San Marcos
Altar, Sonora, Mexico
Current Weather
26°79°
Clear
Feels Like: 24°75°
Min: 14°57°
Max: 29°85°
The next few hours will be clear, with today reaching 29°C and dropping to 9°C. The coming days will be partly cloudy throughout the day.
Hourly Forecast
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Air Quality
Air quality is satisfactory, and air pollution poses little or no risk.
Daylight Hours
06:44
Sunrise
17:38
Sunset
Moon
17:18
Moonrise
07:14
Moonset
Daily Forecast
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View stargazing scoreWeather in San Marcos today, October 26, 2026
San Marcos starts October 26, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds. Expect a brighter morning, with limited cloud around 0% by 10:00. Conditions start on a settled note.San Marcos starts October 26, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds. Expect a brighter morning, with limited cloud around 0% by 10:00. Conditions start on a settled note.
Temperatures climb from an overnight low near 14°C toward a daytime high of about 29°C. The air stays humid, with relative humidity between 18% and 42% and the peak around 22:00. Winds stay light, near 15 km/h by 23:00, so the day feels still more than breezy.Temperatures climb from an overnight low near 57°F toward a daytime high of about 85°F. The air stays humid, with relative humidity between 18% and 42% and the peak around 22:00. Winds stay light, near 9 mph by 23:00, so the day feels still more than breezy.
Through the afternoon cloud remains the main feature, with cover near 100% around 17:00. Bright spells should stay limited even as the day wears on. Expect visibility around 16.1 km. Expect sunrise at 06:44, sunset at 17:38, and 10 hours 54 minutes of sunlight today overall.Through the afternoon cloud remains the main feature, with cover near 100% around 17:00. Bright spells should stay limited even as the day wears on. Expect visibility around 10 mi. Expect sunrise at 06:44, sunset at 17:38, and 10 hours 54 minutes of sunlight today overall.
Taken together, settled sunshine in San Marcos on October 26, 2026 makes outdoor timing easier, with highs near 29°C.Taken together, settled sunshine in San Marcos on October 26, 2026 makes outdoor timing easier, with highs near 85°F.
Frequently asked questions about weather in San Marcos
How warm does it get in San Marcos?
The warmest month in San Marcos is July, with average high temperatures of 39°C. The average temperature during this period is around 32°C.The warmest month in San Marcos is July, with average high temperatures of 102°F. The average temperature during this period is around 90°F.
How cold does it get in San Marcos?
The coldest month in San Marcos is January, with average low temperatures of 7°C. The average temperature during this period is around 13°C.The coldest month in San Marcos is January, with average low temperatures of 44°F. The average temperature during this period is around 56°F.
What is the wettest time of year in San Marcos?
The wettest month in San Marcos is August, with an average of 43 mm of precipitation.The wettest month in San Marcos is August, with an average of 1.7 in of precipitation.
What is the driest time of year in San Marcos?
The driest month in San Marcos is May, with an average of 1 mm of precipitation.The driest month in San Marcos is May, with an average of 0 in of precipitation.