San Antonio, TX Hourly Forecast
San Antonio temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 4 PM - around 99°
- Coolest hour: 7 AM - around 76°
- Rain risk: low all day (peaks at 18%)
- UV peak: 2 PM at index 10 - sun protection recommended
- Windiest: 9 PM at 14 mph
San Antonio hourly weather - Tuesday, August 18
In San Antonio, expect a high near 99°F (37°C) around 4 PM and a low of 78°F (26°C) near 8 AM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 8 AM | Sunny | 78° | 85° | 14% | 4 mph SSW | 89% | 0 | |
| 9 AM | Sunny | 81° | 87° | 11% | 4 mph SSW | 82% | 1 | |
| 10 AM | Sunny | 84° | 91° | 6% | 4 mph SSW | 70% | 3 | |
| 11 AM | Sunny | 93° | 108° | 4% | 4 mph SSE | 62% | 6 | |
| 12 PM | Sunny | 97° | 111° | 2% | 5 mph SSE | 52% | 8 | |
| 1 PM | Sunny | 94° | 94° | 1% | 6 mph SSE | 32% | 10 | |
| 2 PM | Overcast | 97° | 96° | 9% | 7 mph SSE | 28% | 10 | |
| 3 PM | Overcast | 98° | 96° | 9% | 9 mph SSE | 26% | 9 | |
| 4 PM | Overcast | 99° | 96° | 8% | 10 mph SSE | 25% | 6 | |
| 5 PM | Cloudy | 99° | 96° | 6% | 9 mph SSE | 24% | 4 | |
| 6 PM | Partly Cloudy | 99° | 96° | 4% | 8 mph SSE | 24% | 1 | |
| 7 PM | Partly Cloudy | 98° | 95° | 2% | 8 mph SSE | 25% | 0 | |
| 8 PM | Overcast | 95° | 94° | 8% | 6 mph S | 28% | 0 | |
| 9 PM | Overcast | 90° | 86° | 8% | 14 mph SSE | 34% | 0 | |
| 10 PM | Overcast | 86° | 86° | 10% | 13 mph SSE | 43% | 0 | |
| 11 PM | Cloudy | 84° | 84° | 6% | 11 mph S | 48% | 0 |
San Antonio hourly weather - Wednesday, August 19
In San Antonio, expect a high near 101°F (38°C) around 5 PM and a low of 76°F (24°C) near 7 AM; precipitation risk peaks at 18% around 7 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Overcast | 82° | 83° | 12% | 9 mph S | 54% | 0 | |
| 1 AM | Cloudy | 81° | 82° | 8% | 7 mph SSE | 56% | 0 | |
| 2 AM | Overcast | 79° | 80° | 12% | 6 mph SSE | 55% | 0 | |
| 3 AM | Overcast | 78° | 79° | 14% | 6 mph S | 59% | 0 | |
| 4 AM | Overcast | 77° | 78° | 15% | 7 mph S | 63% | 0 | |
| 5 AM | Overcast | 76° | 78° | 16% | 7 mph SSW | 67% | 0 | |
| 6 AM | Overcast | 76° | 78° | 17% | 7 mph SSW | 68% | 0 | |
| 7 AM | Overcast | 76° | 77° | 18% | 6 mph SSW | 69% | 0 | |
| 8 AM | Overcast | 76° | 78° | 17% | 7 mph SSW | 68% | 0 | |
| 9 AM | Overcast | 78° | 79° | 15% | 8 mph SSW | 62% | 1 | |
| 10 AM | Overcast | 82° | 83° | 13% | 9 mph SSW | 54% | 3 | |
| 11 AM | Overcast | 86° | 86° | 10% | 9 mph SSW | 42% | 6 | |
| 12 PM | Overcast | 90° | 88° | 9% | 8 mph SSW | 35% | 8 | |
| 1 PM | Overcast | 93° | 90° | 9% | 8 mph S | 30% | 10 | |
| 2 PM | Cloudy | 96° | 93° | 6% | 7 mph S | 26% | 10 | |
| 3 PM | Sunny | 98° | 95° | 1% | 8 mph SSE | 22% | 9 | |
