Portola Valley, California 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 80°F 27°C Heat Index: 80°F	Observed at: Portola Valley, CA	Elevation: 310 ft | 94 m
	Last Updated: July 29, 5:30 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 80°F | 27°C
	Pressure: 29.34 in | 993.5 mb	Dewpoint: 51°F | 11°C
	Humidity: 37%	Wind: WSW 9 mph | WSW 14 kph
	Feels Like: 76°F | 24°C	Visibility: 100.3 mi | 161.4 km
	Lat/Long: 37.3839 | -122.2358	Sunrise: 6:11 AM   Sunset: 8:19 PM

7 Day Graphical Forecast

Valid: 5:32 PM 7/29/2026

Today Partly Cloudy 81 |56 °F 27 |13 °C 1% Chance Precipitation Thursday Clear 86 |58 °F 30 |14 °C 0% Chance Precipitation Friday Overcast 87 |52 °F 31 |11 °C 0% Chance Precipitation Saturday Overcast 87 |53 °F 31 |11 °C 0% Chance Precipitation Sunday Overcast 88 |52 °F 31 |11 °C 0% Chance Precipitation Monday Clear 93 |51 °F 34 |11 °C 0% Chance Precipitation Tuesday Clear 95 |56 °F 35 |13 °C 0% Chance Precipitation

7 Hour Graphical Forecast

Valid: 5:32 PM 7/29/2026

5 PM Clear 80 °F 1% Chance Precipitation

6 PM Clear 78 °F 0% Chance Precipitation

7 PM Clear 75 °F 1% Chance Precipitation

8 PM Clear 71 °F 1% Chance Precipitation

9 PM Clear 68 °F 0% Chance Precipitation

10 PM Clear 64 °F 0% Chance Precipitation

11 PM Clear 62 °F 0% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Portola Valley, CA - (Fahrenheit & Celsius) Valid: 5:32 PM 7/29/2026 Today Partly Cloudy with a high near 81°F [27°C]. WSW wind to around 12 mph [19 kph], with gusts to near 15 mph [23 kph]. Dewpoint near 51°F [11°C] with humidity of 84%. Pressure around 29.34 in [993.5 mb]. UV Index: 8.1. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Tonight Partly Cloudy with a low around 56°F [13°C]. WSW wind to around 12 mph [19 kph], with gusts to near 15 mph [23 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Clear with a high near 86°F [30°C]. WSW wind to around 11 mph [17 kph], with gusts to near 15 mph [24 kph]. Dewpoint near 51°F [11°C] with humidity of 66%. Pressure around 29.34 in [993.5 mb]. UV Index: 8.15. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Night Clear with a low around 58°F [14°C]. WSW wind to around 11 mph [17 kph], with gusts to near 15 mph [24 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 87°F [31°C]. WSW wind to around 8 mph [13 kph], with gusts to near 11 mph [17 kph]. Dewpoint near 51°F [11°C] with humidity of 99%. Pressure around 29.34 in [993.5 mb]. UV Index: 8.15. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 52°F [11°C]. WSW wind to around 8 mph [13 kph], with gusts to near 11 mph [17 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Saturday Overcast with a high near 87°F [31°C]. WSW wind to around 8 mph [13 kph], with gusts to near 10 mph [16 kph]. Dewpoint near 51°F [11°C] with humidity of 99%. Pressure around 29.34 in [993.5 mb]. UV Index: 8.05. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Saturday Night Overcast with a low around 53°F [11°C]. WSW wind to around 8 mph [13 kph], with gusts to near 10 mph [16 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Sunday Overcast with a high near 88°F [31°C]. WSW wind to around 7 mph [12 kph], with gusts to near 9 mph [15 kph]. Dewpoint near 51°F [11°C] with humidity of 98%. Pressure around 29.34 in [993.5 mb]. UV Index: 8.1. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 52°F [11°C]. WSW wind to around 7 mph [12 kph], with gusts to near 9 mph [15 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Monday Clear with a high near 93°F [34°C]. WSW wind to around 7 mph [12 kph], with gusts to near 9 mph [14 kph]. Dewpoint near 51°F [11°C] with humidity of 93%. Pressure around 29.34 in [993.5 mb]. UV Index: 7.95. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Monday Night Clear with a low around 51°F [11°C]. WSW wind to around 7 mph [12 kph], with gusts to near 9 mph [14 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Tuesday Clear with a high near 95°F [35°C]. W wind to around 7 mph [12 kph], with gusts to near 9 mph [14 kph]. Dewpoint near 51°F [11°C] with humidity of 80%. Pressure around 29.34 in [993.5 mb]. UV Index: 7.95. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Tuesday Night Clear with a low around 56°F [13°C]. W wind to around 7 mph [12 kph], with gusts to near 9 mph [14 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Portola Valley, CA

Today: 0.0 mm | 0.00 in

Tonight: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.0 mm | 0.00 in

Saturday Night: 0.0 mm | 0.00 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

Monday: 0.0 mm | 0.00 in

Monday Night: 0.0 mm | 0.00 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

7 Day and Night - Maximum Wind Speed Forecast for Portola Valley, CA

Today: WSW @ 19 kph | 12 mph

Tonight: WSW @ 19 kph | 12 mph

Thursday: WSW @ 17 kph | 11 mph

Thursday Night: WSW @ 17 kph | 11 mph

Friday: WSW @ 13 kph | 8 mph

Friday Night: WSW @ 13 kph | 8 mph

Saturday: WSW @ 13 kph | 8 mph

Saturday Night: WSW @ 13 kph | 8 mph

Sunday: WSW @ 12 kph | 7 mph

Sunday Night: WSW @ 12 kph | 7 mph

Monday: WSW @ 12 kph | 7 mph

Monday Night: WSW @ 12 kph | 7 mph

Tuesday: W @ 12 kph | 7 mph

Tuesday Night: W @ 12 kph | 7 mph

7 Day and Night - Maximum Humidity Forecast for Portola Valley, CA

Today: 84 %

Tonight: 84 %

Thursday: 66 %

Thursday Night: 66 %

Friday: 99 %

Friday Night: 99 %

Saturday: 99 %

Saturday Night: 99 %

Sunday: 98 %

Sunday Night: 98 %

Monday: 93 %

Monday Night: 93 %

Tuesday: 80 %

Tuesday Night: 80 %

7 Day and Night - Snowfall Totals Forecast for Portola Valley, CA

Today: 0.0 cm | 0.00 in

Tonight: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

Monday: 0.0 cm | 0.00 in

Monday Night: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

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