Hourly Weather Forecast - Portola Valley, CA

12 AM
48°F
0%
3mph
NNW
Partly Cloudy
Humidity
85%
Feels like
47°F
Dew Point
44°F
1 AM
47°F
0%
3mph
NNW
Partly Cloudy
Humidity
83%
Feels like
46°F
Dew Point
43°F
2 AM
47°F
0%
3mph
NNW
Partly Cloudy
Humidity
80%
Feels like
45°F
Dew Point
41°F
3 AM
46°F
0%
3mph
NNW
Mostly Clear
Humidity
76%
Feels like
45°F
Dew Point
39°F
4 AM
46°F
0%
3mph
N
Mostly Clear
Humidity
74%
Feels like
45°F
Dew Point
38°F
5 AM
45°F
0%
3mph
N
Mostly Clear
Humidity
72%
Feels like
45°F
Dew Point
37°F
6 AM
45°F
0%
2mph
N
Clear
Humidity
70%
Feels like
45°F
Dew Point
36°F
6:33 AM
7 AM
48°F
0%
2mph
N
Mostly Sunny
Humidity
66%
Feels like
48°F
Dew Point
37°F
8 AM
53°F
0%
2mph
N
Mostly Sunny
Humidity
62%
Feels like
53°F
Dew Point
40°F
9 AM
58°F
0%
3mph
N
Sunny
Humidity
51%
Feels like
58°F
Dew Point
40°F
10 AM
62°F
0%
4mph
N
Sunny
Humidity
41%
Feels like
62°F
Dew Point
39°F
11 AM
66°F
0%
5mph
N
Sunny
Humidity
35%
Feels like
66°F
Dew Point
38°F
12 PM
68°F
0%
7mph
N
Sunny
Humidity
31%
Feels like
68°F
Dew Point
37°F
1 PM
69°F
0%
8mph
N
Sunny
Humidity
30%
Feels like
69°F
Dew Point
37°F
2 PM
70°F
0%
8mph
N
Sunny
Humidity
30%
Feels like
70°F
Dew Point
37°F
3 PM
70°F
0%
8mph
N
Sunny
Humidity
32%
Feels like
70°F
Dew Point
38°F
4 PM
68°F
0%
7mph
NNW
Sunny
Humidity
35%
Feels like
68°F
Dew Point
40°F
5 PM
65°F
0%
6mph
NNW
Sunny
Humidity
43%
Feels like
65°F
Dew Point
42°F
6 PM
62°F
0%
6mph
NNW
Sunny
Humidity
49%
Feels like
62°F
Dew Point
42°F
6:07 PM
7 PM
59°F
0%
5mph
NNW
Clear
Humidity
54%
Feels like
59°F
Dew Point
43°F
8 PM
57°F
0%
5mph
N
Clear
Humidity
58%
Feels like
57°F
Dew Point
43°F
9 PM
56°F
0%
4mph
N
Clear
Humidity
61%
Feels like
56°F
Dew Point
43°F
10 PM
55°F
0%
4mph
N
Clear
Humidity
62%
Feels like
55°F
Dew Point
42°F
11 PM
54°F
0%
4mph
N
Clear
Humidity
62%
Feels like
54°F
Dew Point
41°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

Monday'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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