Castro Valley Weather in March

March in Castro Valley brings moderate temperatures, with daytime highs of 18°C (64°F) and nights around 7°C (45°F). Quite a bit of rainfall is expected, around 89 mm (3.5 in), so pack an umbrella.

Rainfall in Castro Valley in March

Historically, approximately 12 days this month are expected to have rain, averaging 89 mm (3.5 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Castro Valley in March

If you're visiting Castro Valley in March, expect highs of 18°C (64°F) and overnight lows around 7°C (45°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows around 7°C (45°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Castro Valley in March

The days are predominantly sunny, with an estimated total of around 270 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August, September and October typically offer the best circumstances for Castro Valley.