Hourly Weather Forecast - Portola Valley, CA

12 AM
40°F
10%
1mph
WSW
Foggy
Humidity
100%
Feels like
40°F
Dew Point
40°F
1 AM
40°F
10%
1mph
WSW
Foggy
Humidity
100%
Feels like
40°F
Dew Point
40°F
2 AM
40°F
10%
1mph
WSW
Foggy
Humidity
100%
Feels like
40°F
Dew Point
40°F
3 AM
40°F
10%
0mph
W
Foggy
Humidity
100%
Feels like
40°F
Dew Point
40°F
4 AM
41°F
10%
0mph
ESE
Foggy
Humidity
100%
Feels like
41°F
Dew Point
41°F
5 AM
41°F
0%
0mph
S
Hazy
Humidity
97%
Feels like
41°F
Dew Point
41°F
6 AM
42°F
0%
1mph
SSE
Hazy
Humidity
92%
Feels like
42°F
Dew Point
40°F
7 AM
44°F
0%
1mph
SSE
Mostly Clear
Humidity
90%
Feels like
44°F
Dew Point
41°F
7:17 AM
8 AM
45°F
0%
1mph
SSE
Partly Cloudy
Humidity
95%
Feels like
45°F
Dew Point
44°F
9 AM
47°F
0%
1mph
ESE
Partly Cloudy
Humidity
93%
Feels like
47°F
Dew Point
45°F
10 AM
49°F
0%
1mph
NE
Partly Cloudy
Humidity
88%
Feels like
49°F
Dew Point
46°F
11 AM
52°F
0%
1mph
NNE
Partly Cloudy
Humidity
83%
Feels like
52°F
Dew Point
47°F
12 PM
54°F
0%
2mph
N
Mostly Cloudy
Humidity
76%
Feels like
54°F
Dew Point
46°F
1 PM
55°F
0%
2mph
N
Mostly Cloudy
Humidity
72%
Feels like
55°F
Dew Point
46°F
2 PM
54°F
0%
2mph
N
Mostly Cloudy
Humidity
72%
Feels like
54°F
Dew Point
46°F
3 PM
53°F
0%
2mph
N
Mostly Cloudy
Humidity
77%
Feels like
53°F
Dew Point
46°F
4 PM
51°F
0%
2mph
N
Mostly Cloudy
Humidity
86%
Feels like
51°F
Dew Point
47°F
4:53 PM
5 PM
48°F
0%
1mph
N
Mostly Cloudy
Humidity
90%
Feels like
48°F
Dew Point
45°F
6 PM
46°F
0%
1mph
WNW
Mostly Cloudy
Humidity
92%
Feels like
46°F
Dew Point
44°F
7 PM
44°F
0%
1mph
W
Cloudy
Humidity
95%
Feels like
44°F
Dew Point
43°F
8 PM
43°F
0%
1mph
WSW
Cloudy
Humidity
97%
Feels like
43°F
Dew Point
42°F
9 PM
43°F
0%
1mph
WSW
Cloudy
Humidity
97%
Feels like
43°F
Dew Point
42°F
10 PM
42°F
0%
1mph
SW
Cloudy
Humidity
97%
Feels like
42°F
Dew Point
42°F
11 PM
42°F
0%
1mph
SW
Cloudy
Humidity
97%
Feels like
42°F
Dew Point
42°F

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A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

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A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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