Cities / United States / California

14°

⛅ Castro Valley weather

Partly cloudy. .

Feels like 14° Wind 6 km/h NW Humidity 90% Pressure 1017 hPa UV 2 Air Fair ☀ 06:26 - 19:57

Right now it is 14° in Castro Valley with partly cloudy skies and today's high is 25° with an overnight low of 13°. The sun rises at 06:26 and sets at 19:57, giving 13h 31m of daylight. Over the coming week highs range from 22° to 27°.

Castro Valley is in California, United States, sitting 50 m above sea level, with a population of about 61,000. Local time is America/Los_Angeles (UTC−7), and every time on this page is shown in it.

Next 24 hours - temperature

12° 19° 25° 25° 13° 02:00 · 14.4° · 0 mm 03:00 · 14.2° · 0 mm 04:00 · 14.2° · 0 mm 05:00 · 14° · 0 mm 06:00 · 13.4° · 0 mm 07:00 · 12.9° · 0 mm 08:00 · 12.9° · 0 mm 09:00 · 14.1° · 0 mm 10:00 · 15.8° · 0 mm 11:00 · 18.7° · 0 mm 12:00 · 21° · 0 mm 13:00 · 22.9° · 0 mm 14:00 · 24.3° · 0 mm 15:00 · 24.9° · 0 mm 16:00 · 24.4° · 0 mm 17:00 · 22.8° · 0 mm 18:00 · 21.1° · 0 mm 19:00 · 18.7° · 0 mm 20:00 · 16.1° · 0 mm 21:00 · 14.8° · 0 mm 22:00 · 14.3° · 0 mm 23:00 · 13.8° · 0 mm 00:00 · 13.8° · 0 mm 01:00 · 13.7° · 0 mm

Precipitation

02:00 · 0 mm 02:00 03:00 · 0 mm 04:00 · 0 mm 05:00 · 0 mm 05:00 06:00 · 0 mm 07:00 · 0 mm 08:00 · 0 mm 08:00 09:00 · 0 mm 10:00 · 0 mm 11:00 · 0 mm 11:00 12:00 · 0 mm 13:00 · 0 mm 14:00 · 0 mm 14:00 15:00 · 0 mm 16:00 · 0 mm 17:00 · 0 mm 17:00 18:00 · 0 mm 19:00 · 0 mm 20:00 · 0 mm 20:00 21:00 · 0 mm 22:00 · 0 mm 23:00 · 0 mm 23:00 00:00 · 0 mm 01:00 · 0 mm

Hour by hour

TIMETEMPFEELSRAINCONDITIONS
02:00 ⛅ 14.4° 14.2° - Partly cloudy
03:00 ☁️ 14.2° 14.4° - Overcast
04:00 ☁️ 14.2° 14.3° - Overcast
05:00 ☁️ 14° 13.8° - Overcast
06:00 ☁️ 13.4° 12.9° - Overcast
07:00 ☁️ 12.9° 12.5° - Overcast
08:00 ☁️ 12.9° 12.7° - Overcast
09:00 ☁️ 14.1° 14.1° - Overcast
10:00 ⛅ 15.8° 15.3° - Partly cloudy
11:00 ☀️ 18.7° 18° - Clear sky
12:00 ☀️ 21° 20.1° - Clear sky
13:00 ☀️ 22.9° 22° - Clear sky

