Hourly Weather Forecast - Portola Valley, CA

12 AM
51°F
10%
1mph
SW
Partly Cloudy
Humidity
90%
Feels like
51°F
Dew Point
48°F
1 AM
50°F
0%
2mph
SW
Partly Cloudy
Humidity
92%
Feels like
50°F
Dew Point
48°F
2 AM
49°F
10%
2mph
SW
Partly Cloudy
Humidity
92%
Feels like
49°F
Dew Point
47°F
3 AM
49°F
10%
2mph
SW
Partly Cloudy
Humidity
93%
Feels like
49°F
Dew Point
47°F
4 AM
48°F
10%
2mph
SW
Mostly Cloudy
Humidity
95%
Feels like
48°F
Dew Point
47°F
5 AM
48°F
10%
2mph
SW
Partly Cloudy
Humidity
95%
Feels like
48°F
Dew Point
47°F
6 AM
49°F
10%
1mph
SW
Mostly Cloudy
Humidity
95%
Feels like
49°F
Dew Point
47°F
6:38 AM
7 AM
51°F
10%
1mph
SW
Mostly Cloudy
Humidity
93%
Feels like
51°F
Dew Point
49°F
8 AM
55°F
30%
1mph
SSW
30% Chance Rain Showers
Humidity
89%
Feels like
55°F
Dew Point
51°F
9 AM
58°F
10%
1mph
SSE
Mostly Cloudy
Humidity
78%
Feels like
58°F
Dew Point
51°F
10 AM
61°F
10%
1mph
SSE
Partly Cloudy
Humidity
70%
Feels like
61°F
Dew Point
51°F
11 AM
62°F
10%
1mph
SW
Partly Cloudy
Humidity
67%
Feels like
62°F
Dew Point
51°F
12 PM
62°F
10%
2mph
WNW
Partly Cloudy
Humidity
64%
Feels like
62°F
Dew Point
50°F
1 PM
63°F
10%
2mph
WNW
Partly Cloudy
Humidity
65%
Feels like
63°F
Dew Point
51°F
2 PM
62°F
10%
3mph
WNW
Partly Cloudy
Humidity
66%
Feels like
62°F
Dew Point
51°F
3 PM
62°F
0%
4mph
WNW
Partly Cloudy
Humidity
67%
Feels like
62°F
Dew Point
50°F
4 PM
60°F
0%
4mph
WNW
Partly Cloudy
Humidity
68%
Feels like
60°F
Dew Point
49°F
5 PM
58°F
0%
4mph
WNW
Partly Cloudy
Humidity
80%
Feels like
58°F
Dew Point
52°F
6 PM
55°F
0%
4mph
WNW
Partly Cloudy
Humidity
84%
Feels like
55°F
Dew Point
51°F
6:03 PM
7 PM
53°F
0%
3mph
W
Partly Cloudy
Humidity
88%
Feels like
53°F
Dew Point
50°F
8 PM
52°F
0%
3mph
W
Partly Cloudy
Humidity
92%
Feels like
52°F
Dew Point
49°F
9 PM
51°F
0%
2mph
WNW
Cloudy
Humidity
94%
Feels like
51°F
Dew Point
49°F
10 PM
49°F
0%
2mph
WNW
Cloudy
Humidity
97%
Feels like
49°F
Dew Point
49°F
11 PM
49°F
0%
2mph
WNW
Cloudy
Humidity
98%
Feels like
49°F
Dew Point
48°F

Snow and Ice Accumulations through Tuesday AM

Wintry Disturbance Bisects U.S. Mid-Latitudes

A wintry disturbance will bring icing and light snow from the central Plains tonight through the Northeast on Tuesday.

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for February 26, 2026

Widespread Drought Degradation For South, Southeast; Mixed Results Elsewhere

Debris flies through the air as howling winds accompanied by a line of storms approach the old Tarrant County Courthouse in downtown Fort Worth, Texas, on March 2, 2023. (Tom Fox/The Dallas Morning News via AP)

Lightning Season Rapidly Approaching: Best Safety Practices

Rocky Mountain National Park at day in December. (NPS Natural Resources/Wikimedia Commons)

Snowmelt and Flooding

U.S. Route 52 near St. Donatus between Bellevue and Dubuque, Iowa. (Tony Webster from Portland, Oregon)

Winter Weather Driving Safety Tips

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