I-5 weather conditions near San Ysidro, California
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Clear 86°F 2025-09-16T15:30:00 
Tonight 2025-09-16, Mostly Cloudy. Mostly cloudy, with a low around 69. West wind around 5 mph becoming calm in the evening.
Wednesday 2025-09-17, Chance Showers. A chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 80. West wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night 2025-09-17, Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Thursday 2025-09-18, Showers Likely. Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 77. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night 2025-09-18, Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday 2025-09-19, Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Chance of precipitation is 20%.
Friday Night 2025-09-19, Patchy Fog. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 68.
Saturday 2025-09-20, Partly Sunny. Partly sunny, with a high near 76.- Saturday Night 2025-09-20, Mostly Cloudy. Mostly cloudy, with a low around 68.
- Sunday 2025-09-21, Partly Sunny. Partly sunny, with a high near 79.
- Sunday Night 2025-09-21, Mostly Cloudy. Mostly cloudy, with a low around 69.
- Monday 2025-09-22, Partly Sunny. Partly sunny, with a high near 79.
- Monday Night 2025-09-22, Mostly Cloudy. Mostly cloudy, with a low around 69.
- Tuesday 2025-09-23, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 78.