Portland, Oregon Weather Conditions

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Current Conditions

  • 34°
  • Fog
  • Wind: WNW 5 mph
  • Humidity: 100%
  • Visibility: 0.5 miles
  • Dew Point: 34°
  • Pressure: 30.33 in. 0
  • Heat Index: 30

Nowcast

  • Now as of 6:04 am PST on January 30, 2015

    Fog in the Tualatin River Valley and in the lower Columbia River valley will continue through the mid morning hours. Pockets of dense fog exist...particularly around Hillsboro and between Scappoose and North Portland along Highway 30. In addition...fog will be occasionally dense along Interstate 5...particularly near the Interstate bridge. Temperatures are also near freezing in many of these places early this morning so roads may be slick from frost build up.

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
39°
45°
50°
52°
46°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Clear
  • High: 55 °
  • Low: 37 °
  • Clear
  • Saturday
  • Partly Cloudy
  • High: 50 °
  • Low: 39 °
  • Partly Cloudy
  • Sunday
  • Rain
  • High: 50 °
  • Low: 46 °
  • Rain
  • Monday
  • Chance of Rain
  • High: 54 °
  • Low: 41 °
  • Chance of Rain
  • Tuesday
  • Chance of Rain
  • High: 54 °
  • Low: 41 °
  • Chance of Rain

Forecast for Portland, Oregon

Updated: 7:00 AM PST on January 30, 2015

  • Friday

    Clear. High of 55F. Winds from the ENE at 10 to 15 mph.

  • Friday Night

    Mostly cloudy. Low of 37F. Winds from the ENE at 10 to 15 mph.

  • Saturday

    Partly cloudy. High of 50F. Breezy. Winds from the NNW at 15 to 20 mph shifting to the West in the afternoon.

  • Saturday Night

    Mostly cloudy in the evening, then overcast with a chance of rain. Low of 39F. Breezy. Winds from the West at 10 to 20 mph shifting to the South after midnight. Chance of rain 60%.

  • Sunday

    Overcast with rain. High of 50F. Winds from the East at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.2 in. possible.

  • Sunday Night

    Clear with a chance of rain. Low of 46F. Winds less than 5 mph. Chance of rain 20%.

  • Monday

    Partly cloudy with a chance of rain. Fog early. High of 54F. Winds from the SSW at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.6 in. possible.

  • Monday Night

    Partly cloudy with a chance of rain. Fog overnight. Low of 41F. Winds less than 5 mph. Chance of rain 40%.

  • Tuesday

    Partly cloudy with a chance of rain in the afternoon. Fog early. High of 54F. Winds less than 5 mph. Chance of rain 40%.

  • Tuesday Night

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

  • Wednesday

    Partly cloudy with a chance of rain. High of 54F. Winds less than 5 mph. Chance of rain 30%.

  • Wednesday Night

    Clear. Low of 43F. Winds less than 5 mph.

  • Thursday

    Partly cloudy with a chance of rain. High of 52F. Winds from the East at 5 to 10 mph. Chance of rain 60%.

  • Thursday Night

    Clear with a chance of rain. Fog overnight. Low of 45F. Winds from the East at 5 to 10 mph. Chance of rain 50% with rainfall amounts near 0.4 in. possible.

  • Friday

    Clear with a chance of rain. Fog early. High of 55F. Winds from the SSE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Friday Night

    Clear. Low of 46F. Winds from the South at 5 to 10 mph.

  • Saturday

    Clear. High of 59F. Winds from the South at 5 to 10 mph.

  • Saturday Night

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

  • Sunday

    Clear. High of 61F. Winds less than 5 mph.

  • Sunday Night

    Clear with a chance of rain. Low of 54F. Winds less than 5 mph. Chance of rain 30%.

  • Monday

    Clear with a chance of a thunderstorm. High of 59F. Winds less than 5 mph. Chance of rain 40%.

