Castro Valley, CA Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Partly Cloudy with Mist and Fog 47°F
Feels Like 46°F  
Humidity 93% Dew Point 45°F Wind N 3 MPH Gusts 7 Barometer 30.02 in.
Solar Rad 127 w/m2 UV Index 1
Report from a personal weather station 0.3 mi. W of central Castro Valley
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Point Forecast at a Glance

ThuNov 27
Thu Nov 27: Mostly Sunny, High 68F, Low 46F
68
46
FriNov 28
Fri Nov 28: Mostly Sunny, High 64F, Low 45F
64
45
SatNov 29
Sat Nov 29: Fog, High 64F, Low 46F
64
46
SunNov 30
Sun Nov 30: Fog, High 62F, Low 44F
62
44
MonDec 1
Mon Dec 1: Sunny, High 64F, Low 45F
64
45
TueDec 2
Tue Dec 2: Mostly Sunny, High 63F, Low 46F
63
46
WedDec 3
Wed Dec 3: Mostly Sunny, High 62F
62
 

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 62°F to 68°F. Dry weather expected throughout the week.

Climate Context

This week's forecast shows temperatures running 4°F above the historical average for November-December. Normal highs for this period are around 60°F with lows around 43°F.

This Date in Weather History

1883 - Fire engines were called out in New York City and New Haven, CT, as a result of the afterglow of the sunset due to vivid red ash from the Krakatoa Volcano explosion in August.

More on this and other weather history

Castro Valley, CA 7 Day Weather Forecast Details

Thursday Nov 27

Mostly Sunny

Day: Mostly sunny, with a high near 68. Calm wind becoming north northeast around 5 mph.

Partly Cloudy

Night: Partly cloudy, with a low around 46. East northeast wind around 5 mph becoming calm in the evening.

Friday Nov 28

Mostly Sunny

Day: Mostly sunny, with a high near 64. Calm wind becoming west around 6 mph in the afternoon.

Fog

Night: Patchy dense fog before 10pm, then patchy dense fog after 4am. Otherwise, partly cloudy, with a low around 45. Calm wind becoming east around 5 mph after midnight.

Saturday Nov 29

Fog

Day: Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 64. North northeast wind around 6 mph.

Fog

Night: Patchy dense fog after 5am. Otherwise, partly cloudy, with a low around 46.

Sunday Nov 30

Fog

Day: Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 62.

Partly Cloudy

Night: Partly cloudy, with a low around 44.

Monday Dec 1

Sunny

Day: Sunny, with a high near 64.

Mostly Clear

Night: Mostly clear, with a low around 45.

Tuesday Dec 2

Mostly Sunny

Day: Mostly sunny, with a high near 63.

Partly Cloudy

Night: Partly cloudy, with a low around 46.

Wednesday Dec 3

Mostly Sunny

Day: Mostly sunny, with a high near 62.


About Castro Valley, CA

Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. At the 2020 census, it was the fourth most populous unincorporated area in California. The population was 66,441 at the 2020 census. Castro Valley is named after Guillermo Castro, a noted 19th-century Mexican Californio ranchero who owned the land where the community is located.

Content from Wikipedia, licensed under CC BY-SA 3.0.

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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.