Unlock Historical Data
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:43
Sunrise
19:52
Sunset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Air Quality Data Available
Upgrade to access real-time air quality data for San Marcos.
Resources
UV Index
Humidity
Frequently asked questions about weather in San Marcos
How warm does it get in San Marcos?
The warmest month in San Marcos is August, with average high temperatures of 29°C. The average temperature during this period is around 24°C.
How cold does it get in San Marcos?
The coldest month in San Marcos is January, with average low temperatures of 9°C. The average temperature during this period is around 13°C.
What is the wettest time of year in San Marcos?
The wettest month in San Marcos is January, with an average of 81mm of precipitation.
What is the driest time of year in San Marcos?
The driest month in San Marcos is June, with an average of 2mm of precipitation.
Explore more weather forecasts
- Escondido, California
- New York City, New York
- Vista, California
- Los Angeles, California
- Encinitas, California
- Brooklyn, New York
- Solana Beach, California
- Chicago, Illinois
- Carlsbad, California
- Houston, Texas
- Oceanside, California
- Queens, New York
- Poway, California
- Phoenix, Arizona
- Camp Pendleton South, California
- Philadelphia, Pennsylvania
