EN
English Español

As of 06:47 PDT

Weather in Alto, CA

52°Current weather

Alto, Tuesday, 13 October, 06:47

Clear. Feels like 51°. High 73°, low 48°.

Pressure30.03 inHg
Wind2.6 mph NW
Humidity79%
Visibility6.2 mi
Dew point46°

Monthly outlook for Alto, CA: average high 68.2°, average low 53.6°. That is 0.4° below the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.8 inches. The warmest day looks like 16 October (84.7°), the coolest 14 October (47.8°).

68.2°/53.6°
Average high / low
−0.4°
Below normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
13 October – 22 October70.4°69.7°+0.4°
23 October – 1 November64.6°67.1°-1.4°
2 November – 11 Novemberat normal64.2°—

October records over 66 years

98.1°6 October 2024All-time high
41.2°31 October 1989All-time low

Climate normals and records are computed from the nearest reference point — Marin City (2 mi).

Wed, 1475° / 48°0Clear
75 °Clear

Alto, Wednesday, 14 October

Clear. High 75°, low 48°.

Pressure30.15 inHg
Wind2.2 mph S
Humidity49%
Visibility6.2 mi
Dew point51°
Thu, 1583° / 51°0Clear
83 °Clear

Alto, Thursday, 15 October

Clear. High 83°, low 51°.

Pressure30.12 inHg
Wind2.7 mph NE
Humidity21%
Visibility6.2 mi
Dew point37°
Fri, 1685° / 59°0Clear
85 °Clear

Alto, Friday, 16 October

Clear. High 85°, low 59°.

Pressure30.06 inHg
Wind4.4 mph NE
Humidity17%
Visibility6.2 mi
Dew point34°
Sat, 1782° / 56°0Clear
82 °Clear

Alto, Saturday, 17 October

Clear. High 82°, low 56°.

Pressure30.03 inHg
Wind3.6 mph W
Humidity33%
Visibility—
Dew point42°
Sun, 1864° / 52°0Mostly clear
64 °Mostly clear

Alto, Sunday, 18 October

Mostly clear. High 64°, low 52°.

Pressure30.03 inHg
Wind11.7 mph W
Humidity61%
Visibility—
Dew point47°
Mon, 1960° / 53°0Overcast
60 °Overcast

Alto, Monday, 19 October

Overcast. High 60°, low 53°.

Pressure30.03 inHg
Wind18.5 mph NW
Humidity80%
Visibility—
Dew point51°
Tue, 2058° / 49°0Clear
58 °Clear

Alto, Tuesday, 20 October

Clear. High 58°, low 49°.

Pressure30.03 inHg
Wind16.1 mph W
Humidity53%
Visibility—
Dew point37°
Wed, 2162° / 51°0Clear
62 °Clear

Alto, Wednesday, 21 October

Clear. High 62°, low 51°.

Pressure30.03 inHg
Wind11.3 mph W
Humidity49%
Visibility—
Dew point38°
Thu, 2263° / 56°0Clear
63 °Clear

Alto, Thursday, 22 October

Clear. High 63°, low 56°.

Pressure30.15 inHg
Wind8.1 mph SW
Humidity40%
Visibility—
Dew point35°
Fri, 2370° / 57°0Clear
70 °Clear

Alto, Friday, 23 October

Clear. High 70°, low 57°.

Pressure30.18 inHg
Wind12.4 mph NE
Humidity42%
Visibility—
Dew point37°
Sat, 2468° / 59°0Clear
68 °Clear

Alto, Saturday, 24 October

Clear. High 68°, low 59°.

Pressure30.24 inHg
Wind11.8 mph NE
Humidity34%
Visibility—
Dew point33°
Sun, 2563° / 55°0Clear
63 °Clear

Alto, Sunday, 25 October

Clear. High 63°, low 55°.

Pressure30.09 inHg
Wind9.7 mph SW
Humidity37%
Visibility—
Dew point35°
Mon, 2664° / 55°0Clear
64 °Clear

Alto, Monday, 26 October

Clear. High 64°, low 55°.

