Castro Valley, CA Weather

    01:00 Saturday
    Scattered clouds
    Scattered clouds
    8° Feels like 8°
    First Quarter First Quarter Illuminated: 50%
    • Today 27 Dec. Scattered clouds 13° / 4° Moderate north wind 8 - 21 km/h
    • Tomorrow 28 Dec. Scattered clouds 14° / 3° Gentle northeast wind 7 - 16 km/h
    • Monday 29 Dec. Clear 14° / 2° Gentle northeast wind 8 - 18 km/h
    • Tuesday 30 Dec. Clear 14° / 2° Moderate northeast wind 9 - 21 km/h
    • Wednesday 31 Dec. Clear 17° / 3° Gentle northeast wind 7 - 17 km/h
    • Thursday 1 Jan. Light rain with partly cloudy skies 70% 1.3 mm 16° / 5° Gentle northeast wind 4 - 12 km/h
    • Friday 2 Jan. Light rain with partly cloudy skies 70% 5.2 mm 13° / 7° Strong west wind 19 - 58 km/h

    Weather Forecast for Castro Valley, CA Today

    , 27 December

    Tomorrow

    , 28 December
    01:00 Scattered clouds 8° Scattered clouds
    Feels Like 8°
    Gentle southwest wind Southwest 4 - 9 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 96%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 24%
    • Feels Like Feels Like 8 °C
    • Visibility Visibility 20 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 9 km/h
    • Snowline Snowline 5577 ft
    02:00 Scattered clouds 8° Scattered clouds
    Feels Like 7°
    Gentle southwest wind Southwest 5 - 9 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 96%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 17%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 25 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 9 km/h
    • Snowline Snowline 5577 ft
    03:00 Clear skies 8° Clear
    Feels Like 7°
    Gentle southwest wind Southwest 5 - 11 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 96%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 1%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 25 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 11 km/h
    • Snowline Snowline 5577 ft
    04:00 Clear skies 8° Clear
    Feels Like 7°
    Gentle west wind West 4 - 11 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 95%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 1%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 25 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 11 km/h
    • Snowline Snowline 5577 ft
    Scattered clouds 05:00 Scattered clouds 7° Scattered clouds
    Feels Like 7°
    Gentle west wind West 4 - 11 km/h
    		UV Index 0 Low SPF: no
    05:00 Scattered clouds 7° Scattered clouds
    Feels Like 7°
    Gentle west wind West 4 - 11 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 95%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 15%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 20 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 11 km/h
    • Snowline Snowline 5577 ft
    06:00 Scattered clouds 7° Scattered clouds
    Feels Like 7°
    Gentle west wind West 4 - 10 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 95%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 18%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 20 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 10 km/h
    • Snowline Snowline 5577 ft
    07:00 Clear 7° Sunny
    Feels Like 7°
    Gentle northwest wind Northwest 4 - 10 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 95%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 10 km/h
    • Snowline Snowline 5249 ft
    Sunny 08:00 Clear 7° Sunny
    Feels Like 7°
    Gentle northwest wind Northwest 4 - 9 km/h
    		UV Index 0 Low SPF: no
    08:00 Clear 7° Sunny
    Feels Like 7°
    Gentle northwest wind Northwest 4 - 9 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 94%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 9 km/h
    • Snowline Snowline 5249 ft
    09:00 Clear 8° Sunny
    Feels Like 8°
    Gentle northwest wind Northwest 4 - 13 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 92%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 8 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 13 km/h
    • Snowline Snowline 5577 ft
    10:00 Clear 9° Sunny
    Feels Like 9°
    Gentle northwest wind Northwest 4 - 15 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 85%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 6%
    • Feels Like Feels Like 9 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1023 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 15 km/h
    • Snowline Snowline 5906 ft
    Scattered clouds 11:00 Scattered clouds 10° Scattered clouds
    Feels Like 10°
    Gentle northwest wind Northwest 2 - 14 km/h
    		UV Index 1 Low SPF: no
    11:00 Partly cloudy 10° Partly cloudy
    Feels Like 10°
    Gentle northwest wind Northwest 2 - 14 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 77%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 30%
    • Feels Like Feels Like 10 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 2 km/h
    • Pressure Pressure 1023 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 14 km/h
    • Snowline Snowline 6234 ft
    12:00 Partly cloudy 12° Partly cloudy
    Feels Like 12°
    Gentle northwest wind Northwest 3 - 14 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 72%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 83%
    • Feels Like Feels Like 12 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 3 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 14 km/h
    • Snowline Snowline 7218 ft
    13:00 Partly cloudy 12° Partly cloudy
    Feels Like 12°
    Gentle west wind West 4 - 16 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 69%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 94%
    • Feels Like Feels Like 12 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 16 km/h
