What is today's weather forecast for Alto, CA?

Today's forecast for Alto shows a high of 53 degrees and a low of 43 degrees Fahrenheit. Sunny, with a high near 53.

What is the 7-day weather forecast for Alto, CA?

The 7-day forecast for Alto shows highs from 53 to 61 degrees and lows from 43 to 52 degrees Fahrenheit. Expect precipitation on 5 days with chances of 20% or higher.

Will it rain in Alto, CA this week?

Yes, rain is possible in Alto this week. Precipitation chances: Monday (20% chance), Tuesday (50% chance), Wednesday (50% chance), Thursday (50% chance), Friday (50% chance).

How accurate is the Alto weather forecast?

WeatherForYou provides highly accurate Alto forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Alto, CA Weather Forecast and Current Conditions

WEATHER ALERTS - Dense Fog Advisory

Current Conditions From Nearby Local Station

Switch to Metric Units

41°F
Feels Like 41°F

Humidity 92% Dew Point 39°F Wind S 2 MPH Gusts 6 Barometer 30.09 in.

Solar Rad 74 w/m²

Report from a personal weather station 0.2 mi. ENE of central Alto
at 7:59 AM Sat, Dec 13, 2025

Point Forecast at a Glance

SatDec 13

SunDec 14

MonDec 15

TueDec 16

40%

WedDec 17

50%

ThuDec 18

50%

FriDec 19

50%

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 53°F to 61°F. Unsettled weather expected with rain likely on at least 5 days.

Climate Context

This week's forecast shows temperatures running 1°F above the historical average for December. Normal highs for this period are around 58°F with lows around 42°F.

This Date in Weather History

1915 - A heavy snowstorm kicked off the snowiest winter in modern records for western New England.

Alto, CA 7 Day Weather Forecast Details

Saturday Dec 13

Day: Sunny, with a high near 53. North northwest wind 5 to 7 mph becoming light and variable in the afternoon.

Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 43. West wind around 5 mph becoming calm after midnight.

Sunday Dec 14

Day: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 57. Calm wind becoming east northeast around 5 mph in the morning.

Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 44. Calm wind.

Monday Dec 15

Day: Patchy fog before 7am. Otherwise, partly sunny, with a high near 61. Northeast wind 3 to 5 mph.

Night: A 20 percent chance of rain after 10pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 51.

Tuesday Dec 16

Day: A 40 percent chance of rain, mainly after 10am. Areas of fog before 10am. Otherwise, cloudy, with a high near 61.

Night: Rain likely. Cloudy, with a low around 52.

Wednesday Dec 17

Day: A chance of rain, mainly before 4pm. Mostly cloudy, with a high near 60.

Night: A chance of rain, mainly after 10pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 48.

Thursday Dec 18

Day: A chance of rain. Mostly cloudy, with a high near 59.

Night: A chance of rain. Cloudy, with a low around 51.

Friday Dec 19

Day: Rain likely. Cloudy, with a high near 59.

About Alto, CA

Alto (Spanish for "Tall") is a census-designated place adjacent to Mill Valley in Marin County, California. It lies at an elevation of 26 feet (8 m). The population was 732 at the 2020 census.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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