Currently: 96 °F. Partly sunny. (Weather station: San Marcos Municipal Airport, USA). See more current weatherPast Weather in San Marcos — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
61
65
69
73
77
81
85
89
93
97
101
Tue, Jul 29
Lo:95
12 pm
Hi:99
9
Lo:73
6 pm
Hi:99
5
Wed, Jul 30
Lo:64
12 am
Hi:75
2
Lo:63
6 am
Hi:97
4
Lo:97
12 pm
Hi:100
6
Lo:75
6 pm
Hi:99
5
Thu, Jul 31
Lo:66
12 am
Hi:79
1
Lo:66
6 am
Hi:97
2
Lo:97
12 pm
Hi:100
7
Lo:82
6 pm
Hi:100
8
Fri, Aug 1
Lo:75
12 am
Hi:82
6
Lo:75
6 am
Hi:97
7
Lo:97
12 pm
Hi:100
9
Lo:81
6 pm
Hi:99
6
Sat, Aug 2
Lo:77
12 am
Hi:81
5
Lo:75
6 am
Hi:95
4
Lo:82
12 pm
Hi:102
7
Lo:75
6 pm
Hi:84
6
Sun, Aug 3
Lo:72
12 am
Hi:75
2
Lo:72
6 am
Hi:93
3
Lo:93
12 pm
Hi:100
5
Lo:84
6 pm
Hi:99
7
Mon, Aug 4
Lo:73
12 am
Hi:84
4
Lo:73
6 am
Hi:88
7
Lo:86
12 pm
Hi:91
12
Lo:75
6 pm
Hi:90
4
Tue, Aug 5
Lo:70
12 am
Hi:75
2
Lo:70
6 am
Hi:91
4
Lo:91
12 pm
Hi:99
9
Lo:81
6 pm
Hi:97
9
Wed, Aug 6
Lo:72
12 am
Hi:81
4
Lo:72
6 am
Hi:91
6
Lo:91
12 pm
Hi:99
4
Lo:84
6 pm
Hi:99
10
Thu, Aug 7
Lo:75
12 am
Hi:84
6
Lo:73
6 am
Hi:91
7
Lo:91
12 pm
Hi:99
12
Lo:82
6 pm
Hi:99
8
Fri, Aug 8
Lo:73
12 am
Hi:82
5
Lo:75
6 am
Hi:93
10
Lo:93
12 pm
Hi:99
10
Lo:84
6 pm
Hi:99
9
Sat, Aug 9
Lo:77
12 am
Hi:84
5
Lo:75
6 am
Hi:93
7
Lo:93
12 pm
Hi:100
9
Lo:82
6 pm
Hi:100
11
Sun, Aug 10
Lo:75
12 am
Hi:82
4
Lo:73
6 am
Hi:91
5
Lo:91
12 pm
Hi:100
8
Lo:82
6 pm
Hi:99
10
Mon, Aug 11
Lo:75
12 am
Hi:82
4
Lo:73
6 am
Hi:93
3
Lo:93
12 pm
Hi:99
6
Lo:84
6 pm
Hi:99
10
Tue, Aug 12
Lo:75
12 am
Hi:84
6
Lo:75
6 am
Hi:93
4
Lo:90
12 pm
Hi:99
7
Lo:84
6 pm
Hi:91
7
Wed, Aug 13
Lo:75
12 am
Hi:84
4
Lo:75
6 am
Hi:93
6
Lo:93
12 pm
Hi:99
4
Tuesday, July 29, 2025, 12:00 pm — 6:00 pm
99 / 95 °F
Sunny.
