Hillsboro, Oregon Weather Conditions

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Current Conditions

  • 43°
  • Clear
  • Wind: Calm
  • Humidity: 80%
  • Visibility: 10.0 miles
  • Dew Point: 37°
  • Pressure: 30.31 in. +

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Next 12 Hours

4  am
7  am
10  am
1  pm
4  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Clear
Clear
Clear
Clear
43°
43°
54°
62°
68°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Partly Cloudy
  • High: 69 °
  • Low: 47 °
  • Partly Cloudy
  • Sunday
  • Clear
  • High: 82 °
  • Low: 54 °
  • Clear
  • Monday
  • Clear
  • High: 83 °
  • Low: 51 °
  • Clear
  • Tuesday
  • Overcast
  • High: 73 °
  • Low: 50 °
  • Overcast
  • Wednesday
  • Chance of Rain
  • High: 67 °
  • Low: 50 °
  • Chance of Rain

Forecast for Hillsboro, Oregon

Updated: 4:09 am PDT on April 30, 2016

  • Today

    Partly cloudy until afternoon...then mostly sunny. Highs around 65. Northwest wind 5 to 10 mph.

  • Tonight

    Mostly clear. Lows 45 to 50. North wind 5 to 10 mph.

  • Sunday

    Sunny...warmer. Highs 80 to 85. Northeast wind 5 to 15 mph with gusts to 25 mph.

  • Sunday Night

    Clear. Lows 50 to 55. Northeast wind 5 to 15 mph. Near The Gorge...gusts to 35 mph after midnight.

  • Monday

    Mostly sunny. Highs around 85. Northeast wind 5 to 15 mph shifting to the south late in the afternoon. Near The Gorge...gusts to 25 mph in the morning.

  • Monday Night

    Partly cloudy with a 20 percent chance of showers. Lows around 50.

  • Tuesday

    Partly sunny. Slight chance of showers in the morning... then a chance of showers in the afternoon. Highs around 75. Chance of precipitation 30 percent.

  • Tuesday Night

    Mostly cloudy with a 40 percent chance of showers. Lows around 50.

  • Wednesday

    Cloudy with a 50 percent chance of showers. Highs 70 to 75.

  • Wednesday Night

    Cloudy with a 50 percent chance of showers. Lows around 50.

  • Thursday

    Mostly cloudy with a 40 percent chance of showers. Highs 65 to 70.

  • Thursday Night

    Mostly cloudy with a 20 percent chance of showers. Lows around 45.

  • Friday

    Partly sunny with a 20 percent chance of showers. Highs around 70.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: South Hills, Cornelius, OR

Updated: 4:10 AM PDT

Temperature: 40.5 °F Dew Point: 38 °F Humidity: 91% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Tualatin River Farm, Hillsboro, OR

Updated: 3:56 AM PDT

Temperature: 42.9 °F Dew Point: 40 °F Humidity: 89% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: APRSWXNET, Hillsboro, OR

Updated: 3:27 AM PDT

Temperature: 46 °F Dew Point: 40 °F Humidity: 79% Wind: West at 1 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Edwards Meadows, Hillsboro, OR

Updated: 4:05 AM PDT

Temperature: 43.1 °F Dew Point: 38 °F Humidity: 83% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Jackson Bottom Wetlands Preserve, Hillsboro, OR

Updated: 4:10 AM PDT

Temperature: 42.7 °F Dew Point: 35 °F Humidity: 73% Wind: South at 1.0 mph Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Larkins Mill Rd, Hillsboro, OR

Updated: 4:10 AM PDT

Temperature: 43.0 °F Dew Point: 36 °F Humidity: 76% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Rock Creek, Hillsboro, OR

Updated: 4:08 AM PDT

Temperature: 45.8 °F Dew Point: 40 °F Humidity: 79% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Iowa Hill, Cornelius, OR

Updated: 4:06 AM PDT

Temperature: 39.7 °F Dew Point: 29 °F Humidity: 64% Wind: SW at 4.5 mph Pressure: 28.45 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Laurel, Hillsboro, OR

Updated: 4:10 AM PDT

Temperature: 44.4 °F Dew Point: 38 °F Humidity: 79% Wind: WNW at 3.0 mph Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: South Hillsboro, Hillsboro, OR