    • Snowline Snowline 7546 ft
    Partly cloudy 14:00 Partly cloudy 12° Partly cloudy
    Feels Like 12°
    Moderate northwest wind Northwest 7 - 20 km/h
    		UV Index 1 Low SPF: no
    14:00 Partly cloudy 12° Partly cloudy
    Feels Like 12°
    Moderate northwest wind Northwest 7 - 20 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 70%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 80%
    • Feels Like Feels Like 12 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 20 km/h
    • Snowline Snowline 8202 ft
    15:00 Scattered clouds 12° Scattered clouds
    Feels Like 12°
    Moderate north wind North 7 - 21 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 69%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 37%
    • Feels Like Feels Like 12 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 21 km/h
    • Snowline Snowline 8858 ft
    16:00 Scattered clouds 12° Scattered clouds
    Feels Like 12°
    Moderate north wind North 8 - 21 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 69%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 40%
    • Feels Like Feels Like 12 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 21 km/h
    • Snowline Snowline 8858 ft
    Sunny 17:00 Clear 11° Sunny
    Feels Like 11°
    Gentle northeast wind Northeast 7 - 18 km/h
    		UV Index 0 Low SPF: no
    17:00 Scattered clouds 11° Scattered clouds
    Feels Like 11°
    Gentle northeast wind Northeast 7 - 18 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 74%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 7%
    • Feels Like Feels Like 11 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1023 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 18 km/h
    • Snowline Snowline 9186 ft
    18:00 Clear skies 10° Clear
    Feels Like 9°
    Gentle northeast wind Northeast 6 - 16 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 82%
    • Dew Point Dew Point 7 °C
    • Clouds Clouds 1%
    • Feels Like Feels Like 9 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1024 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 16 km/h
    • Snowline Snowline 9186 ft
    19:00 Clear skies 8° Clear
    Feels Like 8°
    Gentle east wind East 4 - 13 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 88%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 8 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1024 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 13 km/h
    • Snowline Snowline 9514 ft
    Clear 20:00 Clear skies 7° Clear
    Feels Like 8°
    Gentle northeast wind Northeast 2 - 9 km/h
    		UV Index 0 Low SPF: no
    20:00 Clear skies 7° Clear
    Feels Like 8°
    Gentle northeast wind Northeast 2 - 9 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 94%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 8 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 2 km/h
    • Pressure Pressure 1024 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 9 km/h
    • Snowline Snowline 9514 ft
    21:00 Clear skies 6° Clear
    Feels Like 6°
    Gentle northeast wind Northeast 3 - 9 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 96%
    • Dew Point Dew Point 6 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 6 °C
    • Visibility Visibility 25 km
    • Wind Wind - Average 3 km/h
    • Pressure Pressure 1025 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 9 km/h
    • Snowline Snowline 9843 ft
    22:00 Scattered clouds 5° Scattered clouds
    Feels Like 5°
    Gentle northeast wind Northeast 4 - 10 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 98%
    • Dew Point Dew Point 5 °C
    • Clouds Clouds 37%
    • Feels Like Feels Like 5 °C
    • Visibility Visibility 3 km
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1025 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 10 km/h
    • Snowline Snowline 9843 ft
    Scattered clouds 23:00 Scattered clouds 5° Scattered clouds
    Feels Like 5°
    Gentle northeast wind Northeast 3 - 10 km/h
    		UV Index 0 Low SPF: no
    23:00 Scattered clouds 5° Scattered clouds
    Feels Like 5°
    Gentle northeast wind Northeast 3 - 10 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 98%
    • Dew Point Dew Point 4 °C
    • Clouds Clouds 50%
    • Feels Like Feels Like 5 °C
    • Visibility Visibility 2 km
    • Wind Wind - Average 3 km/h
    • Pressure Pressure 1025 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 10 km/h
    • Snowline Snowline 9843 ft
    24:00 Scattered clouds 4° Scattered clouds
    Feels Like 4°
    Gentle northeast wind Northeast 3 - 10 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 99%
    • Dew Point Dew Point 4 °C
    • Clouds Clouds 55%
    • Feels Like Feels Like 4 °C
    • Visibility Visibility 2 km
    • Wind Wind - Average 3 km/h
    • Pressure Pressure 1025 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 10 km/h
    • Snowline Snowline 9843 ft

    Sunrise and Sunset

    Sunrise 07:22 Sunset 16:56
    First light 06:53 Midday 12:09 Last light 17:26
    Day length 9h 35m

    Time remaining until sunrise 6h 12m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    27 First Quarter
    28 First Quarter
    29 First Quarter
    30 First Quarter
    31 First Quarter
    1 First Quarter
    2 Full Moon
    3 Full Moon
    4 Last Quarter
    5 Last Quarter
    6 Last Quarter
    7 Last Quarter
    8 Last Quarter
    9 Last Quarter

    Air quality in Castro Valley today

    Detail
    39
    Fair PM₂₅ (23 µg/m³)
    • Little health risk.
    • Sensitive people should consider reducing prolonged or intense outdoor activities if they experience symptoms.

    Weather graphs
    Maximum Minimum Rainfall

    Videos

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