Castro Valley, CA Hourly Weather

Alameda County8:10 AM PDT37.69°N, 122.09°WElevation 164 ft
Coastal Flood Advisory until 3:00 PM Thu

Next 48 hours

8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Sun Oct 25 2 AM 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Mon Oct 26 2 AM 5 AM 50° 55° 60° 65° 70° 75° %
TemperatureFeels likeChance of precipitationNight
Saturday, October 2416 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds
8 AM Sunny 52° 52° 0% 0.00 in E 2 77% 45° 22%
9 AM Sunny 56° 56° 0% 0.00 in E 2 72% 47° 22%
10 AM Sunny 60° 60° 0% 0.00 in E 2 64% 48° 22%
11 AM Sunny 65° 65° 0% 0.00 in ENE 3 58% 50° 18%
12 PM Sunny 68° 68° 0% 0.00 in ENE 3 51% 49° 18%
1 PM Sunny 71° 71° 0% 0.00 in ENE 3 46% 48° 18%
2 PM Sunny 72° 72° 0% 0.00 in WNW 5 42% 48° 18%
3 PM Sunny 72° 72° 0% 0.00 in WNW 5 42% 48° 18%
4 PM Sunny 72° 72° 0% 0.00 in WNW 5 45% 49° 18%
5 PM Sunny 70° 70° 1% 0.00 in W 6 49% 50° 19%
6 PM Mostly Clear 67° 67° 1% 0.00 in W 6 55% 50° 19%
7 PM Mostly Clear 63° 63° 1% 0.00 in W 6 62% 50° 19%
8 PM Mostly Clear 60° 60° 1% 0.00 in Calm 69% 50° 19%
9 PM Mostly Clear 59° 59° 1% 0.00 in Calm 70% 49° 19%
10 PM Mostly Clear 58° 58° 1% 0.00 in Calm 69% 48° 19%
11 PM Partly Cloudy 58° 58° 3% 0.00 in Calm 67% 47° 33%
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds
12 AM Partly Cloudy 57° 57° 3% 0.00 in Calm 68% 46° 33%
1 AM Partly Cloudy 56° 56° 3% 0.00 in Calm 69% 46° 33%
2 AM Partly Cloudy 55° 55° 3% 0.00 in ESE 1 70% 45° 33%
3 AM Partly Cloudy 55° 55° 3% 0.00 in ESE 1 70% 45° 33%
4 AM Partly Cloudy 55° 55° 3% 0.00 in ESE 1 69% 45° 33%
5 AM Mostly Cloudy 55° 55° 4% 0.00 in E 2 68% 45° 57%
6 AM Partly Sunny 54° 55° 4% 0.00 in E 2 70% 45° 57%
7 AM Partly Sunny 54° 54° 4% 0.00 in E 2 72% 45° 57%
8 AM Partly Sunny 55° 55° 4% 0.00 in E 2 72% 46° 57%
9 AM Partly Sunny 58° 58° 4% 0.00 in E 2 70% 48° 57%
10 AM Partly Sunny 61° 61° 4% 0.00 in E 2 66% 50° 57%
11 AM Mostly Sunny 65° 65° 3% 0.00 in NNW 3 62% 52° 41%
12 PM Mostly Sunny 68° 68° 3% 0.00 in NNW 3 55% 51° 41%
1 PM Mostly Sunny 70° 71° 3% 0.00 in NNW 3 49% 51° 41%
2 PM Mostly Sunny 72° 72° 3% 0.00 in WNW 6 46% 50° 41%
3 PM Mostly Sunny 72° 72° 3% 0.00 in WNW 6 45% 50° 41%
4 PM Mostly Sunny 72° 72° 3% 0.00 in WNW 6 47% 50° 41%
5 PM Sunny 70° 70° 7% 0.00 in W 6 50% 51° 22%
6 PM Mostly Clear 67° 67° 7% 0.00 in W 6 55% 50° 22%
7 PM Mostly Clear 64° 64° 7% 0.00 in W 6 60% 50° 22%
8 PM Mostly Clear 61° 61° 7% 0.00 in W 1 65% 49° 22%
9 PM Mostly Clear 60° 60° 7% 0.00 in W 1 67% 48° 22%
10 PM Mostly Clear 59° 59° 7% 0.00 in W 1 66% 47° 22%
11 PM Partly Cloudy 58° 58° 6% 0.00 in W 1 66% 46° 34%
Monday, October 2615 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds
12 AM Partly Cloudy 57° 57° 6% 0.00 in W 1 65% 46° 34%
1 AM Partly Cloudy 56° 57° 6% 0.00 in W 1 65% 45° 34%
2 AM Partly Cloudy 56° 56° 6% 0.00 in NW 1 66% 45° 34%
3 AM Partly Cloudy 56° 56° 6% 0.00 in NW 1 66% 44° 34%
4 AM Partly Cloudy 55° 55° 6% 0.00 in NW 1 66% 44° 34%
5 AM Partly Cloudy 55° 55° 3% 0.00 in ENE 1 67% 44° 38%
6 AM Mostly Sunny 54° 54° 3% 0.00 in ENE 1 70% 44° 38%
7 AM Mostly Sunny 53° 53° 3% 0.00 in ENE 1 73% 45° 38%
8 AM Mostly Sunny 54° 54° 3% 0.00 in E 1 74% 46° 38%
9 AM Mostly Sunny 57° 57° 3% 0.00 in E 1 73% 48° 38%
10 AM Mostly Sunny 60° 60° 3% 0.00 in E 1 69% 50° 38%
11 AM Mostly Sunny 64° 64° 2% 0.00 in NNW 3 63% 51° 34%
12 PM Mostly Sunny 67° 67° 2% 0.00 in NNW 3 56% 51° 34%
1 PM Mostly Sunny 70° 70° 2% 0.00 in NNW 3 50% 50° 34%
2 PM Mostly Sunny 71° 71° 2% 0.00 in WNW 6 46% 49° 34%

National Weather Service forecast updated 4 days ago. Precipitation amounts are the forecast liquid equivalent for each hour.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.