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As of 06:54 PDT

Weather in Castro Valley, CA

58°Current weather

Castro Valley, Sunday, 9 August, 06:54

Clear. Feels like 58°. High 87°, low 58°.

Pressure29.85 inHg
Wind1 mph S
Humidity87%
Visibility6.2 mi
Dew point54°

10-day forecast for Castro Valley, CA: 56° to 87°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.

87°
Best day: Tuesday, August 11
79°
Worst day: Saturday, August 15

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1083° / 61°0Overcast
MorningOvercast65°feels 64°
AfternoonPartly cloudy83°feels 81°
EveningClear69°feels 69°
OvernightClear63°feels 63°
83 °Overcast

Castro Valley, Monday, 10 August

Overcast. High 83°, low 61°.

Pressure29.85 inHg
Wind4.5 mph W
Humidity32%
Visibility6.2 mi
Dew point48°
Tue, 1187° / 58°0Clear
MorningClear65°feels 64°
AfternoonClear87°feels 85°
EveningClear66°feels 65°
OvernightClear59°feels 58°
87 °Clear

Castro Valley, Tuesday, 11 August

Clear. High 87°, low 58°.

Pressure29.91 inHg
Wind3.4 mph W
Humidity31%
Visibility6.2 mi
Dew point47°
Wed, 1283° / 57°0Clear
MorningClear63°feels 63°
AfternoonClear83°feels 82°
EveningClear65°feels 64°
OvernightOvercast59°feels 58°
83 °Clear

Castro Valley, Wednesday, 12 August

Clear. High 83°, low 57°.

Pressure29.83 inHg
Wind4.4 mph SW
Humidity37%
Visibility6.2 mi
Dew point50°
Thu, 1381° / 56°0Mostly clear
MorningMostly clear67°feels 66°
AfternoonMostly clear78°feels 77°
EveningMostly clear62°feels 62°
OvernightClear57°feels 57°
81 °Mostly clear

Castro Valley, Thursday, 13 August

Mostly clear. High 81°, low 56°.

Pressure29.83 inHg
Wind9.4 mph W
Humidity39%
Visibility—
Dew point51°
Fri, 1480° / 56°0Clear
MorningClear67°feels 66°
AfternoonClear77°feels 77°
EveningClear63°feels 62°
OvernightClear59°feels 59°
80 °Clear

Castro Valley, Friday, 14 August

Clear. High 80°, low 56°.

Pressure29.91 inHg
Wind9.5 mph W
Humidity37%
Visibility—
Dew point49°
Sat, 1579° / 56°0Clear
MorningClear67°feels 66°
AfternoonClear76°feels 76°
EveningClear62°feels 61°
OvernightClear60°feels 59°
79 °Clear

Castro Valley, Saturday, 15 August

Clear. High 79°, low 56°.

Pressure29.97 inHg
Wind10.3 mph NW
Humidity39%
Visibility—
Dew point50°
Sun, 1680° / 57°0Overcast
MorningOvercast66°feels 65°
AfternoonOvercast72°feels 72°
EveningOvercast64°feels 64°
OvernightOvercast61°feels 60°
80 °Overcast

Castro Valley, Sunday, 16 August

Overcast. High 80°, low 57°.

Pressure30.09 inHg
Wind8 mph W
Humidity47%
Visibility—
Dew point51°
Mon, 1786° / 59°0Overcast
MorningOvercast71°feels 70°
AfternoonOvercast83°feels 81°
EveningOvercast65°feels 64°
OvernightOvercast62°feels 61°
86 °Overcast

Castro Valley, Monday, 17 August

Overcast. High 86°, low 59°.

Pressure30.06 inHg
Wind8.9 mph W
Humidity33%
Visibility—
Dew point51°
Tue, 1885° / 59°0Clear
MorningClear70°feels 69°
AfternoonClear82°feels 80°
EveningClear66°feels 65°
OvernightClear63°feels 62°
85 °Clear

Castro Valley, Tuesday, 18 August

Clear. High 85°, low 59°.

Pressure30.00 inHg
Wind8 mph W
Humidity33%
Visibility—
Dew point50°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Castro Valley, CA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.