Last updated: March 2, 2024
The weather in San Marcos, United States, during October is characterized by an average temperature of 20°C (69°F). Highs can soar to 35°C (95°F), while lows may dip to 11°C (52°F). Typically, the humidity level in San Marcos throughout October hovers around 58%.
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Humidity
In October, San Marcos averages 12 mm (0.5 inches) of rainfall, typically over the course of 2 rainy days. The month enjoys an average of 11 hours 18 minutes of daylight, with the sun shining for approximately 9 hours 33 minutes each day. Additionally, there is a 64% probability of sunny days during this period.
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In October, the UV Index in San Marcos reaches a maximum of 7, indicating a level of High exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 25 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 2 | 4 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 1 | 0 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||