San Marcos

Current Weather

24°74°

Humid and Overcast

Feels Like: 23°74°

Min: 23°73°

Max: 29°84°

The next few hours will be humid and overcast, with tomorrow reaching 31°C and dropping to 22°C. The coming days will be light rain throughout the day and possible thunderstorms in the afternoon.

Hourly Forecast
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86%
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86%
44%
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Air Quality
12
Good

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

GoodHazardous
Daylight Hours

05:29

Sunrise

17:16

Sunset

11 hours 47 minutes of sunlight today
Moon

06:07

Moonrise

Daily Forecast

Sunday

23°73°
29°84°

Today

23°74°
31°88°

Tuesday

22°72°
32°90°

Wednesday

23°73°
32°90°

Thursday

23°74°
32°90°

Friday

23°73°
32°90°

Saturday

24°75°
30°85°

Sunday

23°74°
32°90°

Monday

24°74°
27°80°

Tuesday

23°74°
27°80°
UV Index
No protection needed
0Low
LowExtreme
Humidity
99%Very Humid
LowHigh
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Weather in San Marcos tomorrow, 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 72% and the highest odds around 10:00. Cloud is also thick early on, peaking near 99% around 00:00.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 72% and the highest odds around 10:00. Cloud is also thick early on, peaking near 99% around 00:00.

Temperatures climb from an overnight low near 23°C toward a daytime high of about 31°C. Expect humidity between 64% and 100%, most humid near 00:00. Airflow remains manageable, reaching about 7 km/h around 09:00.Temperatures climb from an overnight low near 74°F toward a daytime high of about 88°F. Expect humidity between 64% and 100%, most humid near 00:00. Airflow remains manageable, reaching about 4 mph around 09:00.

Through the afternoon wet weather remains a factor, with rain chances near 86% around 13:00. Cloud also stays substantial, close to 97% near 18:00. Visibility stays near 16.1 km. Daylight runs from 05:29 to 17:16, lasting 11 hours 47 minutes of sunlight today.Through the afternoon wet weather remains a factor, with rain chances near 86% around 13:00. Cloud also stays substantial, close to 97% near 18:00. Visibility stays near 10 mi. Daylight runs from 05:29 to 17:16, lasting 11 hours 47 minutes of sunlight today.

Taken together, San Marcos looks wet enough on October 12, 2026 that flexible outdoor plans work best, with temperatures peaking near 31°C.Taken together, San Marcos looks wet enough on October 12, 2026 that flexible outdoor plans work best, with temperatures peaking near 88°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 29°C. The average temperature during this period is around 25°C.The warmest month in San Marcos is May, with average high temperatures of 85°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 February, with average low temperatures of 20°C. The average temperature during this period is around 23°C.The coldest month in San Marcos is February, with average low temperatures of 68°F. The average temperature during this period is around 73°F.

What is the wettest time of year in San Marcos?

The wettest month in San Marcos is November, with an average of 431 mm of precipitation.The wettest month in San Marcos is November, with an average of 17 in of precipitation.

What is the driest time of year in San Marcos?

The driest month in San Marcos is March, with an average of 61 mm of precipitation.The driest month in San Marcos is March, with an average of 2.4 in of precipitation.

View full climate insights for San Marcos →