  • Monday Night

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

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Southwest Portland, Portland, OR

Updated: 7:25 AM PST

Temperature: 40.1 °F Dew Point: 36 °F Humidity: 84% Wind: North at - Pressure: 30.35 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:26 AM PST

Temperature: 41.7 °F Dew Point: 35 °F Humidity: 77% Wind: North at - Pressure: 30.31 in Hourly Precipitation: - Windchill: 42 °F Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:26 AM PST

Temperature: 41.2 °F Dew Point: 37 °F Humidity: 85% Wind: North at - Pressure: 30.41 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: Lair Hill, Portland, OR

Updated: 7:26 AM PST

Temperature: 39.9 °F Dew Point: 34 °F Humidity: 79% Wind: NNE at 3.6 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: APRSWXNET Portland OR US, Portland, OR

Updated: 6:45 AM PST

Temperature: 37 °F Dew Point: 34 °F Humidity: 89% Wind: NE at 11 mph Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Bridlemile, Portland, OR

Updated: 7:24 AM PST

Temperature: 37.6 °F Dew Point: 35 °F Humidity: 89% Wind: NNE at 3.7 mph Pressure: 30.12 in Hourly Precipitation: - Windchill: 35 °F Graphs

Location: Downtown Portland, Portland, OR

Updated: 7:24 AM PST

Temperature: 41.2 °F Dew Point: 34 °F Humidity: 80% Wind: North at - Pressure: 30.19 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:26 AM PST

Temperature: 41.2 °F Dew Point: 36 °F Humidity: 80% Wind: North at - Pressure: 30.19 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: Multnomah Village North, Portland, OR

Updated: 7:22 AM PST

Temperature: 39.9 °F Dew Point: 36 °F Humidity: 86% Wind: Calm Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: N of Bridlemile School, Portland, OR

Updated: 7:12 AM PST

Temperature: 40.0 °F Dew Point: 36 °F Humidity: 85% Wind: Calm Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: APRSWXNET Portland OR US, Portland, OR

Updated: 6:56 AM PST

Temperature: 40 °F Dew Point: 36 °F Humidity: 85% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Westerly, NW Portland, Portland, OR

Updated: 7:15 AM PST

Temperature: 40.0 °F Dew Point: 36 °F Humidity: 84% Wind: Calm Pressure: 30.28 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: Downtown, Portland, OR

Updated: 7:26 AM PST

Temperature: 39.7 °F Dew Point: 36 °F Humidity: 86% Wind: North at - Pressure: 30.25 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: Brooklyn, Portland, OR

Updated: 7:26 AM PST

Temperature: 40.5 °F Dew Point: 33 °F Humidity: 76% Wind: Calm Pressure: 29.80 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Hillside, Portland, OR

Updated: 7:25 AM PST

Temperature: 38.8 °F Dew Point: 35 °F Humidity: 86% Wind: North at - Pressure: 30.06 in Hourly Precipitation: - Windchill: 39 °F Graphs

Location: Pearl District, Portland, OR

Updated: 7:25 AM PST

Temperature: 41.7 °F Dew Point: 36 °F Humidity: 80% Wind: North at - Pressure: 30.18 in Hourly Precipitation: - Windchill: 42 °F Graphs

Location: Sylvan Highlands, Portland, OR

Updated: 7:26 AM PST

Temperature: 37.0 °F Dew Point: 34 °F Humidity: 87% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: South Burlingame, Portland, OR

Updated: 7:26 AM PST

Temperature: 40.3 °F Dew Point: 35 °F Humidity: 82% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 1.63 in Windchill: 40 °F Graphs

Location: Buckman, Portland, OR

Updated: 7:26 AM PST

Temperature: 38.8 °F Dew Point: 35 °F Humidity: 87% Wind: North at - Pressure: 30.19 in Hourly Precipitation: - Windchill: 39 °F Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:21 AM PST

Temperature: 39.9 °F Dew Point: 38 °F Humidity: 92% Wind: North at - Pressure: 30.40 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: Creston - Kenilworth, Portland, OR

Updated: 7:26 AM PST

Temperature: 41.9 °F Dew Point: 36 °F Humidity: 81% Wind: North at - Pressure: 30.52 in Hourly Precipitation: - Windchill: 42 °F Graphs

Location: Richmond / Stripling Weather Network, Portland, OR

Updated: 7:25 AM PST

Temperature: 36.7 °F Dew Point: 35 °F Humidity: 93% Wind: Calm Pressure: 30.28 in Hourly Precipitation: - Windchill: 37 °F Graphs

Location: Portland Rowing Club, Portland, OR

Updated: 7:26 AM PST

Temperature: 41.5 °F Dew Point: 37 °F Humidity: 83% Wind: NNE at 1.0 mph Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:25 AM PST

