Portola Valley, CA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Portola Valley now
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Portola Valley weather by the hour
Portola Valley weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Portola Valley.
This week in Portola Valley
Sunrise, sunset and moon in Portola Valley
What is the weather usually like in Portola Valley?
Köppen climate classification, calculated from the 1991–2020 normals
- Augustwarmest month · 89°F average high
- Decembercoldest month · 37°F average low
- 43.6 inprecipitation per year · 1,108 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Portola Valley: April to June and October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station WOODSIDE FIRE STN 1, CA US (USC00049792), adjusted for the elevation of Portola Valley.
Portola Valley weather month by month
Sunrise and sunset in Portola Valley through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:20 AM | 5:16 PM | 9 h 56 min |
| February | 6:56 AM | 5:49 PM | 10 h 53 min |
| March | 7:17 AM | 7:17 PM | 11 h 59 min |
| April | 6:32 AM | 7:45 PM | 13 h 13 min |
| May | 5:58 AM | 8:12 PM | 14 h 14 min |
| June | 5:46 AM | 8:32 PM | 14 h 46 min |
| July | 5:59 AM | 8:30 PM | 14 h 31 min |
| August | 6:24 AM | 8:02 PM | 13 h 38 min |
| September | 6:49 AM | 7:18 PM | 12 h 28 min |
| October | 7:15 AM | 6:33 PM | 11 h 17 min |
| November | 6:47 AM | 4:59 PM | 10 h 12 min |
| December | 7:14 AM | 4:53 PM | 9 h 39 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in Portola Valley?
Portola Valley has a warm-summer mediterranean climate. The warmest month is August, with an average high of 89°F (31°C), and the coldest is December, with average lows of 37°F (3°C).
It gets about 43.6 inches (1,108 mm) of precipitation a year. The wettest month is December and the driest is July.
The best time to visit Portola Valley is April to June and October. At 459 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Portola Valley
Weather in towns near Portola Valley
Questions about the weather in Portola Valley
What is the hottest month in Portola Valley?
August, with an average high of 89°F (31°C).
What is the coldest month in Portola Valley?
December, with an average low of 37°F (3°C).
How much does it rain in Portola Valley?
About 43.6 inches (1,108 mm) a year; the wettest month is December.
Does it snow in Portola Valley?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Portola Valley?
April to June and October, when temperatures are most pleasant and rainy days are fewer.
What climate does Portola Valley have?
Warm-summer mediterranean (Köppen Csb).
What is the weather like in Portola Valley in November?
Highs average 68°F and lows 40°F, with about 4.5 inches of precipitation.
What time is sunrise in Portola Valley?
Around 6:47 AM in mid-November, and sunset around 4:59 PM. Today’s exact times are shown above.
Where does this Portola Valley weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Portola Valley.
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