As of 11:11 PST

Weather in Castro Valley, CA

60°Current weather

Castro Valley, Monday, 2 November, 11:11

Clear. Feels like 59°. High 65°, low 46°.

Pressure30.18 inHg
Wind5.7 mph S
Humidity67%
Visibility6.2 mi
Dew point49°

Monthly outlook for Castro Valley, CA: average high 69.7°, average low 53.2°. That is 2.7° above the climate normal for November. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 3 days and 1.0 inches. The warmest day looks like 7 November (77.2°), the coolest 5 November (45.4°).

69.7°/53.2°
Average high / low
+2.7°
Above normal
2 / 3
Wet days / normal
0.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
2 November – 11 November70.3°65.9°+2.5°
12 November – 21 November68.7°62.5°+3.5°
22 November – 1 Decemberat normal59.6°—

November records over 66 years

83.5°2 November 1967All-time high
35.1°28 November 2020All-time low

Climate normals and records are computed from the nearest reference point — Cherryland (3 mi).

Tue, 0366° / 50°0.12Rain
66 °Rain

Castro Valley, Tuesday, 3 November

Rain. High 66°, low 50°.

Pressure30.06 inHg
Wind8 mph S
Humidity73%
Visibility3.7 mi
Dew point51°
Wed, 0467° / 48°0Clear
67 °Clear

Castro Valley, Wednesday, 4 November

Clear. High 67°, low 48°.

Pressure30.06 inHg
Wind3.8 mph W
Humidity55%
Visibility6.2 mi
Dew point48°
Thu, 0570° / 45°0Clear
70 °Clear

Castro Valley, Thursday, 5 November

Clear. High 70°, low 45°.

Pressure30.09 inHg
Wind1.2 mph NW
Humidity47%
Visibility6.2 mi
Dew point47°
Fri, 0671° / 51°0Overcast
71 °Overcast

Castro Valley, Friday, 6 November

Overcast. High 71°, low 51°.

Pressure30.18 inHg
Wind4.4 mph W
Humidity71%
Visibility—
Dew point53°
Sat, 0777° / 53°0Clear
77 °Clear

Castro Valley, Saturday, 7 November

Clear. High 77°, low 53°.

Pressure30.09 inHg
Wind3.4 mph NW
Humidity38%
Visibility—
Dew point41°
Sun, 0877° / 57°0Mostly clear
77 °Mostly clear

Castro Valley, Sunday, 8 November

Mostly clear. High 77°, low 57°.

Pressure30.03 inHg
Wind5.1 mph W
Humidity34%
Visibility—
Dew point39°
Mon, 0974° / 58°0Overcast
74 °Overcast

Castro Valley, Monday, 9 November

Overcast. High 74°, low 58°.

Pressure29.97 inHg
Wind4 mph W
Humidity33%
Visibility—
Dew point37°
Tue, 1071° / 56°0Overcast
71 °Overcast

Castro Valley, Tuesday, 10 November

Overcast. High 71°, low 56°.

Pressure30.03 inHg
Wind6.7 mph SW
Humidity61%
Visibility—
Dew point50°
Wed, 1165° / 56°0.23Rain
65 °Rain

Castro Valley, Wednesday, 11 November

Rain. High 65°, low 56°.

Pressure29.97 inHg
Wind11 mph SE
Humidity60%
Visibility—
Dew point48°
Thu, 1266° / 55°0Partly cloudy
66 °Partly cloudy

Castro Valley, Thursday, 12 November

Partly cloudy. High 66°, low 55°.

Pressure30.06 inHg
Wind6.8 mph W
Humidity72%
Visibility—
Dew point54°
Fri, 1370° / 55°0Clear
70 °Clear

Castro Valley, Friday, 13 November

Clear. High 70°, low 55°.

Pressure30.24 inHg
Wind5.5 mph NW
Humidity67%
Visibility—
Dew point52°
Sat, 1474° / 55°0Partly cloudy
74 °Partly cloudy

Castro Valley, Saturday, 14 November

Partly cloudy. High 74°, low 55°.