Temperature: 37.6 °F Dew Point: 37 °F Humidity: 99% Wind: North at - Pressure: 30.39 in Hourly Precipitation: - Windchill: 38 °F Graphs

Location: Southwest Portland, Portland, OR

Updated: 7:21 AM PST

Temperature: 41.2 °F Dew Point: 36 °F Humidity: 82% Wind: North at - Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Waverleigh Heights, Portland, OR

Updated: 7:13 AM PST

Temperature: 40.6 °F Dew Point: 37 °F Humidity: 85% Wind: Calm Pressure: 30.29 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: Raleigh Hills, Portland, OR

Updated: 7:13 AM PST

Temperature: 38.3 °F Dew Point: 36 °F Humidity: 90% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Windchill: 38 °F Graphs

Location: Sullivan's Gulch, Portland, OR

Updated: 7:26 AM PST

Temperature: 42.1 °F Dew Point: 32 °F Humidity: 68% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Richmond, Portland, OR

Updated: 7:25 AM PST

Temperature: 37.2 °F Dew Point: 35 °F Humidity: 92% Wind: North at - Pressure: 30.38 in Hourly Precipitation: - Windchill: 37 °F Graphs

Location: Irvington, Portland, OR

Updated: 7:26 AM PST

Temperature: 36.5 °F Dew Point: 35 °F Humidity: 94% Wind: Calm Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: APRSWXNET Portland OR US, Portland, OR

Updated: 6:59 AM PST

Temperature: 37 °F Dew Point: 35 °F Humidity: 94% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Laurelhurst, Portland, OR

Updated: 7:25 AM PST

Temperature: 37.6 °F Dew Point: 30 °F Humidity: 75% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Smith School, Portland, OR

Updated: 7:14 AM PST

Temperature: 39.7 °F Dew Point: 34 °F Humidity: 80% Wind: Calm Pressure: 30.31 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Creston Park, Portland, OR

Updated: 7:26 AM PST

Temperature: 41.0 °F Dew Point: 36 °F Humidity: 83% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: West Hills, Portland, OR

Updated: 7:19 AM PST

Temperature: 38.5 °F Dew Point: 36 °F Humidity: 88% Wind: Calm Pressure: 29.56 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: West Slope, Portland, OR

Updated: 7:26 AM PST

Temperature: 37.0 °F Dew Point: 33 °F Humidity: 86% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Raleigh Park, Portland, OR

Updated: 7:26 AM PST

Temperature: 36.2 °F Dew Point: 34 °F Humidity: 90% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Forest Park, Portland, OR

Updated: 7:18 AM PST

Temperature: 37.4 °F Dew Point: 35 °F Humidity: 90% Wind: SSE at 1.0 mph Pressure: 29.43 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Upper Hawthorne, Portland, OR

Updated: 7:23 AM PST

Temperature: 34.5 °F Dew Point: 34 °F Humidity: 99% Wind: Calm Pressure: 30.06 in Hourly Precipitation: - Windchill: 34 °F Graphs

Location: SW Portland - Tryon Creek, Portland, OR

Updated: 7:26 AM PST

Temperature: 41.2 °F Dew Point: 36 °F Humidity: 82% Wind: East at 5.4 mph Pressure: 30.34 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Portland or 
236 am PST Friday Jan 30 2015 


Synopsis..building high pressure and offshore flow should produce 
relatively mild temperatures...areas of valley fog and east winds 
near the mouth of the Columbia River gorge through Saturday night. A 
weakening storm system will likely bring a shot of rain to the area 
Sunday afternoon and evening. Another shot of rain appears likely on 
Monday. Additional rounds of rain appear possible during the 
middle of next week...but confidence in the details is low. A wetter 
storm system appears possible late next week. Significant snows at 
Cascade Pass level appear unlikely during the next week. 


&& 


Short term...today through Monday...fog product and surface 
observations indicate fog has developed along the eastern portions of 
the central and southern Willamette Valley and along the lower 
Columbia River valley between Scappoose and Longview/Castle Rock. A 
weak northerly pressure gradient appears to be generating just enough 
mixing in the lower atmosphere to prevent widespread fog from 
developing across the western portion of the Willamette 
Valley...aside from the Hillsboro area. Do not expect a lot of change 
going forward so the fog coverage wording was trimmed to match 
observations and trends. 


