San Marcos, CA Weather Forecast
San Diego County, California
Live radar, warnings and storm tracking for San Marcos, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for San Marcos
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
San Marcos, CA at a glance
San Marcos is home to about 94,188 people in San Diego County, across 25 square miles. It ranks 79th by population of 450 places in California with a forecast here. The nearest neighbour with its own forecast is Escondido, 6 miles away.
- County
- San Diego County
- Population
- 94,188 2023 est.
- Land area
- 25 sq mi
- People per sq mi
- 3,833
- Forecast point
- 33.1326°N, 117.1699°W
How well can the network see San Marcos?
The nearest Doppler radar is KNKX (San Diego, CA), to the SSE. Its lowest scan passes about 900 ft above San Marcos. That is about as close as US radar coverage gets: low-level rotation and gust fronts over San Marcos show up clearly. San Marcos is closer to its radar than 89% of US cities.
The closest weather station is KCRQ (Carlsbad/Palomar Arpt). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near San Marcos
- Escondido, CA6 mi
- Vista, CA6 mi
- Carlsbad, CA7 mi
- Encinitas, CA8 mi
- Oceanside, CA10 mi
- Solana Beach, CA11 mi
- Del Mar, CA13 mi
- Poway, CA13 mi
Elsewhere in California
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