Hourly Weather Forecast - Castro Valley, CA

12 AM
47°F
0%
6mph
NW
Clear
Humidity
77%
Feels like
44°F
Dew Point
40°F
1 AM
46°F
0%
6mph
NNW
Clear
Humidity
80%
Feels like
43°F
Dew Point
40°F
2 AM
45°F
0%
6mph
NNW
Clear
Humidity
79%
Feels like
42°F
Dew Point
39°F
3 AM
44°F
0%
6mph
N
Mostly Clear
Humidity
75%
Feels like
41°F
Dew Point
37°F
4 AM
44°F
0%
6mph
N
Mostly Clear
Humidity
69%
Feels like
40°F
Dew Point
34°F
5 AM
44°F
0%
7mph
NNE
Mostly Clear
Humidity
65%
Feels like
40°F
Dew Point
32°F
6 AM
44°F
0%
7mph
NNE
Mostly Clear
Humidity
61%
Feels like
39°F
Dew Point
31°F
6:50 AM
7 AM
45°F
0%
7mph
NNE
Sunny
Humidity
57%
Feels like
41°F
Dew Point
31°F
8 AM
49°F
0%
7mph
NNE
Sunny
Humidity
52%
Feels like
45°F
Dew Point
32°F
9 AM
54°F
0%
8mph
NNE
Sunny
Humidity
44%
Feels like
54°F
Dew Point
33°F
10 AM
60°F
0%
9mph
NNE
Sunny
Humidity
36%
Feels like
60°F
Dew Point
32°F
11 AM
65°F
0%
10mph
NNE
Sunny
Humidity
30%
Feels like
65°F
Dew Point
32°F
12 PM
69°F
0%
10mph
NNE
Sunny
Humidity
28%
Feels like
69°F
Dew Point
34°F
1 PM
72°F
0%
10mph
N
Sunny
Humidity
25%
Feels like
72°F
Dew Point
35°F
2 PM
74°F
0%
10mph
N
Sunny
Humidity
24%
Feels like
74°F
Dew Point
35°F
3 PM
76°F
0%
10mph
N
Sunny
Humidity
23%
Feels like
76°F
Dew Point
35°F
4 PM
76°F
0%
10mph
N
Sunny
Humidity
23%
Feels like
76°F
Dew Point
35°F
5 PM
73°F
0%
9mph
N
Sunny
Humidity
25%
Feels like
73°F
Dew Point
35°F
6 PM
69°F
0%
8mph
N
Sunny
Humidity
30%
Feels like
69°F
Dew Point
37°F
7 PM
65°F
0%
7mph
NNW
Sunny
Humidity
36%
Feels like
65°F
Dew Point
38°F
7:32 PM
8 PM
62°F
0%
6mph
NNW
Clear
Humidity
42%
Feels like
62°F
Dew Point
38°F
9 PM
58°F
0%
6mph
NNW
Clear
Humidity
47%
Feels like
58°F
Dew Point
38°F
10 PM
56°F
0%
5mph
NW
Clear
Humidity
51%
Feels like
56°F
Dew Point
38°F
11 PM
54°F
0%
5mph
NW
Clear
Humidity
54%
Feels like
54°F
Dew Point
38°F

Monday's Weather Outlook

Monday's Weather Outlook

Unsettled weather interrupts the beginning of the work week for many across the Nation this Monday.

Weekly Drought Map for March 26, 2026

Extreme Weather Leads To A Mix Of Drought Development & Relief

Severe storm moving over the Texas Panhandle

What Is A Severe Thunderstorm?

(Image provided by Pixabay.com)

Sun Safety: Protect Your Skin During Spring

Featured image via Pixabay.com

Drought Impacts: It's More Than You Think!

Pile of hail after a hail storm hits Perth.

How Does Hail Form?

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide