northeast Meadow Lane, Hillsboro, OR

Updated: 6:05 AM PST

Temperature: 47.8 °F Dew Point: 48 °F Humidity: 100% Wind: North at - Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Cooper Mountain, Beaverton, OR

Updated: 6:00 AM PST

Temperature: 46.6 °F Dew Point: 46 °F Humidity: 99% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Windchill: 47 °F Graphs

Location: Southwest Blooming Fern Hill Road, Cornelius, OR

Updated: 6:05 AM PST

Temperature: 46.8 °F Dew Point: 46 °F Humidity: 96% Wind: North at - Pressure: 30.15 in Hourly Precipitation: - Windchill: 47 °F Graphs

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

Updated: 6:00 AM PST

Temperature: 47.1 °F Dew Point: 47 °F Humidity: 99% Wind: SE at 1.0 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: APRSWXNET Hillsboro OR US, Hillsboro, OR

Updated: 5:32 AM PST

Temperature: 48 °F Dew Point: 45 °F Humidity: 88% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Connell Avenue, Hillsboro, OR

Updated: 6:09 AM PST

Temperature: 47.7 °F Dew Point: 44 °F Humidity: 88% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Baseline / Cornelius Pass, Aloha, OR

Updated: 6:09 AM PST

Temperature: 48.0 °F Dew Point: 47 °F Humidity: 97% Wind: Calm Pressure: 30.35 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: APRSWXNET Beaverton OR US, Beaverton, OR

Updated: 5:31 AM PST

Temperature: 46 °F Dew Point: 46 °F Humidity: 100% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Renaissance Point 2, Beaverton, OR

Updated: 6:01 AM PST

Temperature: 46.9 °F Dew Point: 47 °F Humidity: 100% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: at Harleman Park, Cornelius, OR

Updated: 6:02 AM PST

Temperature: 47.2 °F Dew Point: 45 °F Humidity: 92% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Jackson School, Hillsboro, OR

Updated: 6:09 AM PST

Temperature: 46.6 °F Dew Point: 46 °F Humidity: 99% Wind: Calm Pressure: 30.15 in Hourly Precipitation: - Windchill: 47 °F Graphs

Location: Councel Creek, Cornelius, OR

Updated: 6:09 AM PST

Temperature: 46.7 °F Dew Point: 46 °F Humidity: 97% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: East of Cornelius Grade School, Cornelius, OR

Updated: 6:09 AM PST

Temperature: 46.8 °F Dew Point: 46 °F Humidity: 99% Wind: Calm Pressure: 30.16 in Hourly Precipitation: - Windchill: 47 °F Graphs

Location: Jackson School, Hillsboro, OR

Updated: 6:09 AM PST

Temperature: 47.3 °F Dew Point: 46 °F Humidity: 94% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Bald Peak, Hillsboro, OR

Updated: 5:57 AM PST

Temperature: 45.0 °F Dew Point: 45 °F Humidity: 99% Wind: Calm Pressure: 30.23 in Hourly Precipitation: - Windchill: 45 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
255 am PST Wednesday Jan 28 2015 


Synopsis...a weak stationary front over SW Washington and northwest Oregon this 
morning will continue to weaken today and lift back to the north. 
Another upper level ridge is expected to develop over the Pacific 
northwest later in the week and continue into the weekend for more 
dry weather. The next chance for rain is probably not until later 
Sunday and Monday. 


&& 


Short term...weak baroclinic zone from SW Washington Cascades across the northwest 
corner of Oregon early this morning is best evidenced by the light 
rainfall seen in surface observations over the region. 00z models 
continued to indicate the front lingering this morning before slowly 
lifting north later today and tonight. A weak surface low offshore is 
expected to help lift the boundary north today...and also provides a bit 
of low level moisture overrunning the front today...so will keep 
probability of precipitation in chance category through the afternoon and into the evening. 


Low level flow transitions to offshore tonight as a weak surface 
ridge of high pressure is expected to build down east of the Cascades. This 
will gradually bring some drying to lower levels tonight and 
Thursday...finally bringing an end to the chances for showers. A weak 
upper level low caught in the ridge will slowly wander across 
tonight and Wednesday...keeping some middle and high clouds over the region. 
The clouds may hinder fog development tonight and Thursday morning...but 
it is not likely to preclude some valley fog as a low level 
subsidence inversion develops. 


Better radiative conditions are expected Thursday night and Friday morning 
under a stronger subsidence inversion. This appears more favorable 
for widespread fog in the inland valleys...and with the strong 
inversion is more likely to linger well into the afternoon and 
keeping temperatures cooler in the valleys. 


Long term...no changes. Previous discussion follows. Friday night 
through Tuesday...the upper ridge continues through Saturday off the 
pacnw coast as a high amplitude pattern in the North Pacific 
continues. This will mean dry weather with fog in the interior 
valleys while the mountains will be mild nearly cloud free. Models 
are continue to show the ridge shifting inland as a more 
consolidated jetstream approaches the West Coast. European model (ecmwf)...GFS and 
GFS ensemble mean are in good agreement in bringing a warm front 
through the area late Sunday into Monday. The European model (ecmwf) flattens the 
ridge more so snow levels will be lower but still above most Cascade 
passes. With the weaker ridge and stronger jet stream pointed into 
the region we can expect more clouds and higher chances for rain for 
the remainder of the long term. Overall have increased probability of precipitation Sun 
night through Tuesday with emphasis on Sun night and Monday. There may 
be another front Tuesday but model solutions diverge regarding this 
feature. /26 
&& 


Aviation...a stalled frontal boundary continues to produce 
widespread drizzle and IFR conditions across the northern 
Willamette Valley. South of this boundary...weak southerly flow 
has helped maintain VFR conditions. As a weak low pressure 
offshore shifts northward this morning...the aforementioned front 
will shift northward with it. This should allow the VFR conditions 
currently found at konp...keug and ksle to spread northward this 
afternoon. However...this improvement may be short lived as 
additional LIFR and IFR conditions will then likely redevelop 
after 03z Thursday at many taf sites. Increasing easterly winds 
near the Columbia River gorge may keep conditions from deteriorating 
at kttd and kpdx though. 


Kpdx and approaches...periods of drizzle and IFR conditions will 
continue this morning...before conditions likely improve to MVFR 
and then finally VFR this afternoon. Strengthening easterly winds 
tonight may allow VFR conditions to persist through 12z 
Thursday...but there is a chance conditions could deteriorate 
into MVFR or IFR towards that period if the winds do not 
materialize. /Neuman 


&& 


Marine...a weak low pressure will push northeastward today along 
a front currently stalled over the waters...but expect few impacts 
to marine interests. High pressure will then strengthen over the 
northeast Pacific as thermal low pressure strengthens over 
northern California. This should set the stage for a more Summer 
like pattern of northerly winds across the waters Thursday through 
Saturday. A weakening frontal storm system will then likely impact 
the waters on Sunday. A more active storm pattern certainly 
appears possible next week...but uncertainty in details remains 
high. /Neuman 


&& 


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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