| Wed May 22 | Thu May 23 | Fri May 24 | Sat May 25 | |
| Tmin 18-06 |
16°C | 15°C | 15°C | 15°C |
| Tmax 06-18 |
20°C | 20°C | 20°C | 20°C |
| morning 24-06 |
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| a.m. 06-12 |
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| p.m. 12-18 |
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| evening 18-24 |
| Nearby Forecast Locations - San Marcos | Distance |
| Vista | 8.8 km |
| Escondido | 11.5 km |
| McClellan-Palomar Airport | 12.6 km |
| Encinitas | 13.2 km |
| Oceanside | 13.6 km |
| Rancho Santa Fe | 13.8 km |
| Cardiff-by-the-Sea | 15.6 km |
| Solana Beach | 17.5 km |
| Valley Center | 18.4 km |
| Del Mar | 19.6 km |
| Poway | 21.5 km |
| Oceanside | 21.7 km |
| Ramona | 23.7 km |
| Jofegan | 27.6 km |
| Fallbrook | 28.5 km |
| Miramar | 29.8 km |
| Forecast: San Marcos Region Scattered clouds and sunny spells; both will be present in the coming days. An umbrella won't be needed today. The daily high temperature near 20 degrees. |