San Antonio, CA

Unincorporated community in Sonoma County, California

San Antonio is a small unincorporated community in Sonoma County, California. It is 4.5 miles NW of Petaluma, the nearest town. Its ZIP code is 94954.

San Antonio at a glance

State
California
County
Sonoma County
ZIP code
94954
Nearest town
Petaluma (4.5 mi)
Time zone
America/Los Angeles
Coordinates
38.1839, -122.5903

Weather in San Antonio now

Loading the National Weather Service forecast…

San Antonio weather by the hour

San Antonio weather for the next 7 days

Source: National Weather Service (NOAA) · forecast for the coordinates of San Antonio.

This week in San Antonio

Sunrise, sunset and moon in San Antonio

What is the weather usually like in San Antonio?

Csb
Warm-summer Mediterranean climate
Köppen climate classification, calculated from the 1991–2020 normals

Average high and low temperature (°F)

33°47°60°74°87°58°39°Jan61°40°Feb65°42°Mar68°44°Apr72°47°May78°50°Jun81°52°Jul81°53°Aug82°51°Sep76°48°Oct65°42°Nov58°38°Dec

Average precipitation (inches)

4.8"Jan5.2"Feb3.3"Mar1.7"Apr0.9"May0.3"Jun0.0"Jul0.1"Aug0.1"Sep1.3"Oct2.7"Nov5.2"Dec

Best time to visit San Antonio: June to August and October, with mild temperatures and fewer rainy days.

Source: NOAA NCEI U.S. Climate Normals 1991–2020, station PETALUMA AP, CA US (USC00046826), adjusted for the elevation of San Antonio.

San Antonio weather month by month

January
58° 39°F
4.8 in of rain · 8 wet days
February
61° 40°F
5.2 in of rain · 8 wet days
March
65° 42°F
3.3 in of rain · 8 wet days
April
68° 44°F
1.7 in of rain · 4 wet days
May
72° 47°F
0.9 in of rain · 2 wet days
June
78° 50°F
0.3 in of rain · 1 wet days
July
81° 52°F
0.0 in of rain · under 1 wet day
August
81° 53°F
0.1 in of rain · under 1 wet day
September
82° 51°F
0.1 in of rain · under 1 wet day
October
76° 48°F
1.3 in of rain · 2 wet days
November
65° 42°F
2.7 in of rain · 5 wet days
December
58° 38°F
5.2 in of rain · 9 wet days

Sunrise and sunset in San Antonio through the year

MonthSunriseSunsetDaylight
January7:23 AM5:15 PM9 h 51 min
February6:58 AM5:50 PM10 h 51 min
March7:19 AM7:18 PM11 h 59 min
April6:32 AM7:47 PM13 h 15 min
May5:57 AM8:15 PM14 h 18 min
June5:45 AM8:36 PM14 h 51 min
July5:58 AM8:34 PM14 h 36 min
August6:24 AM8:05 PM13 h 41 min
September6:51 AM7:19 PM12 h 28 min
October7:18 AM6:33 PM11 h 15 min
November6:50 AM4:59 PM10 h 9 min
December7:18 AM4:52 PM9 h 34 min

Times for the 15th of each month, local time (America/Los Angeles).

What is the weather like in San Antonio?

San Antonio has a warm-summer mediterranean climate. The warmest month is September, with an average high of 82°F (28°C), and the coldest is December, with average lows of 38°F (4°C).

It gets about 25.6 inches (649 mm) of precipitation a year. The wettest month is February and the driest is July.

The best time to visit San Antonio is June to August and October. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.

Webcams near San Antonio

The closest live webcam is US-101 · S OF FRONTAGE RD, 0.6 miles W of San Antonio.

US-101 · S OF FRONTAGE RDUS-101 South · Petaluma · 0.6 mi W
US-101 · Tunzi RoadUS-101 North · Petaluma · 1.5 mi N
US-101 · Kastania RoadUS-101 North · Petaluma · 2.7 mi N
US-101 · S101 NOF Kastania RdUS-101 South · Petaluma · 3.2 mi NW
Petaluma: East Petaluma › South: TVE90 - US-101 : AT SR-116Petaluma · 3.9 mi NWOn Windy
US-101 · AT SR-116US-101 South · Petaluma · 3.9 mi NW
San Mateo › South: TVE91 - US-101 : AT ATHERTON AVESan Mateo · 4.8 mi SOn Windy
US-101 · AT ATHERTON AVEUS-101 South · Novato · 4.8 mi S
US-101 · AT NOF E WASHINGTON STUS-101 North · Petaluma · 5.3 mi NW

Webcams: Windy.com · Traffic cameras: Caltrans. Distances in a straight line from San Antonio.

Do you know San Antonio? Tell us about it

Help other travelers: share what makes San Antonio special. We review every message before publishing it.

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Map of San Antonio, CA

Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.

San Antonio Street View

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Towns near San Antonio

Other communities near San Antonio

Questions about San Antonio

Where is San Antonio, CA?

San Antonio is an unincorporated community in Sonoma County, California, 4.5 miles NW of Petaluma.

What county is San Antonio in?

San Antonio is in Sonoma County, California.

What is the ZIP code of San Antonio, CA?

The ZIP code for San Antonio is 94954.

What is the nearest town to San Antonio?

Petaluma, 4.5 miles away.

Are there webcams near San Antonio?

Yes. The closest is US-101 · S OF FRONTAGE RD, 0.6 miles away.

What is the hottest month in San Antonio?

September, with an average high of 82°F (28°C).

What is the coldest month in San Antonio?

December, with an average low of 38°F (4°C).

How much does it rain in San Antonio?

About 25.6 inches (649 mm) a year; the wettest month is February.

Does it snow in San Antonio?

Snow is very rare or not recorded at the nearest weather station.

When is the best time to visit San Antonio?

June to August and October, when temperatures are most pleasant and rainy days are fewer.

What climate does San Antonio have?

Warm-summer mediterranean (Köppen Csb).

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