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05:53
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17:53
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13:42
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00:40
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View stargazing scoreWeather in San Marcos tomorrow, September 21, 2026
Rain features in San Marcos on September 21, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. The morning carries the wetter risk, with rain chances near 80% and the highest odds around 00:00. Cloud is also thick early on, peaking near 97% around 07:00.
Expect highs of 32°C and cooler readings close to 24°C. Expect humidity between 65% and 100%, most humid near 04:00. A lighter breeze peaks around 16:00 near 4.6 km/h.
The second half of the day still looks unsettled, with rain probability around 60% by 12:00. Dense cloud near 96% at 16:00 keeps the feel grey. Expect visibility near 15.6 km, with poorer spells close to 7.8 km. Expect sunrise at 05:52, sunset at 17:52, and 11 hours 59 minutes of sunlight today overall.
In short, treat September 21, 2026 in San Marcos as a damp day: pack covers, watch the wetter hours, and expect a high near 32°C.
Frequently asked questions about weather in San Marcos
How warm does it get in San Marcos?
The warmest month in San Marcos is February, with average high temperatures of 36°C. The average temperature during this period is around 30°C.
How cold does it get in San Marcos?
The coldest month in San Marcos is November, with average low temperatures of 25°C. The average temperature during this period is around 28°C.
What is the wettest time of year in San Marcos?
The wettest month in San Marcos is May, with an average of 262mm of precipitation.
What is the driest time of year in San Marcos?
The driest month in San Marcos is February, with an average of 13mm of precipitation.
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