Currently: 89 °F. Partly sunny. (Weather station: San Antonio International Airport, USA). See more current weatherMay 2018 Weather in San Antonio — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
56
60
64
68
72
76
80
84
88
92
96
100
Tue, May 1
Lo:70
12 am
Hi:72
12
Lo:70
6 am
Hi:73
12
Lo:75
12 pm
Hi:84
16
Lo:73
6 pm
Hi:79
18
Wed, May 2
Lo:72
12 am
Hi:73
11
Lo:73
6 am
Hi:81
12
Lo:82
12 pm
Hi:88
17
Lo:75
6 pm
Hi:82
18
Thu, May 3
Lo:75
12 am
Hi:77
15
Lo:73
6 am
Hi:81
11
Lo:82
12 pm
Hi:90
9
Lo:75
6 pm
Hi:84
16
Fri, May 4
Lo:73
12 am
Hi:75
11
Lo:64
6 am
Hi:75
15
Lo:64
12 pm
Hi:66
9
Lo:64
6 pm
Hi:66
7
Sat, May 5
Lo:64
12 am
Hi:66
6
Lo:63
6 am
Hi:79
9
Lo:81
12 pm
Hi:84
9
Lo:68
6 pm
Hi:82
4
Sun, May 6
Lo:57
12 am
Hi:64
5
Lo:57
6 am
Hi:81
4
Lo:82
12 pm
Hi:90
4
Lo:72
6 pm
Hi:86
5
Mon, May 7
Lo:59
12 am
Hi:66
4
Lo:61
6 am
Hi:82
2
Lo:84
12 pm
Hi:90
6
Lo:73
6 pm
Hi:88
9
Tue, May 8
Lo:64
12 am
Hi:72
6
Lo:64
6 am
Hi:81
10
Lo:82
12 pm
Hi:90
14
Lo:73
6 pm
Hi:88
14
Wed, May 9
Lo:66
12 am
Hi:66
7
Lo:64
6 am
Hi:77
9
Lo:84
12 pm
Hi:88
12
Lo:73
6 pm
Hi:86
17
Thu, May 10
Lo:68
12 am
Hi:70
11
Lo:68
6 am
Hi:79
11
Lo:84
12 pm
Hi:90
16
Lo:72
6 pm
Hi:88
16
Fri, May 11
Lo:72
12 am
Hi:72
12
Lo:70
6 am
Hi:82
14
Lo:84
12 pm
Hi:90
15
Lo:73
6 pm
Hi:84
17
Sat, May 12
Lo:70
12 am
Hi:72
12
Lo:72
6 am
Hi:84
12
Lo:84
12 pm
Hi:93
14
Lo:75
6 pm
Hi:90
17
Sun, May 13
Lo:73
12 am
Hi:75
11
Lo:73
6 am
Hi:82
11
Lo:84
12 pm
Hi:91
10
Lo:75
6 pm
Hi:90
18
Mon, May 14
Lo:75
12 am
Hi:75
12
Lo:75
6 am
Hi:82
10
Lo:84
12 pm
Hi:90
14
Lo:77
6 pm
Hi:88
14
Tue, May 15
Lo:73
12 am
Hi:73
9
Lo:73
6 am
Hi:84
7
Lo:84
12 pm
Hi:90
10
Lo:72
6 pm
Hi:86
9
Wed, May 16
Lo:68
12 am
Hi:73
6
Lo:66
6 am
Hi:84
6
Lo:88
12 pm
Hi:93
5
Lo:82
6 pm
Hi:91
9
Thu, May 17
Lo:72
12 am
Hi:79
5
Lo:73
6 am
Hi:88
6
Lo:91
12 pm
Hi:97
11
Lo:79
6 pm
Hi:93
11
Fri, May 18
Lo:70
12 am
Hi:75
8
Lo:70
6 am
Hi:84
10
Lo:90
12 pm
Hi:97
16
Lo:73
6 pm
Hi:91
19
Sat, May 19
Lo:72
12 am
Hi:75
12
Lo:72
6 am
Hi:82
16
Lo:88
12 pm
Hi:93
22
Lo:77
6 pm
Hi:88
19
Sun, May 20
Lo:75
12 am
Hi:77
15
Lo:75
6 am
Hi:82
10
Lo:70
12 pm
Hi:84
12
Lo:70
6 pm
Hi:72
10
Mon, May 21
Lo:68
12 am
Hi:70
4
Lo:68
6 am
Hi:77
6
Lo:81
12 pm
Hi:90
6
Lo:72
6 pm
Hi:86
11
Tue, May 22
Lo:72
12 am
Hi:72
5
Lo:72
6 am
Hi:84
9
Lo:84
12 pm
Hi:91
12
Lo:75
6 pm
Hi:86
12
Wed, May 23
Lo:73
12 am
Hi:75
9
Lo:73
6 am
Hi:84
8
Lo:84
12 pm
Hi:91
7
Lo:75
6 pm
Hi:84
12
Thu, May 24
Lo:72
12 am
Hi:75
7
Lo:73
6 am
Hi:82
7
Lo:84
12 pm
Hi:93
6
Lo:81
6 pm
Hi:91
11
Fri, May 25
Lo:73
12 am
Hi:79
9
Lo:75
6 am
Hi:84
7
Lo:90
12 pm
Hi:93
7
Lo:81
6 pm
Hi:91
9
Sat, May 26
Lo:72
12 am
Hi:81
6
Lo:73
6 am
Hi:88
7
Lo:91
12 pm
Hi:97
7
Lo:82
6 pm
Hi:95
11
Sun, May 27
Lo:73
12 am
Hi:81
7
Lo:73
6 am
Hi:90
7
Lo:91
12 pm
Hi:97
12
Lo:82
6 pm
Hi:93
11
Mon, May 28
Lo:73
12 am
Hi:81
7
Lo:73
6 am
Hi:90
4
Lo:91
12 pm
Hi:95
8
Lo:82
6 pm
Hi:93
11
Tue, May 29
Lo:73
12 am
Hi:81
7
Lo:73
6 am
Hi:88
7
Lo:90
12 pm
Hi:97
10
Lo:81
6 pm
Hi:93
16
Wed, May 30
Lo:73
12 am
Hi:79
8
Lo:73
6 am
Hi:88
12
Lo:91
12 pm
Hi:97
16
Lo:79
6 pm
Hi:93
18
Thu, May 31
Lo:75
12 am
Hi:77
12
Lo:75
6 am
Hi:88
11
Lo:91
12 pm
Hi:99
14
Lo:79
6 pm
Hi:97
18
Tuesday, May 1, 2018, 12:00 am — 6:00 am
72 / 70 °F
Low clouds.