Humidity: 24%
Barometer: 30.09 "Hg
ESE
Wind: 8.7 mph
San Marcos Temperature Yesterday
Maximum temperature yesterday: 98 °F (at 2:56 pm)
Minimum temperature yesterday: 76 °F (at 5:56 am)
Average temperature yesterday: 87 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 102 °F (Aug 2, 2:56 pm) | 100% (Aug 6, 5:56 am) | 30.21 "Hg (Aug 6, 5:56 am) |
| Low | 62 °F (Jul 30, 6:56 am) | 20% (Jul 29, 2:56 pm) | 29.85 "Hg (Aug 3, 6:56 pm) |
| Average | 86 °F | 62% | 30.01 "Hg |
| * Reported Jul 29 12:56 pm — Aug 13 12:56 pm, San Marcos. Weather by CustomWeather, © 2025 | |||
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
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 12:56 pm Wed, Aug 13 |  | 98 °F | Scattered clouds. | 8 mph | ↑ | 43% | 29.96 "Hg | 10 mi |
| 11:56 am | | 94 °F | Passing clouds. | No wind | ↑ | 51% | 29.97 "Hg | 10 mi |
| 10:56 am | | 92 °F | Scattered clouds. | 7 mph | ↑ | 56% | 29.98 "Hg | 10 mi |
| 9:56 am | | 88 °F | Scattered clouds. | 10 mph | ↑ | 67% | 29.98 "Hg | 10 mi |
| 8:56 am | | 84 °F | Scattered clouds. | 13 mph | ↑ | 77% | 29.96 "Hg | 10 mi |
| 7:56 am |  | 79 °F | Sunny. | 6 mph | ↑ | 88% | 29.96 "Hg | 10 mi |
| 6:56 am |  | 76 °F | Clear. | 5 mph | ↑ | 88% | 29.96 "Hg | 10 mi |
| 5:56 am | | 76 °F | Clear. | 5 mph | ↑ | 88% | 29.95 "Hg | 10 mi |
| 4:56 am | | 78 °F | Clear. | 6 mph | ↑ | 79% | 29.95 "Hg | 10 mi |
| 3:56 am | | 78 °F | Clear. | No wind | ↑ | 76% | 29.94 "Hg | 10 mi |
| 2:56 am | | 80 °F | Clear. | 5 mph | ↑ | 74% | 29.94 "Hg | 10 mi |
| 1:56 am | | 79 °F | Clear. | 5 mph | ↑ | 74% | 29.95 "Hg | 10 mi |
| 12:56 am | | 81 °F | Clear. | 3 mph | ↑ | 65% | 29.95 "Hg | 10 mi |
| 12:15 am | | 82 °F | Clear. | No wind | ↑ | 66% | 29.98 "Hg | 3 mi |
| 12:07 am | | 82 °F | Clear. | 8 mph | ↑ | 66% | 29.97 "Hg | 2 mi |
| 11:56 pm Tue, Aug 12 | | 84 °F | Clear. | 8 mph | ↑ | 61% | 29.94 "Hg | 4 mi |
| 10:56 pm |  | 86 °F | Passing clouds. | 7 mph | ↑ | 57% | 29.93 "Hg | 10 mi |
| 9:56 pm |  | 88 °F | Partly cloudy. | 13 mph | ↑ | 52% | 29.91 "Hg | 10 mi |
| 8:56 pm | | 87 °F | Clear. | 6 mph | ↑ | 59% | 29.90 "Hg | 10 mi |
| 7:56 pm | | 90 °F | Sunny. | 6 mph | ↑ | 52% | 29.89 "Hg | 10 mi |
| 6:56 pm | | 91 °F | Sunny. | 7 mph | ↑ | 52% | 29.87 "Hg | 10 mi |
| 5:56 pm | | 89 °F | Sunny. | 8 mph | ↑ | 57% | 29.86 "Hg | 10 mi |
| 4:56 pm | | 90 °F | Sunny. | 7 mph | ↑ | 56% | 29.88 "Hg | 10 mi |
| 3:56 pm |  | 91 °F | Overcast. | 8 mph | ↑ | 49% | 29.89 "Hg | 10 mi |
| 3:09 pm |  | 97 °F | Thundershowers. Partly sunny. | 9 mph | ↑ | 37% | 29.92 "Hg | 10 mi |
| 2:56 pm | | 98 °F | Broken clouds. | 7 mph | ↑ | 38% | 29.90 "Hg | 10 mi |
| Weather by CustomWeather, © 2025 | ||||||||