Currently: 59 °F. Cloudy. (Weather station: San Marcos Municipal Airport, USA). See more current weatherPast Weather in San Marcos — Graph
San Marcos Temperature Yesterday
Maximum temperature yesterday: 61 °F (at 5:56 pm)
Minimum temperature yesterday: 41 °F (at 6:56 am)
Average temperature yesterday: 52 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 83 °F (Jan 6, 3:56 pm) | 100% (Jan 21, 7:56 am) | 30.61 "Hg (Jan 21, 7:56 am) |
| Low | 26 °F (Jan 18, 3:56 am) | 14% (Jan 18, 2:56 pm) | 29.73 "Hg (Jan 8, 2:56 pm) |
| Average | 55 °F | 51% | 30.17 "Hg |
| * Reported Jan 6 7:56 am — Jan 21 7:56 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 | ||
| 7:56 am Wed, Jan 21 | | 57 °F | Cloudy. | 5 mph | ↑ | 100% | 30.13 "Hg | 10 mi |
| 7:20 am |  | 57 °F | Mostly cloudy. | 5 mph | ↑ | 94% | 30.14 "Hg | 10 mi |
| 6:56 am | | 57 °F | Mostly cloudy. | No wind | ↑ | 96% | 30.14 "Hg | 10 mi |
| 6:40 am | | 57 °F | Overcast. | No wind | ↑ | 94% | 30.15 "Hg | 10 mi |
| 5:56 am | | 58 °F | Low clouds. | No wind | ↑ | 93% | 30.14 "Hg | 10 mi |
| 4:56 am | | 59 °F | Low clouds. | No wind | ↑ | 87% | 30.13 "Hg | 10 mi |
| 3:56 am | | 59 °F | Low clouds. | 6 mph | ↑ | 87% | 30.13 "Hg | 10 mi |
| 2:56 am | | 59 °F | Low clouds. | 6 mph | ↑ | 81% | 30.13 "Hg | 10 mi |
| 1:56 am | | 58 °F | Overcast. | 7 mph | ↑ | 78% | 30.15 "Hg | 10 mi |
| 1:08 am | | 57 °F | Overcast. | 6 mph | ↑ | 77% | 30.17 "Hg | 10 mi |
| 12:56 am | | 58 °F | Overcast. | 6 mph | ↑ | 75% | 30.17 "Hg | 10 mi |
| 10:56 pm Tue, Jan 20 | | 58 °F | Overcast. | 9 mph | ↑ | 75% | 30.21 "Hg | 10 mi |
| 9:56 pm | | 58 °F | Overcast. | 12 mph | ↑ | 75% | 30.22 "Hg | 10 mi |
| 8:56 pm | | 58 °F | Overcast. | 13 mph | ↑ | 78% | 30.23 "Hg | 10 mi |
| 7:56 pm | | 59 °F | Overcast. | 15 mph | ↑ | 81% | 30.23 "Hg | 10 mi |
| 6:56 pm | | 61 °F | Overcast. | 15 mph | ↑ | 67% | 30.23 "Hg | 10 mi |
| 6:34 pm | | 61 °F | Mostly cloudy. | 3 mph | ↑ | 48% | 30.23 "Hg | 10 mi |
| 5:56 pm |  | 61 °F | Mostly cloudy. | 5 mph | ↑ | 48% | 30.23 "Hg | 10 mi |
| 4:56 pm | | 60 °F | Overcast. | 3 mph | ↑ | 46% | 30.24 "Hg | 10 mi |
| 3:56 pm | | 59 °F | Mostly cloudy. | 5 mph | ↑ | 46% | 30.26 "Hg | 10 mi |
| 2:56 pm | | 58 °F | Overcast. | 6 mph | ↑ | 46% | 30.28 "Hg | 10 mi |
| 2:19 pm | | 57 °F | More clouds than sun. | 8 mph | ↑ | 48% | 30.30 "Hg | 10 mi |
| 1:56 pm | | 57 °F | Mostly cloudy. | 6 mph | ↑ | 46% | 30.31 "Hg | 10 mi |
| 1:17 pm | | 55 °F | Mostly cloudy. | 5 mph | ↑ | 47% | 30.34 "Hg | 10 mi |
| 12:56 pm | | 56 °F | Overcast. | 8 mph | ↑ | 42% | 30.34 "Hg | 10 mi |
| 11:56 am | | 55 °F | Partly sunny. | 9 mph | ↑ | 34% | 30.39 "Hg | 10 mi |
| 10:56 am | | 50 °F | Overcast. | 9 mph | ↑ | 32% | 30.42 "Hg | 10 mi |
| 9:56 am | | 46 °F | Broken clouds. | 13 mph | ↑ | 31% | 30.43 "Hg | 10 mi |
| 9:31 am | | 45 °F | More clouds than sun. | 12 mph | ↑ | 34% | 30.43 "Hg | 10 mi |
| Weather by CustomWeather, © 2026 | ||||||||