Castro Valley Weather in May
May in Castro Valley typically sees daytime highs of 21°C (70°F) and nighttime lows of 10°C (50°F). Minimal rainfall is typical for this month.
Rainfall in Castro Valley in May
Historically, May sees about 3 days of rain, with a monthly average of 12 mm (0.5 in). When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in Castro Valley in May
Castro Valley has excellent weather in May, with days reaching 21°C (70°F) and nights cooling to 10°C (50°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows of 10°C (50°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Castro Valley in May
The days are predominantly sunny, with an estimated total of around 324 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.If you're a fan of comfortable temperatures and drier conditions, May is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Castro Valley's climate page.
Castro Valley Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
21°C (70°F)
Chance of Rain
10%
Precipitation
12 mm (0.5 in)
Rainy days
3 days
Humidity
72% *
Sunshine
324 hours *
Percentage Sunshine
73% *
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
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What to Wear in Castro Valley in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Dry conditions mean you won't need to worry about rain protection. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Castro Valley in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Castro Valley's climate page.
Temperature Rainfall Sunshine Humidity
See the full Castro Valley climate overview or explore weather in the United States of America.
