San Marcos

Current Weather

22°72°

Drizzle and Humid

Feels Like: 23°73°

Min: 21°70°

Max: 26°78°

The next few hours will be humid and mostly cloudy, with today reaching 26°C and dropping to 21°C. The coming days will be light rain throughout the day.

Hourly Forecast
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Air Quality
23
Good

Air quality is satisfactory, and air pollution poses little or no risk.

GoodHazardous
Daylight Hours

05:50

Sunrise

17:33

Sunset

11 hours 42 minutes of sunlight today
Moon

06:32

Moonrise

Daily Forecast

Today

21°70°
26°78°

Monday

21°70°
27°81°

Tuesday

21°70°
24°76°

Wednesday

21°69°
26°79°

Thursday

19°67°
27°81°

Friday

22°71°
27°81°

Saturday

21°70°
26°79°

Sunday

21°70°
25°76°

Monday

21°69°
27°81°

Tuesday

21°69°
27°81°
UV Index
No protection needed
1Low
LowExtreme
Humidity
98%Very Humid
LowHigh
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Weather in San Marcos today, October 11, 2026

San Marcos starts October 11, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.San Marcos starts October 11, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.

Temperatures climb from an overnight low near 21°C toward a daytime high of about 26°C. Moisture in the air spans 97%-100%, with the highest values around 20:00. Airflow remains manageable, reaching about 6 km/h around 18:00.Temperatures climb from an overnight low near 70°F toward a daytime high of about 78°F. Moisture in the air spans 97%-100%, with the highest values around 20:00. Airflow remains manageable, reaching about 3 mph around 18:00.

Expect the wet theme to continue later, as rain odds reach 100% near 17:00. Cloud amounts hold near 100% around 18:00. Horizontal visibility sits around 12.2 km, briefly nearer 5.6 km. The sun rises at 05:50 and sets at 17:33, for a total of 11 hours 42 minutes of sunlight today.Expect the wet theme to continue later, as rain odds reach 100% near 17:00. Cloud amounts hold near 100% around 18:00. Horizontal visibility sits around 7.6 mi, briefly nearer 3.5 mi. The sun rises at 05:50 and sets at 17:33, for a total of 11 hours 42 minutes of sunlight today.

In short, treat October 11, 2026 in San Marcos as a damp day: pack covers, watch the wetter hours, and expect a high near 26°C.In short, treat October 11, 2026 in San Marcos as a damp day: pack covers, watch the wetter hours, and expect a high near 78°F.

Frequently asked questions about weather in San Marcos

How warm does it get in San Marcos?

The warmest month in San Marcos is May, with average high temperatures of 31°C. The average temperature during this period is around 25°C.The warmest month in San Marcos is May, with average high temperatures of 87°F. The average temperature during this period is around 77°F.

How cold does it get in San Marcos?

The coldest month in San Marcos is January, with average low temperatures of 17°C. The average temperature during this period is around 20°C.The coldest month in San Marcos is January, with average low temperatures of 62°F. The average temperature during this period is around 68°F.

What is the wettest time of year in San Marcos?

The wettest month in San Marcos is September, with an average of 339 mm of precipitation.The wettest month in San Marcos is September, with an average of 13.3 in of precipitation.

What is the driest time of year in San Marcos?

The driest month in San Marcos is April, with an average of 79 mm of precipitation.The driest month in San Marcos is April, with an average of 3.1 in of precipitation.

View full climate insights for San Marcos →