Hourly Weather Forecast - Castro Valley, CA

80% Chance of Light Rain

80% Chance Rain Showers

70% Chance Rain Showers

60% Chance Rain Showers

50% Chance Rain Showers

40% Chance Rain Showers

40% Chance Rain Showers

40% Chance Rain Showers

50% Chance Rain Showers

60% Chance of Light Rain

70% Chance of Light Rain

Light Rain

Light Rain

80% Chance of Light Rain

80% Chance Rain Showers

80% Chance Rain Showers

70% Chance Rain Showers

70% Chance Rain Showers

60% Chance Rain Showers

40% Chance Rain Showers

30% Chance Rain Showers

30% Chance Rain Showers

Partly Cloudy