A relatively deep cold pool and accompanying stratus deck lie east of 
the Cascades. This has resulted in a 6 to 7mb cross Cascade pressure 
gradient and allowed east winds to blow near the mouth of the 
Columbia River gorge. Expect these winds to continue through the 
weekend...and perhaps increase a bit Saturday night. 


The GFS and ec generally agree the upper level ridge over the region 
will flatten on Sunday...and allow a weakening front to bring a shot 
of rain to the area. Continued the upward trend in probability of precipitation and quantitative precipitation forecast as a 
result. Models also finally seem to be agreeing that an additional 
shortwave trough riding eastward in the westerly flow will likely 
bring a more substantial round of rain Monday. Snow levels generally 
look to remain well above Cascade Pass levels during this time 
though. /Neuman 




Long term...Monday night through Thursday...models have backed off 
on the idea that shortwave ridging would build into the area quickly 
on Tuesday. Instead...additional shortwave troughs riding eastward 
in the zonal pattern may bring another round or two of rain 
midweek...but considerable differences in the evolution and timing 
of these systems remain. As a result...probability of precipitation were generally kept in 
the chance range midweek. Either way...these systems look to be 
relatively warm so substantial Cascade snows appear unlikely. 
However...snow levels may end up being a touch lower across the 
South Washington Cascades where cold air damming could allow higher 
snow totals to fall depending on how these systems play out. A more 
substantial frontal storm system appears as though it will arrive 
later in the week. Snow levels will once again be relatively high 
with this system and it appears unlikely to help our pitiful 
mountain snowpack. /Neuman 


&& 


Aviation...coastal sites remain under VFR conditions due to 
light easterly winds. This should continue through today. Fog has 
developed over the south Willamette Valley and has locked keug in 
with IFR/LIFR ceilings and visible for the morning. Dense fog bank is 
settling in along the east side of the south and central 
Willamette Valley...keeping ksle VFR. If fog does fill in 
westward...it will likely be more patchy on this side of the 
valley. This means if fog does develop at ksle...ceilings and visible will 
likely bounce between IFR and MVFR before it Burns off by 18-20z. 
Fog over the north Willamette Valley will again be patchy as east 
wind out of The Gorge keeps some areas clear...mainly on the east 
site such as kttd...while areas more protected from easterly 
winds develop fog bringing ceilings and visible down to IFR/LIFR. East winds 
are weaker than last night...though...and don't appear to be 
making to to kpdx. Infrared satellite is showing some fog creeping 
eastward up the Columbia River from Kelso...which could bring ceilings 
and visible down at kpdx to IFR/LIFR by 12-14z if winds remain calm. 


Kpdx and approaches...VFR conditions currently. Infrared satellite is 
showing some fog creeping eastward up the Columbia River from 
Kelso...which could bring fog into pdx around 13z. East winds 
from The Gorge don't appear likely to make it to pdx this 
morning...so calm conditions will allow this fog to make it to 
pdx. This would lower ceilings and visible to IFR/LIFR around 13z. Fog 
should lift by 18z. -McCoy 


&& 


Marine...high pressure over the waters will persist through early 
Saturday. Though northerly winds are gusting to 20 to 25 kts over 
the waters to our south...northerly winds across our waters are 
staying around 10 to 15 kts this morning...occasionally gusting 
near 20 mainly in our southern waters. Northerly winds will 
continue through Saturday until the approaching weak frontal 
system veers winds to the east with its approach Saturday 
afternoon. Winds continue to veer to southerly by Sunday 
morning and increase through the day. Southerly winds with this 
weak frontal system on Sunday look to peak around 15 kts with 
gusts just below 20 kts. The strongest winds will be over the 
northern waters. Winds weaken behind the front Sunday night before 
another front approaches late Sunday night/early Monday. Winds 
look to increase to just below Small Craft Advisory criteria 
as this second front moves through Monday morning. Post-front 
westerlies will stay up around 10 to 15 kts gusting near 20 kts 
through Monday afternoon...starting to drop back down to 5 to 10 
kts by Tuesday morning. 


Seas are currently around 6 to 7 feet and falling. Seas could drop 
as low as 4 feet before the first frontal system brings seas back 
up to around 6-7 feet early Sunday. Seas remain around 6-7 feet 
through Sunday afternoon...but build to near 10 feet by early 
Monday. Seas look to stay around 10 feet with the second frontal 
passage through Monday afternoon...finally dropping back below 10 
feet by Tuesday. -McCoy 


&& 


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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