Updated: 4:10 AM PDT

Temperature: 44.5 °F Dew Point: 38 °F Humidity: 79% Wind: Calm Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Turner Creek II, Hillsboro, OR

Updated: 4:10 AM PDT

Temperature: 44.6 °F Dew Point: 40 °F Humidity: 84% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Bentley Orchards, Hillsboro, OR

Updated: 4:05 AM PDT

Temperature: 40.5 °F Dew Point: 37 °F Humidity: 87% Wind: Calm Pressure: 30.37 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: 209th & Farmington Aloha, OR

Updated: 4:02 AM PDT

Temperature: 41.7 °F Dew Point: 40 °F Humidity: 93% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Cooper Mountain - Aloha North, Aloha, OR

Updated: 4:06 AM PDT

Temperature: 46.6 °F Dew Point: 38 °F Humidity: 72% Wind: North at - Pressure: 30.39 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Conifer Ridge, Beaverton, OR

Updated: 4:10 AM PDT

Temperature: 43.9 °F Dew Point: -9 °F Humidity: - Wind: Calm Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Stone Hill, Aloha, OR

Updated: 4:10 AM PDT

Temperature: 42.2 °F Dew Point: 40 °F Humidity: 90% Wind: Calm Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Near Century High School, Hillsboro, OR

Updated: 4:09 AM PDT

Temperature: 45.0 °F Dew Point: 37 °F Humidity: 77% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Dominie Park, Aloha, OR

Updated: 4:10 AM PDT

Temperature: 40.3 °F Dew Point: 40 °F Humidity: 97% Wind: Calm Pressure: 30.09 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: APRSWXNET, Farmington, OR

Updated: 3:37 AM PDT

Temperature: 44 °F Dew Point: 39 °F Humidity: 82% Wind: Calm Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Reedville, Hillsboro, OR

Updated: 4:06 AM PDT

Temperature: 43.5 °F Dew Point: 39 °F Humidity: 85% Wind: North at - Pressure: 30.38 in Hourly Precipitation: - Windchill: 44 °F Graphs

Location: Lexington Village, Hillsboro, OR

Updated: 4:09 AM PDT

Temperature: 40.4 °F Dew Point: 40 °F Humidity: 97% Wind: North at - Pressure: 30.54 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: Northeast Meadow Lane, Hillsboro, OR

Updated: 4:05 AM PDT

Temperature: 44.1 °F Dew Point: 39 °F Humidity: 82% Wind: North at - Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Nobel Woods Park, Hillsboro, OR

Updated: 4:06 AM PDT

Temperature: 39.6 °F Dew Point: 38 °F Humidity: 92% Wind: Calm Pressure: 30.23 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: Preston Meadows, Hillsboro, OR

Updated: 4:07 AM PDT

Temperature: 41.5 °F Dew Point: 40 °F Humidity: 93% Wind: Calm Pressure: 30.15 in Hourly Precipitation: - Windchill: 42 °F Graphs

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

Updated: 3:58 AM PDT

Temperature: 46.4 °F Dew Point: 40 °F Humidity: 77% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Kensington Park, Oregon, OR

Updated: 4:10 AM PDT

Temperature: 40.2 °F Dew Point: 38 °F Humidity: 94% Wind: Calm Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Northridge, Beaverton, OR

Updated: 2:17 AM PDT

Temperature: 47.3 °F Dew Point: 40 °F Humidity: 77% Wind: Calm Pressure: 29.75 in Hourly Precipitation: - Windchill: 47 °F Graphs

Location: APRSWXNET, Beaverton, OR

Updated: 3:26 AM PDT

Temperature: 44 °F Dew Point: 37 °F Humidity: 75% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Baseline / Cornelius Pass, Aloha, OR

Updated: 4:10 AM PDT

Temperature: 43.2 °F Dew Point: 39 °F Humidity: 86% Wind: Calm Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Renaissance Point 2, Beaverton, OR

Updated: 4:03 AM PDT

Temperature: 43.5 °F Dew Point: 39 °F Humidity: 84% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Hawthorn Farms, Hillsboro, OR

