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Beaverton, Oregon 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Cedar Hills OR
National Weather Service Forecast for: Cedar Hills OR
Issued by: National Weather Service Portland, OR
Updated: 10:46 am PDT Jul 29, 2025
 
Today

Today: Sunny, with a high near 92. North wind 3 to 7 mph.
Sunny
Tonight

Tonight: Mostly clear, with a low around 61. North northwest wind around 6 mph becoming calm  after midnight.
Mostly Clear
Wednesday

Wednesday: Mostly sunny, with a high near 90. Calm wind becoming north around 6 mph in the afternoon.
Mostly Sunny
Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 61. North northwest wind 5 to 7 mph becoming calm  in the evening.
Mostly Cloudy
Thursday

Thursday: Partly sunny, with a high near 82. Calm wind becoming northwest around 5 mph in the afternoon.
Partly Sunny
Thursday
Night
Thursday Night: Partly cloudy, with a low around 60.
Partly Cloudy
Friday

Friday: Mostly sunny, with a high near 83.
Mostly Sunny
Friday
Night
Friday Night: Mostly clear, with a low around 57.
Mostly Clear
Saturday

Saturday: Sunny, with a high near 82.
Sunny
Hi 92 °F Lo 61 °F Hi 90 °F Lo 61 °F Hi 82 °F Lo 60 °F Hi 83 °F Lo 57 °F Hi 82 °F

 

Today
 
Sunny, with a high near 92. North wind 3 to 7 mph.
Tonight
 
Mostly clear, with a low around 61. North northwest wind around 6 mph becoming calm after midnight.
Wednesday
 
Mostly sunny, with a high near 90. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
 
Mostly cloudy, with a low around 61. North northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
 
Partly sunny, with a high near 82. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
 
Partly cloudy, with a low around 60.
Friday
 
Mostly sunny, with a high near 83.
Friday Night
 
Mostly clear, with a low around 57.
Saturday
 
Sunny, with a high near 82.
Saturday Night
 
Partly cloudy, with a low around 55.
Sunday
 
Mostly sunny, with a high near 79.
Sunday Night
 
Mostly cloudy, with a low around 58.
Monday
 
Partly sunny, with a high near 80.

 

Forecast from NOAA-NWS for Cedar Hills OR.

Weather Forecast Discussion
045
FXUS66 KPQR 291732 AAA
AFDPQR

Area Forecast Discussion...UPDATED
National Weather Service Portland OR
1032 AM PDT Tue Jul 29 2025

...Updated aviation discussion...

.SYNOPSIS...Temperatures in the interior valleys warm into the upper
80s to lower 90s today and Wednesday. Thunderstorm chances will
persist along the Casacdes each afternoon, with highest chance
Wednesday and Thursday. Temperatures moderate through the weekend
and into early next week.

&&

.SHORT TERM...Today through Thursday...A vertically stacked low
pressure system will generally remain centered south of the Gulf of
Alaska while weak upper level ridging persists east of the Cascades
through mid-week. This synoptic pattern will likely produce a few
thunderstorms in the Cascades, along with above average temperatures
across the inland valleys. Today is expected to be the warmest day
of the week, as 850 mb temps increase to around 20 C, with afternoon
high temperatures warming into the lower 90s. With temperatures
ranging around 4 to 8 degrees above normal, there is fairly
widespread Moderate Risk of heat related illnesses through the
Willamette Valley. Be sure to stay hydrated and reduce time in the
sun during the warmest part of the day, if possible.

The upper level flow over western Oregon turns due southerly today,
bringing moist air aloft, increasing chances for showers across the
central Oregon Cascades this afternoon and evening, including a 15-
25% chance of thunderstorms in the Lane County Cascades. Similar
conditions persist into Wednesday, with temperatures again warming
into the upper 80s and potentially back into the lower 90s. But,
increasing monsoonal moisture aloft and upper level flow turning
more southeasterly will bring higher chances of showers and
thunderstorms along the Cascades. Expect increasing clouds over the
area through Wednesday night as convective debris drifts northwest,
along with a stronger onshore push through Thursday, potentially
pushing some coastal marine stratus inland. Inland temperatures are
expected to moderate near to slightly below normal (upper 70s to
lower 80s). There is a 10-20% chance of some light rain Thursday
morning. Heights begin to fall across the area as the upper ridge
shifts eastward, but the upper level pattern remains conducive for
another round of afternoon thunderstorms over the central Oregon and
south Washington Cascades. /DH

.LONG TERM...Friday through Monday...A fairly quiet weather pattern
returns through the weekend, with high confidence of temperatures
warming into the upper 70s to lower 80s each afternoon. Model
ensembles and 500 mb cluster analysis indicate a weak troughy
pattern persists, with southwest to westerly flow aloft. There is
around a 10-20% chance of light rain early next week as models and
their ensembles show potential for weak frontal activity moving
across the Pacific Northwest. /DH

&&

.AVIATION...High pressure will maintain VFR conditions with
mostly sunny skies through this evening across all terminals.
Tonight, marine stratus returns to the coast, likely (60-80%
chance) returning IFR/MVFR CIGs to the central Oregon coast (KONP)
by 02-04z Wed and the north Oregon coast (KAST) by 07-09z Wed.
Meanwhile, VFR conditions prevail across the Willamette Valley
overnight with some increasing high clouds. Northerly to
northwesterly winds today around 5-10 kt across the region,
strongest this afternoon with gusts up to 20 kt along the coast
and parts of the Valley. Winds ease tonight after 03-05z Wed.

PDX AND APPROACHES...VFR conditions under mostly clear skies
through the TAF period. Northwesterly winds 5-10 kt with gusts
up to 18 kt this afternoon.       -Alviz

&&

.MARINE...A fairly calm weather pattern persists as a ridge of
surface high pressure sites across the coastal waters. Expect
generally north to northwest winds through the week into the
weekend with gusts of 10-20 kt during the afternoon and evening
hours with minimal little change day to day. During this period
seas remain in the 2 to 5 ft range with a dominant period of 7 to
10 seconds.    /42-Schuldt

&&

.FIRE WEATHER...Increased instability combined with monsoonal
moisture will promote heightened thunderstorm potential. Due to
drier lower atmospheric conditions, thunderstorms have the
potential to be on the dry side. The combination of higher
lightning potential, dry fuels, and drier surface conditions has
promoted the issuance of a Fire Weather Watch for the
Willamette National Forecast Cascades - especially along the
crest. Right now, the probability of thunderstorms ranges from
15-30% with the highest probability occurring on Wednesday. However,
Thursday does have similar probabilities for lightning although
lower level moisture is expected to increase.

&&

.PQR WATCHES/WARNINGS/ADVISORIES...

OR...Fire Weather Watch from Wednesday morning through Thursday
     morning for ORZ689-690.
WA...None.
PZ...None.

&&

$$

www.weather.gov/portland

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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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