Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Hurricane season starts on Monday, and a storm may spin up soon. Get the details. Chevron right
Rounds of rain from Texas to Carolinas may lead to flash floods, drought relief. Click for info. Chevron right

Portola Valley, CA

58°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Portola Valley

California

58°
No results found.
Try searching for a city, zip code or point of interest.
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Portola Valley, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel

For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center

Today Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities
Tuesday, May 26

Current Weather

11:41 AM

58°F
Partly sunny
RealFeel® 67°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
RealFeel Shade™ 55°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
RealFeel®
67°
RealFeel Shade™
55°
Max UV Index
9.8 (Very High)
Wind
WNW 8 mph
Wind Gusts
16 mph
Humidity
65%
Indoor Humidity
46% (Ideal Humidity)
Dew Point
46° F
Pressure
↓ 29.90 in
Cloud Cover
31%
Visibility
12 mi
Cloud Ceiling
40000 ft

Day

5/26
65°Hi
RealFeel® 67°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
RealFeel Shade™ 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
Breezy and cool with clouds giving way to sun

Max UV Index11.0 (Extreme)

AccuLumen Brightness Index™9 (Very Bright)

WindWNW 17 mph

Wind Gusts36 mph

Probability of Precipitation5%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover29%

Morning

Afternoon

Night

5/26
51°Lo
RealFeel® 49°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
Partly cloudy

WindW 8 mph

Wind Gusts27 mph

Probability of Precipitation21%

Probability of Thunderstorms1%

Precipitation0.00 in

Cloud Cover45%

Evening

Overnight

Sun & Moon

14 hrs 28 mins
Rise 5:52 AM
Set 8:20 PM
Waxing Gibbous
Rise 4:19 PM
Set 3:28 AM

Temperature History

5/26
High
Low
Forecast
65°
51°
Average
75°
52°
Last Year
68°
52°
Record
98°
1974
40°
1980

Current Weather Conditions in Portola Valley

Portola Valley, California is currently Partly sunny with a temperature of 58°. The current RealFeel® Temperature is 67° (Pleasant) based on observed conditions including 65% humidity, 31% cloud cover, a UV index of 10, and winds of 8 mph. In shade, the RealFeel Shade™ is 55°. AccuWeather's MinuteCast® provides minute-by-minute precipitation forecasts for Portola Valley, powered by forecasting systems and proprietary technology developed by AccuWeather meteorologists since 1962.

Further Ahead

Hourly

10-Day

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Summerlike midweek surge in Northeast to be chased by more chill

33 minutes ago

Severe Weather

Woman dies after vehicle is swept away in Mississippi flash flooding

3 hours ago

Weather Forecasts

Flash flood risk, drought relief to grow from Texas to Carolinas

3 hours ago

Hurricane

Tropics could spring to life at end of May near southeast US

3 hours ago

Astronomy

Blue Moon, 4 planets to shine during the final weekend of May

1 day ago

More Stories

Featured Stories

Weather News

Rescuers race to reach 7 villagers trapped for a week in flooded Laos ...

4 hours ago

Weather News

2 humpback whales traveled over 9,000 miles between Australia and Braz...

1 hour ago

Live Blog

Sun rises on a hot day in Germany

LATEST ENTRY

Brilliant sunrise in a grain field during Germany heat

1 day ago

Climate

Rising seas will swallow New Orleans. People need to start relocating ...

1 day ago

Astronomy

NASA spacecraft captures stunning crescent views of Mars

4 days ago

World North America United States California Portola Valley

Weather Near Portola Valley:

  • Oakland, CA
  • San Francisco, CA
  • San Jose, CA
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...