Local weather forecast

Weather in Portola Valley, CA

Updated 2026-08-11 10:00 local time · ZIP codes 94028

Sunny
Now63°F

Sunny

High / Low85° / 53°
Rain chance6%
Wind4 mph
Weather alerts

Active alerts

3
Small Craft Advisory issued August 11 at 2:44AM PDT until August 12 at 3:00PM PDT by NWS San Francisco CA

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 11 ft expected. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...From 9 PM this evening to 3 PM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft.

Safety instructions

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Small Craft Advisory issued August 11 at 2:44AM PDT until August 11 at 3:00AM PDT by NWS San Francisco CA

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 11 ft expected. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...From 9 PM this evening to 3 PM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft.

Safety instructions

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Small Craft Advisory issued August 11 at 8:50AM PDT until August 12 at 3:00PM PDT by NWS San Francisco CA

* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 7 to 11 ft expected. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...From 9 PM this evening to 3 PM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft.

Safety instructions

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Hourly

Next hours

NowSunny63°4% rain
11 AMSunny75°4% rain
12 PMSunny82°3% rain
1 PMSunny85°2% rain
2 PMSunny85°2% rain
3 PMSunny84°2% rain
4 PMSunny82°3% rain
5 PMSunny81°3% rain
6 PMSunny79°3% rain
7 PMSunny75°4% rain
8 PMSunny68°4% rain
9 PMClear66°6% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
85° 53°Sunny
Rain 6%Gust 7 mph
Tomorrow2026-08-12
Sunny
75° 53°Sunny
Rain 12%Gust 9 mph
Thursday2026-08-13
Patchy rain nearby
70° 55°Patchy rain nearby
Rain 23%Gust 11 mph
Conditions

Weather details

Feels like63°F
Humidity73%
Pressure29.98 inHg
Visibility10 mi
Wind4 mph WSW
Wind gusts4 mph
Precipitation0.00 in
UV index4
Daylight

Sunrise, sunset and moon

Sunrise06:21 AM
Sunset08:06 PM
Moonrise04:34 AM
Moon phaseNew Moon
Practical guide

Weather insights for today

Umbrella not essential

Rain chance stays relatively low over the next 12 hours (up to 6%).

Light layers should work

It feels like 63°F with winds near 4 mph.

Best window: 8 PM

68°F, 4% rain chance and 5 mph wind.

Driving conditions look generally normal

Visibility is around 10 mi; gusts may reach 10 mph.

Good conditions for an easy run

Current temperature is 63°F, wind 4 mph, rain chance up to 6%.

Moderate UV protection recommended

UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.

Portola Valley weather today

Sunny and 63°F in Portola Valley, CA. Today's high is 85°F with a 6% rain chance. Winds are around 4 mph with gusts near 4 mph. Relative humidity is 73%, pressure is 29.98 inHg, and visibility is about 10 miles.

Tonight and tomorrow in Portola Valley

Sunrise is at 06:21 AM and sunset is at 08:06 PM. Tomorrow's forecast calls for Sunny with a high near 75°F and a low near 53°F. The maximum rain chance is 12%.

Nearby

Weather near Portola Valley

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