Hourly Weather Forecast - Castro Valley, CA

12 AM
47°F
0%
6mph
ENE
Clear
Humidity
75%
Feels like
43°F
Dew Point
39°F
1 AM
46°F
0%
6mph
ENE
Clear
Humidity
75%
Feels like
43°F
Dew Point
39°F
2 AM
46°F
0%
6mph
ENE
Clear
Humidity
75%
Feels like
42°F
Dew Point
38°F
3 AM
45°F
0%
7mph
ENE
Clear
Humidity
76%
Feels like
41°F
Dew Point
38°F
4 AM
45°F
0%
7mph
ENE
Clear
Humidity
76%
Feels like
41°F
Dew Point
37°F
5 AM
44°F
0%
7mph
ENE
Clear
Humidity
76%
Feels like
40°F
Dew Point
37°F
6 AM
44°F
0%
7mph
ENE
Mostly Clear
Humidity
77%
Feels like
40°F
Dew Point
38°F
7 AM
45°F
0%
7mph
ENE
Mostly Clear
Humidity
76%
Feels like
42°F
Dew Point
38°F
7:22 AM
8 AM
48°F
0%
7mph
ENE
Mostly Sunny
Humidity
72%
Feels like
45°F
Dew Point
40°F
9 AM
53°F
0%
7mph
ENE
Sunny
Humidity
65%
Feels like
53°F
Dew Point
41°F
10 AM
57°F
0%
7mph
ENE
Sunny
Humidity
59%
Feels like
57°F
Dew Point
43°F
11 AM
61°F
0%
7mph
ENE
Sunny
Humidity
54%
Feels like
61°F
Dew Point
44°F
12 PM
63°F
0%
8mph
ENE
Sunny
Humidity
51%
Feels like
63°F
Dew Point
45°F
1 PM
64°F
0%
8mph
ENE
Sunny
Humidity
49%
Feels like
64°F
Dew Point
45°F
2 PM
65°F
0%
8mph
ENE
Sunny
Humidity
49%
Feels like
65°F
Dew Point
45°F
3 PM
63°F
0%
8mph
NE
Mostly Sunny
Humidity
51%
Feels like
63°F
Dew Point
45°F
4 PM
61°F
0%
8mph
NE
Mostly Sunny
Humidity
55%
Feels like
61°F
Dew Point
45°F
5 PM
58°F
0%
7mph
NE
Mostly Sunny
Humidity
60%
Feels like
58°F
Dew Point
44°F
5:13 PM
6 PM
55°F
0%
7mph
ENE
Mostly Clear
Humidity
64%
Feels like
55°F
Dew Point
43°F
7 PM
53°F
0%
6mph
ENE
Clear
Humidity
67%
Feels like
53°F
Dew Point
42°F
8 PM
52°F
0%
6mph
ENE
Clear
Humidity
69%
Feels like
52°F
Dew Point
42°F
9 PM
51°F
0%
6mph
ENE
Clear
Humidity
70%
Feels like
51°F
Dew Point
41°F
10 PM
50°F
0%
6mph
ENE
Clear
Humidity
72%
Feels like
50°F
Dew Point
41°F
11 PM
49°F
0%
6mph
ENE
Clear
Humidity
73%
Feels like
47°F
Dew Point
41°F

Wednesday's Weather Outlook

Wednesday's Weather Outlook

It will be a tale of two seasons on Wednesday, with cold, wintry weather in the East and dry, spring-like weather in the West.

(Image provided by NOAA)

Polar Vortex: What Is It?

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

(Image provided by Pixabay.com)

Before a High Wind Event

Windchill chart

Dangers of Wind Chills

A snow-covered trail in Sparkill, N.Y. (H. Martinez, WeatherBug user)

Top Winter Hiking Destinations

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