Next 16 days

Today☀️ 25°13° Wed 19☀️ 27°13° Thu 20☁️ 24°16° Fri 21☁️ 22°16° Sat 22☀️ 25°15° Sun 23☀️ 26°16° Mon 24☀️ 25°17° Tue 25☀️ 25°16° Wed 26☀️ 23°15° Thu 27☀️ 24°15° Fri 28☀️ 20°15° Sat 29☀️ 19°14° Sun 30☀️ 20°14° Mon 31☀️ 23°14° Tue 1☀️ 21°14° Wed 2☀️ 0°0°
☀️ TodayAugust 18th Avg 17° Low 13° at 07:00 High 25° at 15:00 Feels 23° Wind ~14 km/h
Cloudy Clear Cloudy
00:00 15°
02:00 14°
04:00 14°
06:00 13°
08:00 13°
10:00 16°
12:00 21°
14:00 24°
16:00 24°
18:00 21°
20:00 16°
22:00 14°
☀️ WednesdayAugust 19th Avg 18° Low 13° at 07:00 High 27° at 15:00 Feels 25° Wind ~15 km/h
Cloudy Clear Cloudy
00:00 14°
02:00 14°
04:00 13°
06:00 13°
08:00 14°
10:00 18°
12:00 23°
14:00 26°
16:00 25°
18:00 21°
20:00 17°
22:00 16°
☁️ ThursdayAugust 20th Avg 19° Low 16° at 06:00 High 24° at 15:00 Feels 22° Wind ~12 km/h
Clear Cloudy
00:00 17°
02:00 17°
04:00 16°
06:00 16°
08:00 17°
10:00 19°
12:00 21°
14:00 24°
16:00 23°
18:00 22°
20:00 20°
22:00 19°
☁️ FridayAugust 21st Avg 18° Low 16° at 07:00 High 22° at 15:00 Feels 20° Wind ~15 km/h
Cloudy Cloudy
00:00 18°
02:00 18°
04:00 17°
06:00 16°
08:00 17°
10:00 19°
12:00 20°
14:00 22°
16:00 21°
18:00 19°
20:00 17°
22:00 17°
☀️ SaturdayAugust 22nd Avg 20° Low 15° at 06:00 High 25° at 16:00 Feels 23° Wind ~14 km/h
Clear Clear
00:00 17°
02:00 16°
04:00 16°
06:00 15°
08:00 16°
10:00 20°
12:00 23°
14:00 25°
16:00 25°
18:00 23°
20:00 20°
22:00 19°
☀️ SundayAugust 23rd Avg 20° Low 16° at 05:00 High 26° at 15:00 Feels 23° Wind ~16 km/h
Clear
00:00 18°
02:00 17°
04:00 16°
06:00 16°
08:00 17°
10:00 20°
12:00 23°
14:00 26°
16:00 25°
18:00 23°
20:00 20°
22:00 19°
☀️ MondayAugust 24th Avg 19° Low 17° at 06:00 High 25° at 14:00 Feels 22° Wind ~17 km/h
Clear
00:00 18°
02:00 18°
04:00 17°
06:00 17°
08:00 17°
10:00 19°
12:00 22°
14:00 25°
16:00 24°
18:00 22°
20:00 19°
22:00 18°
☀️ TuesdayAugust 25th Avg 19° Low 16° at 05:00 High 25° at 15:00 Feels 23° Wind ~16 km/h
Clear Clear
00:00 17°
02:00 17°
04:00 16°
06:00 16°
08:00 17°
10:00 19°
12:00 22°
14:00 25°
16:00 25°
18:00 22°
20:00 18°
22:00 17°
☀️ WednesdayAugust 26th Avg 18° Low 15° at 05:00 High 23° at 14:00 Feels 21° Wind ~16 km/h
Clear
00:00 16°
02:00 16°
04:00 15°
06:00 15°
08:00 16°
10:00 18°
12:00 21°
14:00 23°
16:00 22°
18:00 20°
20:00 18°
22:00 17°
☀️ ThursdayAugust 27th Avg 19° Low 15° at 06:00 High 24° at 14:00 Feels 21° Wind ~13 km/h
Clear
00:00 17°
02:00 16°
04:00 15°
06:00 15°
08:00 16°
10:00 19°
12:00 22°
14:00 24°
16:00 23°
18:00 21°
20:00 19°
22:00 18°
☀️ FridayAugust 28th Avg 17° Low 15° at 06:00 High 20° at 14:00 Feels 17° Wind ~16 km/h
Clear
00:00 16°
02:00 15°
04:00 15°
06:00 15°
08:00 15°
10:00 17°
12:00 19°
14:00 20°
16:00 20°
18:00 19°
20:00 17°
22:00 16°
☀️ SaturdayAugust 29th Avg 16° Low 14° at 06:00 High 19° at 14:00 Feels 15° Wind ~21 km/h
Clear Partly Cloudy Partly Cloudy Clear
00:00 15°
02:00 15°
04:00 14°
06:00 14°
08:00 15°
10:00 16°
12:00 18°
14:00 19°
16:00 19°
18:00 18°
20:00 16°
22:00 15°
☀️ SundayAugust 30th Avg 16° Low 14° at 06:00 High 20° at 14:00 Feels 17° Wind ~18 km/h
Clear Cloudy Clear
00:00 15°
02:00 15°
04:00 14°
06:00 14°
08:00 15°
10:00 16°
12:00 18°
14:00 20°
16:00 19°
18:00 18°
20:00 16°
22:00 16°
☀️ MondayAugust 31st Avg 18° Low 14° at 06:00 High 23° at 16:00 Feels 19° Wind ~17 km/h
Clear
00:00 15°
02:00 14°
04:00 14°
06:00 14°
08:00 15°
10:00 19°
12:00 22°
14:00 22°
16:00 23°
18:00 21°
20:00 18°
22:00 16°
☀️ TuesdaySeptember 1st Avg 17° Low 14° at 06:00 High 21° at 15:00 Feels 18° Wind ~17 km/h
Clear
00:00 15°
02:00 15°
04:00 14°
06:00 14°
08:00 14°
10:00 17°
12:00 20°
14:00 21°
16:00 21°
18:00 19°
20:00 16°
22:00 16°
☀️ WednesdaySeptember 2nd Avg 17° Low 0° at 03:00 High 0° at 14:00 Feels 18° Wind ~17 km/h
Cloudy Clear Unknown
00:00 16°
02:00 15°
04:00 15°
06:00 15°
08:00 16°
10:00 18°
12:00 20°
14:00 21°
16:00 20°
18:00 0°
20:00 0°
22:00 0°

Sun

☀️ Sunrise 06:26 · Sunset 19:57

13h 31m of daylight · America/Los_Angeles

Air quality

PM2.5 12 µg/m³ - Fair

Fine for almost everyone; unusually sensitive people may notice it on a long run.

Source: Copernicus CAMS, updated hourly.

Nearby

Upper B Street · 2.1 km Cherryland · 2.2 km Ashland · 2.4 km Hayward · 2.9 km Lorenzo Station · 3.8 km Fairview · 4 km

Tools for Castro Valley

☔ Will it rain today? 🌅 Sunrise & sunset 🫁 Air quality 📼 Weather on this day

Common questions about Castro Valley weather

Will it rain in Castro Valley today?

No rain is in the forecast for Castro Valley today.

What is the temperature in Castro Valley right now?

It is 14° in Castro Valley right now. Today runs between a low of 13° and a high of 25°.

What time is sunrise and sunset in Castro Valley?

The sun rises at 06:26 and sets at 19:57 local time in Castro Valley today, giving 13h 31m of daylight.

What is the air quality in Castro Valley?

PM2.5 in Castro Valley is currently 12 µg/m³, which counts as Fair on the European air-quality index. Fine for almost everyone; unusually sensitive people may notice it on a long run.

How accurate is the Castro Valley forecast, and how far ahead does it go?

This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers Castro Valley best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.

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