As of 19:49 PST

Weather in Castro Valley, CA

59°Current weather

Castro Valley, Wednesday, 11 November, 19:49

Clear. Feels like 58°. High 75°, low 49°.

Pressure29.94 inHg
Wind4.6 mph NE
Humidity72%
Visibility6.2 mi
Dew point50°

Monthly outlook for Castro Valley, CA: average high 61.7°, average low 48.6°. That is 0.1° below the climate normal for November. Precipitation is expected on 7 days (about 3.3 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 11 November (75°), the coolest 17 November (41.8°).

61.7°/48.6°
Average high / low
−0.1°
Below normal
7 / 4
Wet days / normal
3.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
11 November – 20 November62.9°62.8°+0.1°
21 November – 30 November59.6°59.7°-0.1°
1 December – 10 Decemberat normal58.4°—

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).

Thu, 1274° / 49°0Mostly clear
74 °Mostly clear

Castro Valley, Thursday, 12 November

Mostly clear. High 74°, low 49°.

Pressure29.83 inHg
Wind7 mph SW
Humidity58%
Visibility6.2 mi
Dew point54°
Fri, 1361° / 50°0.69Heavy rain
61 °Heavy rain

Castro Valley, Friday, 13 November

Heavy rain. High 61°, low 50°.

Pressure29.65 inHg
Wind14 mph S
Humidity94%
Visibility1.4 mi
Dew point54°
Sat, 1463° / 47°0Clear
63 °Clear

Castro Valley, Saturday, 14 November

Clear. High 63°, low 47°.

Pressure29.97 inHg
Wind3.6 mph SW
Humidity65%
Visibility6.2 mi
Dew point50°
Sun, 1560° / 51°0.39Rain
60 °Rain

Castro Valley, Sunday, 15 November

Rain. High 60°, low 51°.

Pressure30.00 inHg
Wind9.4 mph S
Humidity84%
Visibility6.2 mi
Dew point54°
Mon, 1660° / 47°0Clear
60 °Clear

Castro Valley, Monday, 16 November

Clear. High 60°, low 47°.

Pressure30.18 inHg
Wind7.7 mph W
Humidity64%
Visibility—
Dew point43°
Tue, 1760° / 42°0Partly cloudy
60 °Partly cloudy

Castro Valley, Tuesday, 17 November

Partly cloudy. High 60°, low 42°.

Pressure30.09 inHg
Wind7.8 mph W
Humidity64%
Visibility—
Dew point42°
Wed, 1859° / 48°0.42Rain
59 °Rain

Castro Valley, Wednesday, 18 November

Rain. High 59°, low 48°.

Pressure30.03 inHg
Wind9 mph SE
Humidity66%
Visibility—
Dew point44°
Thu, 1959° / 51°0.67Rain
59 °Rain

Castro Valley, Thursday, 19 November

Rain. High 59°, low 51°.

Pressure29.91 inHg
Wind15 mph SW
Humidity76%
Visibility—
Dew point48°
Fri, 2057° / 52°0.93Rain
57 °Rain

Castro Valley, Friday, 20 November

Rain. High 57°, low 52°.

Pressure29.88 inHg
Wind18.1 mph SE
Humidity82%
Visibility—
Dew point49°
Sat, 2159° / 50°0.07Light rain
59 °Light rain

Castro Valley, Saturday, 21 November

Light rain. High 59°, low 50°.

Pressure30.09 inHg
Wind5.5 mph S
Humidity69%
Visibility—
Dew point46°
Sun, 2260° / 46°0Overcast
60 °Overcast

Castro Valley, Sunday, 22 November

Overcast. High 60°, low 46°.

Pressure30.18 inHg
Wind4 mph N
Humidity63%
Visibility—
Dew point41°
Mon, 2361° / 46°0Clear
61 °Clear

Castro Valley, Monday, 23 November

Clear. High 61°, low 46°.

Pressure30.18 inHg
Wind3.6 mph NE
Humidity59%
Visibility—
Dew point40°
Tue, 2462° / 46°0Mostly clear
62 °Mostly clear

Castro Valley, Tuesday, 24 November

Mostly clear. High 62°, low 46°.

Pressure30.09 inHg
Wind3.2 mph NE
Humidity51%
Visibility—
Dew point36°
Wed, 2555° / 52°0.07Light rain
55 °Light rain

Castro Valley, Wednesday, 25 November

Light rain. High 55°, low 52°.

Pressure30.09 inHg
Wind4.4 mph SE
Humidity76%
Visibility—
Dew point46°
Thu, 2661° / 50°0.03Light rain
61 °Light rain

Castro Valley, Thursday, 26 November

Light rain. High 61°, low 50°.

Pressure30.21 inHg
Wind4.5 mph SE
Humidity68%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 0259° / 44°0.16Climate normal
59 °Climate normal

Castro Valley, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high59°
Average low44°
Average precipitation0.16 in
Chance of precipitation25%
Record high67° (1986)
Record low31° (2022)
Thu, 0359° / 45°0.11Climate normal
59 °Climate normal

Castro Valley, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high59°
Average low45°
Average precipitation0.11 in
Chance of precipitation28%
Record high71° (1979)
Record low37° (1968)
Fri, 0459° / 45°0.07Climate normal
59 °Climate normal

Castro Valley, Friday, 4 December

Climate normal for this date — 60-year average.

Average high59°
Average low45°
Average precipitation0.07 in
Chance of precipitation23%
Record high69° (1979)
Record low37° (2013)
Sat, 0558° / 46°0.07Climate normal
58 °Climate normal

Castro Valley, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high58°
Average low46°
Average precipitation0.07 in
Chance of precipitation25%
Record high66° (2014)
Record low36° (1972)
Sun, 0658° / 45°0.07Climate normal
58 °Climate normal

Castro Valley, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high58°
Average low45°
Average precipitation0.07 in
Chance of precipitation30%
Record high68° (1962)
Record low35° (1978)
Mon, 0758° / 44°0.08Climate normal
58 °Climate normal

Castro Valley, Monday, 7 December

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.08 in
Chance of precipitation28%
Record high70° (2020)
Record low33° (1978)
Tue, 0858° / 44°0.06Climate normal
58 °Climate normal

Castro Valley, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.06 in
Chance of precipitation18%
Record high69° (2020)
Record low31° (1972)
Wed, 0958° / 44°0.06Climate normal
58 °Climate normal

Castro Valley, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high58°
Average low44°
Average precipitation0.06 in
Chance of precipitation27%
Record high69° (1990)
Record low25° (1972)
Thu, 1057° / 44°0.1Climate normal
57 °Climate normal

Castro Valley, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high57°
Average low44°
Average precipitation0.1 in
Chance of precipitation25%
Record high64° (1962)
Record low28° (1972)

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.