Local weather forecast

Weather in San Marcos, CA

Updated 2026-08-11 08:15 local time · ZIP codes 92069, 92078

Partly Cloudy
Now72°F

Partly Cloudy

High / Low88° / 67°
Rain chance11%
Wind2 mph
Weather alerts

Active alerts

1
Coastal Flood Advisory issued August 11 at 1:37AM PDT until August 12 at 11:00PM PDT by NWS San Diego CA

* WHAT...Minor coastal flooding expected during the evening high tides. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...From 6 PM Monday to 11 PM PDT Wednesday. * IMPACTS...Flooding of low lying parking lots, parks, and roads. * ADDITIONAL DETAILS...High tides of 7.2 to 7.5 will peak each evening between 7:30PM-10PM due to astronomical high tides.

Safety instructions

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

Hourly

Next hours

NowPartly Cloudy72°20% rain
9 AMPartly Cloudy75°12% rain
10 AMSunny79°7% rain
11 AMSunny88°4% rain
12 PMSunny88°4% rain
1 PMSunny88°4% rain
2 PMSunny86°6% rain
3 PMSunny80°8% rain
4 PMSunny83°6% rain
5 PMSunny82°5% rain
6 PMSunny79°6% rain
7 PMSunny73°11% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
88° 67°Sunny
Rain 11%Gust 12 mph
Tomorrow2026-08-12
Sunny
81° 67°Sunny
Rain 6%Gust 13 mph
Thursday2026-08-13
Partly Cloudy
78° 66°Partly Cloudy
Rain 11%Gust 11 mph
Conditions

Weather details

Feels like78°F
Humidity90%
Pressure29.98 inHg
Visibility6 mi
Wind2 mph N
Wind gusts7 mph
Precipitation0.00 in
UV index1
Daylight

Sunrise, sunset and moon

Sunrise06:08 AM
Sunset07:38 PM
Moonrise04:24 AM
Moon phaseNew Moon
Practical guide

Weather insights for today

Umbrella not essential

Rain chance stays relatively low over the next 12 hours (up to 20%).

Light layers should work

It feels like 78°F with winds near 2 mph.

Best window: 7 PM

73°F, 11% rain chance and 6 mph wind.

Driving conditions look generally normal

Visibility is around 6 mi; gusts may reach 14 mph.

Good conditions for an easy run

Current temperature is 72°F, wind 2 mph, rain chance up to 20%.

Low UV protection needs

UV index is 1.

San Marcos weather today

Partly Cloudy and 72°F in San Marcos, CA. Today's high is 88°F with a 11% rain chance. Winds are around 2 mph with gusts near 7 mph. Relative humidity is 90%, pressure is 29.98 inHg, and visibility is about 6 miles.

Tonight and tomorrow in San Marcos

Sunrise is at 06:08 AM and sunset is at 07:38 PM. Tomorrow's forecast calls for Sunny with a high near 81°F and a low near 67°F. The maximum rain chance is 6%.

Nearby

Weather near San Marcos

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