Humidity: 85%
Barometer: 29.9 "Hg
SE
Wind: 12.428 mph
High & Low Weather Summary for May 2018
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 99 °F (May 31, 4:51 pm) | 94% (May 2, 5:51 am) | 30.16 "Hg (May 2, 5:51 am) |
| Low | 57 °F (May 6, 6:51 am) | 22% (May 6, 4:51 pm) | 29.64 "Hg (May 29, 6:51 pm) |
| Average | 79 °F | 65% | 29.90 "Hg |
| * Reported May 1 12:51 am — May 31 11:51 pm, San Antonio. 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 Antonio Weather History for May 1, 2018
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 12:51 am Tue, May 1 |  | 71 °F | Overcast. | 14 mph | ↑ | 81% | 29.92 "Hg | 10 mi |
| 1:51 am | | 71 °F | Mostly cloudy. | 14 mph | ↑ | 81% | 29.91 "Hg | 10 mi |
| 2:51 am | | 70 °F | Mostly cloudy. | 14 mph | ↑ | 87% | 29.90 "Hg | 10 mi |
| 3:51 am | | 70 °F | Mostly cloudy. | 13 mph | ↑ | 87% | 29.88 "Hg | 10 mi |
| 4:51 am | | 70 °F | Overcast. | 9 mph | ↑ | 87% | 29.88 "Hg | 10 mi |
| 5:04 am | | 70 °F | Low clouds. | 13 mph | ↑ | 87% | 29.92 "Hg | 10 mi |
| 5:51 am | | 70 °F | Low clouds. | 10 mph | ↑ | 87% | 29.87 "Hg | 10 mi |
| 6:51 am |  | 70 °F | Low clouds. | 12 mph | ↑ | 90% | 29.88 "Hg | 10 mi |
| 7:51 am |  | 71 °F | Fog. | 13 mph | ↑ | 90% | 29.89 "Hg | 6 mi |
| 8:51 am | | 72 °F | Low clouds. | 12 mph | ↑ | 87% | 29.91 "Hg | 7 mi |
| 9:51 am |  | 72 °F | Light rain. Fog. | 10 mph | ↑ | 91% | 29.93 "Hg | 5 mi |
| 10:51 am | | 73 °F | Low clouds. | 12 mph | ↑ | 88% | 29.93 "Hg | 8 mi |
| 11:51 am | | 74 °F | Light rain. Low clouds. | 12 mph | ↑ | 85% | 29.92 "Hg | 10 mi |
| 12:38 pm | | 75 °F | Overcast. | 14 mph | ↑ | 85% | 29.96 "Hg | 9 mi |
| 12:51 pm | | 75 °F | Light rain. Overcast. | 14 mph | ↑ | 85% | 29.91 "Hg | 10 mi |
| 1:51 pm | | 79 °F | Broken clouds. | 16 mph | ↑ | 77% | 29.88 "Hg | 10 mi |
| 2:51 pm | | 84 °F | Broken clouds. | 20 mph | ↑ | 65% | 29.86 "Hg | 10 mi |
| 3:51 pm | | 84 °F | Cloudy. | 15 mph | ↑ | 63% | 29.84 "Hg | 10 mi |
| 4:51 pm | | 80 °F | Cloudy. | 15 mph | ↑ | 71% | 29.85 "Hg | 10 mi |
| 5:51 pm | | 80 °F | More clouds than sun. | 17 mph | ↑ | 71% | 29.83 "Hg | 10 mi |
| 6:51 pm | | 79 °F | Mostly cloudy. | 18 mph | ↑ | 72% | 29.84 "Hg | 10 mi |
| 7:51 pm | | 77 °F | Cloudy. | 21 mph | ↑ | 77% | 29.84 "Hg | 10 mi |
| 8:51 pm | | 76 °F | Overcast. | 15 mph | ↑ | 80% | 29.87 "Hg | 10 mi |
| 9:51 pm | | 76 °F | Overcast. | 15 mph | ↑ | 80% | 29.89 "Hg | 10 mi |
| 10:51 pm |  | 75 °F | Light rain. Overcast. | 24 mph | ↑ | 82% | 29.92 "Hg | 10 mi |
| 11:51 pm | | 74 °F | Light rain. Fog. | 15 mph | ↑ | 88% | 29.93 "Hg | 6 mi |
| Weather by CustomWeather, © 2025 | ||||||||