Pressure30.12 inHg
Wind3 mph NE
Humidity43%
Visibility—
Dew point42°
Sun, 1571° / 56°0Partly cloudy
71 °Partly cloudy

Castro Valley, Sunday, 15 November

Partly cloudy. High 71°, low 56°.

Pressure30.00 inHg
Wind8.6 mph W
Humidity43%
Visibility—
Dew point44°
Mon, 1667° / 56°0Overcast
67 °Overcast

Castro Valley, Monday, 16 November

Overcast. High 67°, low 56°.

Pressure30.03 inHg
Wind6.2 mph W
Humidity77%
Visibility—
Dew point52°
Tue, 1765° / 53°0Overcast
65 °Overcast

Castro Valley, Tuesday, 17 November

Overcast. High 65°, low 53°.

Pressure30.00 inHg
Wind3.2 mph NE
Humidity40%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1862° / 48°0.07Climate normal
62 °Climate normal

Castro Valley, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high62°
Average low48°
Average precipitation0.07 in
Chance of precipitation20%
Record high74° (1989)
Record low37° (1994)
Thu, 1961° / 47°0.04Climate normal
61 °Climate normal

Castro Valley, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high61°
Average low47°
Average precipitation0.04 in
Chance of precipitation25%
Record high74° (1989)
Record low36° (1977)
Fri, 2062° / 47°0.1Climate normal
62 °Climate normal

Castro Valley, Friday, 20 November

Climate normal for this date — 60-year average.

Average high62°
Average low47°
Average precipitation0.1 in
Chance of precipitation25%
Record high75° (1989)
Record low36° (1964)
Sat, 2160° / 47°0.08Climate normal
60 °Climate normal

Castro Valley, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high60°
Average low47°
Average precipitation0.08 in
Chance of precipitation27%
Record high71° (2002)
Record low35° (1964)
Sun, 2260° / 47°0.08Climate normal
60 °Climate normal

Castro Valley, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high60°
Average low47°
Average precipitation0.08 in
Chance of precipitation28%
Record high70° (2005)
Record low37° (2022)
Mon, 2360° / 46°0.06Climate normal
60 °Climate normal

Castro Valley, Monday, 23 November

Climate normal for this date — 60-year average.

Average high60°
Average low46°
Average precipitation0.06 in
Chance of precipitation15%
Record high73° (1995)
Record low36° (1994)
Tue, 2460° / 46°0.07Climate normal
60 °Climate normal

Castro Valley, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high60°
Average low46°
Average precipitation0.07 in
Chance of precipitation20%
Record high73° (1995)
Record low35° (2010)
Wed, 2560° / 46°0.04Climate normal
60 °Climate normal

Castro Valley, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high60°
Average low46°
Average precipitation0.04 in
Chance of precipitation18%
Record high72° (2017)
Record low37° (2023)
Thu, 2660° / 45°0.06Climate normal
60 °Climate normal

Castro Valley, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high60°
Average low45°
Average precipitation0.06 in
Chance of precipitation22%
Record high69° (2014)
Record low37° (1993)
Fri, 2759° / 45°0.07Climate normal
59 °Climate normal

Castro Valley, Friday, 27 November

Climate normal for this date — 60-year average.

Average high59°
Average low45°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (1986)
Record low36° (2023)
Sat, 2859° / 44°0.11Climate normal
59 °Climate normal

Castro Valley, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high59°
Average low44°
Average precipitation0.11 in
Chance of precipitation23%
Record high69° (1980)
Record low35° (2020)
Sun, 2959° / 45°0.12Climate normal
59 °Climate normal

Castro Valley, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high59°
Average low45°
Average precipitation0.12 in
Chance of precipitation25%
Record high71° (1995)
Record low36° (2022)
Mon, 3058° / 44°0.15Climate normal
58 °Climate normal

Castro Valley, Monday, 30 November

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.15 in
Chance of precipitation25%
Record high69° (1977)
Record low37° (2015)
Tue, 0159° / 45°0.1Climate normal
59 °Climate normal

Castro Valley, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high59°
Average low45°
Average precipitation0.1 in
Chance of precipitation27%
Record high70° (2021)
Record low37° (2007)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Castro Valley, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Castro Valley, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.