Currently: 83 °F. Sunny. (Weather station: San Marcos Municipal Airport, USA). See more current weatherPast Weather in San Marcos — Graph
San Marcos Temperature Yesterday
Maximum temperature yesterday: 90 °F (at 4:56 pm)
Minimum temperature yesterday: 53 °F (at 7:56 am)
Average temperature yesterday: 71 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 98 °F (Mar 15, 4:56 pm) | 100% (Mar 9, 2:56 am) | 30.45 "Hg (Mar 9, 2:56 am) |
| Low | 28 °F (Mar 17, 4:56 am) | 11% (Mar 15, 5:56 pm) | 29.56 "Hg (Mar 15, 4:56 pm) |
| Average | 65 °F | 63% | 30.04 "Hg |
| * Reported Mar 6 10:26 am — Mar 21 11:56 am, San Marcos. Weather by CustomWeather, © 2026 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
San Marcos Weather History for the Previous 24 Hours
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| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 11:56 am Sat, Mar 21 | | 79 °F | Sunny. | 14 mph | ↑ | 54% | 30.03 "Hg | 10 mi |
| 10:56 am | | 74 °F | Sunny. | 13 mph | ↑ | 62% | 30.03 "Hg | 10 mi |
| 9:56 am | | 69 °F | Sunny. | 10 mph | ↑ | 73% | 30.03 "Hg | 10 mi |
| 8:56 am | | 61 °F | Sunny. | 8 mph | ↑ | 90% | 30.01 "Hg | 10 mi |
| 7:56 am | | 57 °F | Sunny. | 7 mph | ↑ | 96% | 30.00 "Hg | 10 mi |
| 6:56 am |  | 56 °F | Clear. | 7 mph | ↑ | 97% | 29.99 "Hg | 10 mi |
| 5:56 am | | 57 °F | Clear. | 7 mph | ↑ | 96% | 29.98 "Hg | 10 mi |
| 4:56 am | | 58 °F | Clear. | 6 mph | ↑ | 93% | 29.98 "Hg | 10 mi |
| 3:56 am | | 60 °F | Clear. | 7 mph | ↑ | 90% | 29.99 "Hg | 10 mi |
| 2:56 am | | 61 °F | Clear. | 8 mph | ↑ | 87% | 30.01 "Hg | 10 mi |
| 1:56 am | | 63 °F | Clear. | 9 mph | ↑ | 84% | 30.02 "Hg | 10 mi |
| 12:56 am | | 65 °F | Clear. | 8 mph | ↑ | 78% | 30.03 "Hg | 10 mi |
| 11:56 pm Fri, Mar 20 | | 67 °F | Clear. | 7 mph | ↑ | 76% | 30.05 "Hg | 10 mi |
| 10:56 pm | | 71 °F | Clear. | 13 mph | ↑ | 63% | 30.04 "Hg | 10 mi |
| 9:56 pm | | 75 °F | Clear. | 20 mph | ↑ | 55% | 30.02 "Hg | 10 mi |
| 8:56 pm | | 79 °F | Clear. | 14 mph | ↑ | 36% | 30.00 "Hg | 10 mi |
| 7:56 pm | | 83 °F | Clear. | 10 mph | ↑ | 31% | 29.99 "Hg | 10 mi |
| 6:56 pm | | 87 °F | Sunny. | 16 mph | ↑ | 27% | 29.98 "Hg | 10 mi |
| 5:56 pm | | 89 °F | Sunny. | 14 mph | ↑ | 27% | 29.98 "Hg | 10 mi |
| 4:56 pm | | 90 °F | Sunny. | 14 mph | ↑ | 25% | 30.00 "Hg | 10 mi |
| 3:56 pm | | 89 °F | Sunny. | 14 mph | ↑ | 28% | 30.02 "Hg | 10 mi |
| 2:56 pm | | 88 °F | Sunny. | 18 mph | ↑ | 33% | 30.04 "Hg | 10 mi |
| 1:56 pm | | 85 °F | Sunny. | 15 mph | ↑ | 37% | 30.08 "Hg | 10 mi |
| Weather by CustomWeather, © 2026 | ||||||||