San Marcos

Current Weather

23°74°

Mostly Cloudy

Feels Like: 24°75°

Min: 19°67°

Max: 25°77°

The next few hours will be overcast, with today reaching 25°C and dropping to 20°C. The coming days will be light rain throughout the day and possible thunderstorms in the afternoon.

Hourly Forecast
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Air Quality
31
Good

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

GoodHazardous
Daylight Hours

05:38

Sunrise

17:23

Sunset

11 hours 45 minutes of sunlight today
Moon

07:08

Moonrise

18:10

Moonset

Daily Forecast

Today

19°67°
25°77°

Tuesday

20°68°
26°80°

Wednesday

20°68°
26°78°

Thursday

20°68°
27°80°

Friday

20°67°
26°79°

Saturday

20°67°
26°79°

Sunday

19°67°
25°77°

Monday

19°67°
25°76°

Tuesday

20°67°
24°76°

Wednesday

20°67°
25°77°
UV Index
Wear sunscreen
5Moderate
LowExtreme
Humidity
82%Humid
LowHigh
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Weather in San Marcos today, October 12, 2026

San Marcos starts October 12, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. The morning carries the wetter risk, with rain chances near 76% and the highest odds around 10:00. Cloud is also thick early on, peaking near 83% around 09:00.San Marcos starts October 12, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. The morning carries the wetter risk, with rain chances near 76% and the highest odds around 10:00. Cloud is also thick early on, peaking near 83% around 09:00.

Temperatures climb from an overnight low near 19°C toward a daytime high of about 25°C. The air stays humid, with relative humidity between 74% and 98% and the peak around 21:00. A lighter breeze peaks around 09:00 near 14 km/h.Temperatures climb from an overnight low near 67°F toward a daytime high of about 77°F. The air stays humid, with relative humidity between 74% and 98% and the peak around 21:00. A lighter breeze peaks around 09:00 near 9 mph.

Expect the wet theme to continue later, as rain odds reach 94% near 13:00. Cloud amounts hold near 84% around 23:00. Expect visibility near 15.6 km, with poorer spells close to 8.2 km. The sun rises at 05:38 and sets at 17:23, for a total of 11 hours 45 minutes of sunlight today.Expect the wet theme to continue later, as rain odds reach 94% near 13:00. Cloud amounts hold near 84% around 23:00. Expect visibility near 9.7 mi, with poorer spells close to 5.1 mi. The sun rises at 05:38 and sets at 17:23, for a total of 11 hours 45 minutes of sunlight today.

In short, treat October 12, 2026 in San Marcos as a damp day: pack covers, watch the wetter hours, and expect a high near 25°C.In short, treat October 12, 2026 in San Marcos as a damp day: pack covers, watch the wetter hours, and expect a high near 77°F.

Frequently asked questions about weather in San Marcos

How warm does it get in San Marcos?

The warmest month in San Marcos is April, with average high temperatures of 34°C. The average temperature during this period is around 28°C.The warmest month in San Marcos is April, with average high temperatures of 93°F. The average temperature during this period is around 83°F.

How cold does it get in San Marcos?

The coldest month in San Marcos is January, with average low temperatures of 22°C. The average temperature during this period is around 26°C.The coldest month in San Marcos is January, with average low temperatures of 71°F. The average temperature during this period is around 79°F.

What is the wettest time of year in San Marcos?

The wettest month in San Marcos is October, with an average of 416 mm of precipitation.The wettest month in San Marcos is October, with an average of 16.4 in of precipitation.

What is the driest time of year in San Marcos?

The driest month in San Marcos is February, with an average of 3 mm of precipitation.The driest month in San Marcos is February, with an average of 0.1 in of precipitation.

View full climate insights for San Marcos →