Hourly Weather Forecast - Castro Valley, CA

12 AM
52°F
0%
6mph
NNE
Clear
Humidity
72%
Feels like
52°F
Dew Point
43°F
1 AM
51°F
0%
6mph
NNE
Clear
Humidity
73%
Feels like
51°F
Dew Point
43°F
2 AM
50°F
0%
6mph
NNE
Clear
Humidity
73%
Feels like
50°F
Dew Point
42°F
3 AM
50°F
0%
6mph
NNE
Clear
Humidity
73%
Feels like
47°F
Dew Point
42°F
4 AM
50°F
0%
6mph
NNE
Clear
Humidity
71%
Feels like
47°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 today 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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