Updated: 4:07 AM PDT

Temperature: 41.7 °F Dew Point: 38 °F Humidity: 85% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Bald Peak, Hillsboro, OR

Updated: 3:55 AM PDT

Temperature: 40.5 °F Dew Point: 35 °F Humidity: 80% Wind: Calm Pressure: 30.21 in Hourly Precipitation: - Windchill: 40 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
345 am PDT Sat Apr 30 2016 


Synopsis...clouds and a few areas of drizzle linger in the Cascades 
this morning...leftover from the low pressure system which is now 
moving southeast into Arizona. Strong high pressure over the NE Pacific will 
nose into British Columbia/Washington today and Sunday...with drier north to northeasterly 
flow developing. This will cause a significant warmup this weekend 
with temperatures once again 15 to 25 degrees above average throughout the 
forecast area by Sunday...likely continuing into Monday inland. 
Shower chances increase later Monday and Tuesday as a slow moving 
cold front approaches from the Pacific. There may be enough 
instability either day for a couple thunderstorms...with the best 
chance being in the Cascades. Cooler...showery weather is expected to 
continue for the remainder of the week as upper troughing lingers 
over the West Coast. 


&& 


Short term...today through Monday...water vapor satellite imagery 
shows our upper low digging S-southeast along the California/Nevada border and headed 
toward Arizona. Lingering low-level moisture continues to bank up 
against the Cascades and Coast Range...producing enough drizzle or 
light rain to measure at a few RAWS sites here and there. Tough to 
discriminate between actual precipitation and melting snow at some of 
the higher elevation sites...but am fairly confident some areas of 
drizzle will continue in the higher terrain beyond 12z this morning. 
Will keep probability of precipitation low...around 10 percent...but added mention of drizzle 
accordingly. 


Otherwise...the main story the next few days will be yet another warm 
spell across SW Washington/northwest or. This will likely be the third warm spell 
with highs in the 80s this season for inland valleys...and possibly 
the coast as well. Today will be the transition day with decreasing 
clouds and a few degrees of warming versus Friday. Flow aloft turns 
decidedly easterly tonight and Sunday as the upper low over the 
southwestern United States tries to get into a Rex block with a 
strengthening upper ridge over western Canada and Washington. This 
will cause the warming trend to begin in earnest for Sunday and 
Monday. As flow turns offshore the air mass will dry considerably. 
This should bring plenty of sunshine for Sunday and Monday. 


Temperatures at 850 mb do not look quite as warm as the last two events... 
nor will 500 mb heights be quite as high. Seeing fairly good model 
agreement regarding how warm the air mass will be...with both the 00z 
GFS and European model (ecmwf) showing 850 mb temperatures peaking at around +15 degree c over 
the Willamette Valley Sunday and Monday. Having difficulty pulling up 
archived sounding data at the moment...but based on memory this 
compares to +17 to +20 degree c from our past two warm spells. With deep 
easterly flow developing just above the surface... any thermal trough 
which develops will likely stay offshore Sunday. This should allow 
the coast to get in on the warming as well... possibly even being the 
warmest in our County Warning Area on Sunday as they take advantage of the 
double-downslope effect off both the Cascades and Coast Range. 
Although the air mass does not appear warm enough for 90s this time 
around...80s appear to be a good bet for just about anyone at low 
elevation in our County Warning Area Sunday and/or Monday. 


00z/06z NAM show what seems to be a pretty realistic evolution of the 
thermal trough into a thermal low just off the coast Sun night/ early 
Monday...which then lifts north along the Pacific northwest coast Monday. This 
could prompt a S-SW surge of marine air along the coast Monday... 
possibly trickling inland enough to keep temperatures a little cooler for 
Eugene. As one part of the thermal low lifts north along the Pacific northwest 
coast...another portion will likely migrate across the Willamette 
Valley and Cascades Monday afternoon. This could enhance 
instability...with the leading edge of cooler marine air effectively 
working as a cold front to provide some added lift for surface-based 
parcels. Model soundings are showing a decent amount of instability 
for the Willamette Valley Monday...with the 06z NAM now showing about 
1000-1500 j/kg of ml cape and only weak cin during the afternoon. 
Will hold off on adding a thunder mention west of the Cascade 
foothills for now...but future shifts may need to revisit this. It is 
notable that the 00z GFS shows considerably less cape for the 
Willamette Valley Monday afternoon...closer to 300-500 j/kg of ml 
cape...which also swayed US toward holding off on the thunder mention 
aside from the Cascades. Either way...shower chances start to 
increase Monday...and the remainder of the week looks closer to 
normal for Spring with cooler temperatures and showers at times. 


