 |
 Current San Marcos Weather Conditions |
Updated September 19th at 8:56 am |
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| Temperature: | 79°F |
Dew Point: | 70°F |
| Barometer: | 30.06 inHg |
Wind: | calm |
| Humidity: | 74.0% |
Visibility: | 0M |
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| San Marcos Weather Forecast Summary |
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Today
Sep 19th
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Saturday
Sep 20th
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Sunday
Sep 21st
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Monday
Sep 22nd
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Tuesday
Sep 23rd
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Mostly Sunny |
Cloudy |
Cloudy |
Mix of Cloud and Sun |
Cloudy |
98°F
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98°F
71°F |
96°F
72°F |
101°F
72°F |
102°F
72°F |
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| San Marcos Detailed Weather Forecast |
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| Friday, September 19th, 2025 |
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Morning |
Temperature: 88°F |
| Sunny. Chance of a thunderstorm. |
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Afternoon |
Temperature: 95°F |
| A mix of cloud and sun. Windy at times. |
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Evening |
Temperature: 78°F |
| Clear with cloudy periods. Chance of a thunderstorm. Windy at times. |
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| Saturday, September 20th, 2025 |
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Overnight |
Temperature: 72°F |
| A mix of cloudy and clear skies. Chance of a thunderstorm. |
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Morning |
Temperature: 88°F |
| Sunny. Slight chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 95°F |
| A mix of cloud and sun. Windy at times. |
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Evening |
Temperature: 78°F |
| Cloudy. Slight chance of a thunderstorm. Windy at times. |
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| Sunday, September 21st, 2025 |
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Overnight |
Temperature: 72°F |
| Clear. Slight chance of a thunderstorm. |
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Morning |
Temperature: 89°F |
| Sunny with cloudy periods. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 92°F |
| Cloudy. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 79°F |
| Clear. Slight chance of a thunderstorm. Windy at times. |
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| Monday, September 22nd, 2025 |
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Overnight |
Temperature: 73°F |
| Clear with cloudy periods. Slight chance of a thunderstorm. |
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Morning |
Temperature: 90°F |
| A mix of cloud and sun. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 97°F |
| A mix of cloud and sun. Windy at times. |
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Evening |
Temperature: 78°F |
| Clear with cloudy periods. Slight chance of a thunderstorm. Windy at times. |
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| Tuesday, September 23rd, 2025 |
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Overnight |
Temperature: 73°F |
| Clear with cloudy periods. Slight chance of a thunderstorm. |
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Morning |
Temperature: 90°F |
| A mix of sun and cloud. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 99°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 79°F |
| Clear. Slight chance of a thunderstorm. Windy at times. |
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| Wednesday, September 24th, 2025 |
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Overnight |
Temperature: 74°F |
| Clear with cloudy periods. Chance of a thunderstorm. |
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Morning |
Temperature: 91°F |
| Sunny. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 98°F |
| Cloudy. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 83°F |
| A mix of cloudy and clear skies. Chance of a thunderstorm. Windy at times. |
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| Thursday, September 25th, 2025 |
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Overnight |
Temperature: 75°F |
| Clear with cloudy periods. Chance of a thunderstorm. Windy at times. |
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Morning |
Temperature: 92°F |
| A mix of cloud and sun. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 99°F |
| Cloudy. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 81°F |
| A mix of cloudy and clear skies. Chance of a thunderstorm. Windy at times. |
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| Friday, September 26th, 2025 |
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Overnight |
Temperature: 75°F |
| Cloudy. Chance of a thunderstorm. |
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Morning |
Temperature: 92°F |
| A mix of cloud and sun. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 98°F |
| A mix of cloud and sun. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 81°F |
| A mix of cloudy and clear skies. Chance of a thunderstorm. Windy. |
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| Saturday, September 27th, 2025 |
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Overnight |
Temperature: 78°F |
| A mix of cloudy and clear skies. Chance of a thunderstorm. Windy at times. |
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Morning |
Temperature: 92°F |
| A mix of cloud and sun. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 89°F |
| Cloudy with showers likely. Chance of a thunderstorm. Wind 20 to 30 mph. |
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Evening |
Temperature: 77°F |
| Cloudy with showers likely. Windy at times. |
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