Weather forecast for 10 days
Portola Valley, CA

Weather forecast for the weekend

Saturday, May 3.

AM Clouds / PM Sun
6:09 am

8:02 pm
PDT
AM Clouds / PM Sun
54°F / 45°F
  • Wind: 17mph WNW
  • Humidity: 79%
  • Precip. probability: 24%
  • Precipitation: 0"
  • UV index: 7
Tomorrow, low clouds in the morning are expected to clear, bringing a bright afternoon.
Slight changes in temperature are anticipated, reaching a high of a crisp 53.6°F and decreasing to a low of a brisk 44.6°F.
The predicted high will feel colder, consistent with April's climate average of 62.2°F.
Sunrise will be at 6:09 am and sunset at 8:02 pm; tomorrow's daylight will last for 13h and 53min.

Sunday, May 4.

Sunny
6:08 am

8:02 pm
PDT
Sunny
63°F / 50°F
  • Wind: 12mph WNW
  • Humidity: 63%
  • Precip. probability: 6%
  • Precipitation: 0"
  • UV index: 9
On Sunday, May 4, bright and sunny weather is expected.
Predicted temperature values will span from an enjoyable 62.6°F down to a fresh 50°F.
Sunday's temperature is anticipated to match May's standard peak of 64.9°F.
Sunrise will be at 6:08 am and sunset at 8:02 pm; the daylight will last for 13h and 55min.

Frequently asked questions

What is the weather forecast for Portola Valley for tomorrow?
On Saturday, in Portola Valley, expect a cloudy morning, but by midday, the sun will begin to shine through.
What will be the highest temperature tomorrow?
Tomorrow, the highest temperature will be 53.6°F, while the lowest temperature will be 44.6°F.
Tomorrow, the maximum temperature will be notably lower than the average highest temperature of 64.9°F in May. The lowest temperature tomorrow will be moderately lower than the average low temperature.
When are sunrise and sunset tomorrow?
On Saturday, in Portola Valley, sunrise will be at 6:09 am and sunset at 8:02 pm (PDT).
How long will the day be tomorrow?
In Portola Valley, the length of the day tomorrow will be 13h and 53min.
What is the weather forecast for Portola Valley for Sunday?
On Sunday, the outlook remains bright and sunny.
What will be the maximum temperature on Sunday?
On Sunday, the highest temperature will be 62.6°F, while the lowest temperature will be 50°F.
What is the weather forecast for Portola Valley for the next ten days?
In Portola Valley, a combination of overcast and clear weather is expected for the next ten days.
How warm will it be in the next ten days?
The maximum temperature will range between 53.6°F and 77°F, while the minimum temperature will be between 44.6°F and 50°F.
What will be the warmest and the coldest days?
Monday will be the warmest day, with a maximum temperature of 77°F. Tomorrow will be the coldest day, with a maximum temperature of 53.6°F.

Long-term weather forecast

FriMay 2.
  • 64°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Wind: 12mph WNW
  • Humidity: 69%
  • UV index: 8
  • Precip. probability: 4%
  • Precipitation: 0"
  • 6:10 am 8:01 pm PDT
SatMay 3.
  • 54°F
  • 45°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Wind: 17mph WNW
  • Humidity: 79%
  • UV index: 7
  • Precip. probability: 24%
  • Precipitation: 0"
  • 6:09 am 8:02 pm PDT
SunMay 4.
  • 63°F
  • 50°F
Sunny
Sunny
  • Wind: 12mph WNW
  • Humidity: 63%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0"
  • 6:08 am 8:02 pm PDT
MonMay 5.
  • 77°F
  • 48°F
Sunny
Sunny
  • Wind: 12mph N
  • Humidity: 34%
  • UV index: 9
  • Precip. probability: 1%
  • Precipitation: 0"
  • 6:07 am 8:03 pm PDT
TueMay 6.
  • 70°F
  • 48°F
Sunny
Sunny
  • Wind: 9mph SSW
  • Humidity: 59%
  • UV index: 9
  • Precip. probability: 3%
  • Precipitation: 0"
  • 6:06 am 8:04 pm PDT
WedMay 7.
  • 66°F
  • 48°F
Sunny
Sunny
  • Wind: 7mph SW
  • Humidity: 71%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0"
  • 6:05 am 8:05 pm PDT
ThuMay 8.
  • 68°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph WNW
  • Humidity: 66%
  • UV index: 9
  • Precip. probability: 6%
  • Precipitation: 0"
  • 6:04 am 8:06 pm PDT
FriMay 9.
  • 72°F
  • 48°F
Sunny
Sunny
  • Wind: 8mph NW
  • Humidity: 56%
  • UV index: 9
  • Precip. probability: 4%
  • Precipitation: 0"
  • 6:03 am 8:07 pm PDT
SatMay 10.
  • 70°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph WNW
  • Humidity: 59%
  • UV index: 9
  • Precip. probability: 4%
  • Precipitation: 0"
  • 6:02 am 8:08 pm PDT
SunMay 11.
  • 63°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph WNW
  • Humidity: 66%
  • UV index: 9
  • Precip. probability: 5%
  • Precipitation: 0"
  • 6:01 am 8:09 pm PDT
Over the next ten days, a combination of cloudy and clear weather is predicted.
Rain is not expected in Portola Valley in the upcoming period.
Temperature differences will be noticeable across the forecast period. The maximum temperature will vary between 53.6°F and 77°F, while fluctuations in the night’s lowest temperature will be minimal, as night temperatures will lie between 44.6°F and 50°F.
The warmest day will be Monday, with a maximum of 77°F; the lowest daytime temperature of the period will be reached on Saturday, peaking at 53.6°F.
Updated: May 2, 2025 @ 19:40:30 UTC
Published by: Weather U.S. | About Us
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Weather Forecasting & Climate
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