Current Weather Forecast for Castro Valley

CA 94546  |   4:27am

Weather Conditions

57°

Feels Like 57°

Clear

55° 84°

0

UV Index

Good

Air Quality

W 3 mph

Wind

0 in

rain

Today

Sun 8/2

84°

Highest Temperature

3%

Sunny. High 84F. Winds W at 10 to 15 mph.

Tonight

Sun 8/2

56°

Lowest Temperature

19%

Clear to partly cloudy. Low 56F. Winds WNW at 5 to 10 mph.

Tomorrow

Mon 8/3

85°

Highest Temperature

19%

Mostly sunny. High near 85F. Winds WNW at 10 to 15 mph.

Next 12 Hours Next 7 Days

Next 12 Hours Forecast in Castro Valley

Hourly Weather Forecast & Temperature

5AM

3%

57°

Feels Like 57°

Partly Cloudy

WSW 3 mph

Wind

1012 mb

Pressure

91%

Humidity

0

UV Index

9mi

Visibility

33%

Cloud Cover

6AM

3%

57°

Feels Like 57°

Mostly Clear

WSW 2 mph

Wind

1012 mb

Pressure

93%

Humidity

0

UV Index

8mi

Visibility

23%

Cloud Cover

7AM

3%

57°

Feels Like 57°

Mostly Sunny

W 2 mph

Wind

1013 mb

Pressure

92%

Humidity

0

UV Index

8mi

Visibility

23%

Cloud Cover

8AM

2%

60°

Feels Like 60°

Sunny

WSW 3 mph

Wind

1013 mb

Pressure

82%

Humidity

1

UV Index

8mi

Visibility

19%

Cloud Cover

9AM

1%

64°

Feels Like 64°

Sunny

WSW 3 mph

Wind

1013 mb

Pressure

73%

Humidity

2

UV Index

10mi

Visibility

8%

Cloud Cover

10AM

1%

68°

Feels Like 68°

Sunny

W 4 mph

Wind

1012 mb

Pressure

63%

Humidity

4

UV Index

10mi

Visibility

3%

Cloud Cover

11AM

74°

Feels Like 74°

Sunny

W 5 mph

Wind

1012 mb

Pressure

52%

Humidity

7

UV Index

10mi

Visibility

2%

Cloud Cover

12PM

77°

Feels Like 77°

Sunny

W 6 mph

Wind

1012 mb

Pressure

47%

Humidity

9

UV Index

10mi

Visibility

0%

Cloud Cover

1PM

80°

Feels Like 81°

Sunny

W 8 mph

Wind

1011 mb

Pressure

41%

Humidity

10

UV Index

10mi

Visibility

1%

Cloud Cover

2PM

82°

Feels Like 82°

Sunny

WNW 9 mph

Wind

1010 mb

Pressure

38%

Humidity

9

UV Index

10mi

Visibility

0%

Cloud Cover

3PM

82°

Feels Like 82°

Sunny

WNW 10 mph

Wind

1010 mb

Pressure

38%

Humidity

8

UV Index

10mi

Visibility

0%

Cloud Cover

4PM

82°

Feels Like 82°

Sunny

WNW 11 mph

Wind

1009 mb

Pressure

38%

Humidity

5

UV Index

10mi

Visibility

0%

Cloud Cover

Sun 8/2

Sun

3%

55°

84°

Mainly sunny. Highs in the mid 80s and lows in the mid 50s.

84°

Feels Like

W 11 mph

Wind

61%

Humidity

10

UV Index

6:13 AM

Sunrise

8:15 PM

Sunset

Mon 8/3

Mon

19%

56°

85°

Sunny. Highs in the mid 80s and lows in the upper 50s.

85°

Feels Like

WNW 12 mph

Wind

50%

Humidity

10

UV Index

6:14 AM

Sunrise

8:14 PM

Sunset

Tue 8/4

Tue

19%

58°

80°

Abundant sunshine. Highs in the low 80s and lows in the upper 50s.

80°

Feels Like

WNW 12 mph

Wind

58%

Humidity

10

UV Index

6:14 AM

Sunrise

8:13 PM

Sunset

Wed 8/5

Wed

6%

58°

78°

Mix of sun and clouds. Highs in the upper 70s and lows in the upper 50s.

78°

Feels Like

WNW 12 mph

Wind

61%

Humidity

10

UV Index

6:15 AM

Sunrise

8:12 PM

Sunset

Thu 8/6

Thu

19%

57°

78°

Times of sun and clouds. Highs in the upper 70s and lows in the upper 50s.

78°

Feels Like

WNW 12 mph

Wind

61%

Humidity

10

UV Index

6:16 AM

Sunrise

8:11 PM

Sunset

Fri 8/7

Fri

5%

58°

80°

Mix of sun and clouds. Highs in the low 80s and lows in the upper 50s.

80°

Feels Like

WNW 12 mph

Wind

58%

Humidity

10

UV Index

6:17 AM

Sunrise

8:10 PM

Sunset

Sat 8/8

Sat

4%

59°

81°

Mainly sunny. Highs in the low 80s and lows in the low 60s.

81°

Feels Like

W 12 mph

Wind

56%

Humidity

10

UV Index

6:18 AM

Sunrise

8:09 PM

Sunset

Sun 8/9

Sun

4%

60°

79°

Abundant sunshine. Highs in the upper 70s and lows in the upper 50s.

79°

Feels Like

W 12 mph

Wind

59%

Humidity

9

UV Index

6:19 AM

Sunrise

8:08 PM

Sunset

Plans up in the air? We'll help you weather-proof them. Get the FREE FOX Weather app.

Download the App

Looking for homes in this area?

• 21062 Gary Dr #107, Hayward, CA 94546
• 20115 Redwood Rd #7, Castro Valley, CA 94546
• 25489 Palomares Rd, Castro Valley, CA 94552

Sponsored by Redfin. Housing data supplied by Redfin independent of FOX Weather.

Latest Stories from California

Watch: Two rattlesnakes ‘dance’ on busy street as Southern California sees spike in bite cases

Video captured in Southern California shows two large rattlesnakes fighting near a storm drain in Thousand Oaks on Tuesday, highlighting a broader, unsettling surge in snake encounters across the region.

Genevieve weakens after becoming first Category 5 in Eastern Pacific since 2024

Genevieve weakened to a Category 1 hurricane Thursday morning after becoming the Eastern Pacific's first Category 5 storm since 2024.

Millions under heat alerts as life-threatening heat dome bakes the West with triple-digit temperatures

The heat dome that has plagued the Central and Southern Plains for the last several days is retreating back to the West, bringing extreme triple-digit temperatures to the Four Corners and Desert Southwest.

Northern California rattled by magnitude 4.3 earthquake along Pacific Ring of Fire

A magnitude 4.3 earthquake rattled Northern California on Tuesday night, marking the latest quake to happen along the Pacific Ring of Fire.

Load More Stories