Weather in San Marcos, United States 🇺🇸
In San Marcos right now it is 20°C and clear, feeling like 19°C. Expect 49% humidity and winds of about 4 km/h, and the UV index is 0 (low). Across the coming days, San Marcos should see roughly 16°C to 28°C.
Hourly Forecast for San Marcos
14-Day Forecast for San Marcos
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Additional Forecasts for San Marcos
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Historical Weather
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Best Time to Be Outside in San Marcos Today
The most comfortable window in San Marcos today looks like 07:00 to 10:00, when it is around 22°C. It should stay dry through that window. No significant rain is expected in the next several hours.
Frequently Asked Questions about Weather in San Marcos
What is the temperature in San Marcos right now?
San Marcos is sitting at 20°C (68°F) right now, clear (feels like 19°C).
What's the weather like in San Marcos right now?
Current weather in San Marcos: Clear, humidity 49%, wind 4 km/h NE.
What is today's forecast for San Marcos?
Today in San Marcos: high 28°C, low 20°C, sunny. Chance of rain: 2%.
What is the 7-day weather forecast for San Marcos?
Daily highs and lows for San Marcos:
- 2026-10-19: 28°C / 20°C
- 2026-10-20: 25°C / 18°C
- 2026-10-21: 24°C / 16°C
- 2026-10-22: 20°C / 15°C
- 2026-10-23: 23°C / 14°C
- 2026-10-24: 29°C / 18°C
- 2026-10-25: 31°C / 19°C
Is it going to rain in San Marcos today?
There is a 2% chance of rain in San Marcos today.
What is the wind speed in San Marcos right now?
Wind in San Marcos is currently 4 km/h (2 mph) from the NE.
What is the UV index in San Marcos right now?
The UV index in San Marcos is currently 0 (low). Sun protection is recommended when the index is 3 or higher.
