Hourly Weather Forecast - Portola Valley, CA

12 AM
48°F
0%
2mph
WNW
Mostly Cloudy
Humidity
97%
Feels like
48°F
Dew Point
47°F
1 AM
47°F
0%
3mph
WNW
Mostly Cloudy
Humidity
98%
Feels like
47°F
Dew Point
47°F
2 AM
47°F
0%
3mph
WNW
Mostly Cloudy
Humidity
98%
Feels like
46°F
Dew Point
46°F
3 AM
47°F
0%
4mph
WNW
Mostly Cloudy
Humidity
97%
Feels like
45°F
Dew Point
46°F
4 AM
47°F
0%
4mph
WNW
Cloudy
Humidity
97%
Feels like
46°F
Dew Point
46°F
5 AM
47°F
0%
4mph
WNW
Mostly Cloudy
Humidity
95%
Feels like
46°F
Dew Point
46°F
6 AM
48°F
0%
3mph
WNW
Partly Cloudy
Humidity
93%
Feels like
48°F
Dew Point
46°F
6:36 AM
7 AM
51°F
10%
3mph
WNW
Partly Cloudy
Humidity
92%
Feels like
51°F
Dew Point
48°F
8 AM
55°F
20%
4mph
WNW
Partly Cloudy
Humidity
88%
Feels like
55°F
Dew Point
51°F
9 AM
58°F
20%
5mph
NW
Mostly Cloudy
Humidity
77%
Feels like
58°F
Dew Point
51°F
10 AM
61°F
20%
6mph
NW
Mostly Cloudy
Humidity
69%
Feels like
61°F
Dew Point
51°F
11 AM
62°F
20%
7mph
NW
Mostly Cloudy
Humidity
62%
Feels like
62°F
Dew Point
49°F
12 PM
63°F
20%
8mph
NW
Partly Cloudy
Humidity
56%
Feels like
63°F
Dew Point
47°F
1 PM
63°F
10%
9mph
NW
Partly Cloudy
Humidity
55%
Feels like
63°F
Dew Point
46°F
2 PM
62°F
10%
10mph
NW
Partly Cloudy
Humidity
55%
Feels like
62°F
Dew Point
46°F
3 PM
61°F
0%
10mph
NW
Mostly Sunny
Humidity
55%
Feels like
61°F
Dew Point
44°F
4 PM
59°F
0%
10mph
NW
Sunny
Humidity
57%
Feels like
59°F
Dew Point
43°F
5 PM
56°F
0%
10mph
NW
Sunny
Humidity
68%
Feels like
56°F
Dew Point
46°F
6 PM
54°F
0%
9mph
NW
Sunny
Humidity
71%
Feels like
54°F
Dew Point
45°F
6:05 PM
7 PM
52°F
0%
8mph
NW
Clear
Humidity
74%
Feels like
52°F
Dew Point
44°F
8 PM
51°F
0%
7mph
NW
Mostly Clear
Humidity
76%
Feels like
51°F
Dew Point
44°F
9 PM
50°F
0%
6mph
NW
Mostly Clear
Humidity
77%
Feels like
50°F
Dew Point
43°F
10 PM
49°F
0%
6mph
NW
Mostly Clear
Humidity
77%
Feels like
47°F
Dew Point
42°F
11 PM
48°F
0%
5mph
NW
Partly Cloudy
Humidity
78%
Feels like
46°F
Dew Point
42°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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