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See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
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Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
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Today
Tomorrow
Tuesday
Daylight Hours
06:17
Sunrise
20:11
Sunset
13 hours 53 minutes of sunlight today
Moon
Waning Gibbous
85% illuminated
21:56
Moonrise
10:16
Moonset
Daily Forecast
Today
11°
30°
Monday
12°
33°
Tuesday
12°
26°
Wednesday
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Thursday
--
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Friday
--
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Saturday
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Air Quality Data Available
Upgrade to access real-time air quality data for Castro Valley.
Resources
UV Index
No protection needed
0
Low
Low
Extreme
Humidity
91%
Very Humid
Low
High
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