A climate note to further put this extremely warm Spring into 
perspective...pdx has already had six 80-degree days this season. 
This is an all-time record pace for pdx...and only 2004 and 1947 have 
had 5 80-degree days by the end of April since records started in 
1940. In Stark contrast...1954 had just 10 80-degree days the entire 
year at pdx. The average for an entire year at pdx is 51 days. Using 
pdx as an example again...the mean temperature for April 2016 through 
the 28th is 57.9 degree f...5.9 degree f above normal and a stunning 1.6 
degree f above the previous record of 56.3 degree f from April 2004. 
Records are not just being broken...they are being shattered due to 
the series of Summer-caliber upper ridges that have affected the Pacific 
northwest this month. May 2016 looks to be starting no differently. Weagle 


Long term...Monday night through Friday...models seem to be showing 
reasonable agreement that relatively cooler marine air will push 
inland and deepen on SW flow Monday night and Tuesday...as thermal 
low pressure shifts north and east of the forecast area. With little 
to no easterly component to the flow aloft and increasingly stable 
marine air in the lower levels...decided to remove thunderstorms from 
The Lowlands Tuesday and Wednesday. The better chance for thunder in 
The Lowlands may actually be Monday as the leading edge of marine air 
acts as a lifting mechanism on a somewhat unstable air mass. Assuming 
the early week upper ridge does not form a strong and persistent Rex 
block...models suggest the ridge will migrate eastward enough to 
allow an upper trough to take residence over the Pacific northwest middle to late 
week. This solution would bring a cooldown closer to normal temperatures for 
early may along with plenty of showers. Weagle 


&& 


Aviation...VFR conditions are expected to prevail today and 
tonight. Middle level ceilings around 5000 to 7000 feet are back building 
off the Cascades and extend over most of the Willamette Valley. 
There is less clouds over the Coast Range and western slopes of 
the valley that may be enough to allow lower stratus to 
develop...perhaps around 2000-3000 feet for a few hours this 
morning. But the trend is to dissipate the clouds later this 
morning and through the afternoon as drier northerly flow 
develops. 


Kpdx and approaches...VFR expected for the next 24 hours. There is 
a 25 percent chance for ceilings around 2500-3000 feet to develop 
between 13z and 17z. 


&& 


Marine...a thermal trough over the south Oregon coast will 
strengthen today bringing increasing winds across the waters 
later the morning and afternoon. The strongest winds are expected 
over south of about Cascade Head. Winds near shore should ease 
later this evening...but continue over the outer marine zones into 
Sun morning. The thermal trough expands north sun then shifts over 
the coastal waters Sun night and continues to the Washington 
coastal waters Monday. 


Seas have been generally running just under 10 feet...but with 
dominant periods ranging from 8 to 11 seconds. Will expand 
hazardous seas advisory for steep seas through middle morning. 


As the winds pick up late Sat...so will the choppy wind driven 
seas...reaching about 8 to 10 feet S of Newport at times in the 
afternoon/evenings. 


&& 


Pqr watches/warnings/advisories... 
or...none. 
Washington...none. 
Pz...Small Craft Advisory for winds until 9 am PDT Sunday for waters 
from Cape Shoalwater Washington to Florence or from 10 to 60 nm. 


Small Craft Advisory for hazardous seas until 9 am PDT this 
morning for coastal waters from Cape Shoalwater Washington to 
Florence or out 60 nm. 


Small Craft Advisory for winds from 2 PM this afternoon to 
midnight PDT tonight for coastal waters from Cape 
Shoalwater Washington to Cascade Head or out 10 nm. 


Small Craft Advisory for winds until midnight PDT tonight for 
coastal waters from Cascade Head to Florence or out 10 nm. 


&& 


$$ 


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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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