Portola Valley, CA Weather Forecast
San Mateo County, California
Live radar, warnings and storm tracking for Portola Valley, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Portola Valley
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Portola Valley, CA at a glance
Portola Valley is home to about 4,204 people in San Mateo County, across 9.1 square miles. It ranks 435th by population of 450 places in California with a forecast here. The nearest neighbour with its own forecast is Woodside, 4 miles away.
- County
- San Mateo County
- Population
- 4,204 2023 est.
- Land area
- 9.1 sq mi
- People per sq mi
- 463
- Forecast point
- 37.3652°N, 122.2327°W
How well can the network see Portola Valley?
The nearest Doppler radar is KMUX (San Francisco, CA), to the SE. Its lowest scan passes about 1,400 ft above Portola Valley. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Portola Valley show up clearly. Portola Valley is closer to its radar than 80% of US cities.
The closest weather station is KPAO (Palo Alto Arpt). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Portola Valley
- Woodside, CA4 mi
- Los Altos Hills, CA5 mi
- Palo Alto, CA5 mi
- Atherton, CA7 mi
- Los Altos, CA7 mi
- Mountain View, CA9 mi
- East Palo Alto, CA9 mi
- Menlo Park, CA9 mi
Elsewhere in California
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