Pressure29.94 inHg
Wind7.9 mph SW
Humidity58%
Visibility—
Dew point44°
Tue, 2762° / 55°0Clear
62 °Clear

Alto, Tuesday, 27 October

Clear. High 62°, low 55°.

Pressure30.03 inHg
Wind10.2 mph SW
Humidity69%
Visibility—
Dew point49°
Wed, 2862° / 55°0Partly cloudy
62 °Partly cloudy

Alto, Wednesday, 28 October

Partly cloudy. High 62°, low 55°.

Pressure30.03 inHg
Wind8.9 mph SW
Humidity73%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2966° / 51°0.06Climate normal
66 °Climate normal

Alto, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high66°
Average low51°
Average precipitation0.06 in
Chance of precipitation22%
Record high78° (1965)
Record low43° (1971)
Fri, 3066° / 51°0.06Climate normal
66 °Climate normal

Alto, Friday, 30 October

Climate normal for this date — 60-year average.

Average high66°
Average low51°
Average precipitation0.06 in
Chance of precipitation17%
Record high80° (1966)
Record low42° (1971)
Sat, 3167° / 50°0.03Climate normal
67 °Climate normal

Alto, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high67°
Average low50°
Average precipitation0.03 in
Chance of precipitation17%
Record high81° (1966)
Record low41° (1989)
Sun, 0167° / 50°0.06Climate normal
67 °Climate normal

Alto, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high67°
Average low50°
Average precipitation0.06 in
Chance of precipitation15%
Record high81° (1966)
Record low41° (1984)
Mon, 0267° / 50°0.04Climate normal
67 °Climate normal

Alto, Monday, 2 November

Climate normal for this date — 60-year average.

Average high67°
Average low50°
Average precipitation0.04 in
Chance of precipitation13%
Record high80° (1997)
Record low42° (1974)
Tue, 0366° / 50°0.03Climate normal
66 °Climate normal

Alto, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high66°
Average low50°
Average precipitation0.03 in
Chance of precipitation12%
Record high80° (1976)
Record low43° (1971)
Wed, 0466° / 50°0.03Climate normal
66 °Climate normal

Alto, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high66°
Average low50°
Average precipitation0.03 in
Chance of precipitation10%
Record high80° (1976)
Record low42° (2003)
Thu, 0564° / 50°0.06Climate normal
64 °Climate normal

Alto, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high64°
Average low50°
Average precipitation0.06 in
Chance of precipitation15%
Record high77° (2020)
Record low44° (1971)
Fri, 0664° / 51°0.07Climate normal
64 °Climate normal

Alto, Friday, 6 November

Climate normal for this date — 60-year average.

Average high64°
Average low51°
Average precipitation0.07 in
Chance of precipitation20%
Record high77° (1976)
Record low42° (1996)
Sat, 0764° / 50°0.09Climate normal
64 °Climate normal

Alto, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high64°
Average low50°
Average precipitation0.09 in
Chance of precipitation25%
Record high79° (1991)
Record low42° (1971)
Sun, 0863° / 49°0.08Climate normal
63 °Climate normal

Alto, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high63°
Average low49°
Average precipitation0.08 in
Chance of precipitation25%
Record high75° (1976)
Record low41° (1983)
Mon, 0963° / 48°0.09Climate normal
63 °Climate normal

Alto, Monday, 9 November

Climate normal for this date — 60-year average.

Average high63°
Average low48°
Average precipitation0.09 in
Chance of precipitation20%
Record high73° (1976)
Record low41° (1998)
Tue, 1062° / 49°0.14Climate normal
62 °Climate normal

Alto, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high62°
Average low49°
Average precipitation0.14 in
Chance of precipitation28%
Record high76° (1990)
Record low40° (1982)
Wed, 1162° / 49°0.1Climate normal
62 °Climate normal

Alto, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high62°
Average low49°
Average precipitation0.1 in
Chance of precipitation27%
Record high76° (1990)
Record low37° (2000)

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 Alto, 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 Alto, 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.