| 4 PM | Sunny | 100° | 95° | 0% | 9 mph SSE | 19% | 6 | |
| 5 PM | Sunny | 101° | 95° | 0% | 10 mph SSE | 18% | 4 | |
| 6 PM | Sunny | 100° | 95° | 0% | 9 mph SSE | 18% | 2 | |
| 7 PM | Sunny | 99° | 94° | 0% | 9 mph SSE | 19% | 0 | |
| 8 PM | Sunny | 97° | 93° | 0% | 7 mph SE | 22% | 0 | |
| 9 PM | Clear | 95° | 91° | 0% | 9 mph SE | 25% | 0 | |
| 10 PM | Clear | 85° | 86° | 2% | 16 mph SSE | 49% | 0 | |
| 11 PM | Clear | 82° | 85° | 3% | 13 mph SSE | 61% | 0 |
San Antonio hourly weather - Thursday, August 20
In San Antonio, expect a high near 102°F (39°C) around 5 PM and a low of 75°F (24°C) near 7 AM; precipitation risk peaks at 18% around 6 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 80° | 83° | 5% | 11 mph SSE | 70% | 0 | |
| 1 AM | Clear | 79° | 82° | 7% | 10 mph S | 76% | 0 | |
| 2 AM | Clear | 79° | 82° | 7% | 9 mph S | 75% | 0 | |
| 3 AM | Clear | 78° | 81° | 7% | 7 mph S | 75% | 0 | |
| 4 AM | Clear | 77° | 82° | 8% | 5 mph SSE | 77% | 0 | |
| 5 AM | Clear | 77° | 81° | 10% | 6 mph SSE | 80% | 0 | |
| 6 AM | Cloudy | 76° | 81° | 18% | 6 mph SSE | 82% | 0 | |
| 7 AM | Partly Cloudy | 75° | 80° | 14% | 6 mph SSE | 84% | 0 | |
| 8 AM | Partly Cloudy | 77° | 81° | 13% | 6 mph SSE | 81% | 0 | |
| 9 AM | Sunny | 80° | 83° | 6% | 7 mph S | 70% | 1 | |
| 10 AM | Sunny | 84° | 87° | 3% | 8 mph S | 58% | 3 | |
| 11 AM | Sunny | 89° | 91° | 1% | 9 mph S | 48% | 6 | |
| 12 PM | Sunny | 92° | 95° | 1% | 9 mph S | 40% | 8 | |
| 1 PM | Sunny | 96° | 95° | 1% | 9 mph SSE | 33% | 10 | |
| 2 PM | Sunny | 98° | 97° | 0% | 9 mph SSE | 27% | 10 | |
| 3 PM | Sunny | 100° | 98° | 1% | 8 mph SSE | 23% | 9 | |
| 4 PM | Cloudy | 101° | 98° | 5% | 8 mph SSE | 21% | 6 | |
| 5 PM | Cloudy | 102° | 99° | 5% | 7 mph SSE | 20% | 4 | |
| 6 PM | Overcast | 101° | 99° | 9% | 6 mph SE | 20% | 2 | |
| 7 PM | Overcast | 100° | 98° | 9% | 6 mph SE | 21% | 0 | |
| 8 PM | Overcast | 98° | 97° | 9% | 4 mph SE | 24% | 0 | |
| 9 PM | Overcast | 89° | 91° | 11% | 18 mph SSE | 47% | 0 | |
| 10 PM | Thundery outbreaks in nearby | 85° | 88° | 8% | 15 mph SSE | 57% | 0 | |
| 11 PM | Cloudy | 83° | 86° | 12% | 12 mph SSE | 64% | 0 |
Quick answers for the hours ahead
What is the warmest hour in San Antonio today?
Will it rain in San Antonio tonight?
When is the UV index highest in San Antonio today?
San Antonio hour-by-hour: what to expect
Over the next 24 hours in San Antonio, temperatures range from 76°F (24°C) around 7 AM up to 99°F (37°C) near 4 PM - about 3°F (2°C) above the typical August high of 96°F (36°C).
A stray shower can't be ruled out - Rain chances top out at 18% around 7 AM. UV reaches 10 (2 PM) - sun protection recommended through midday.
The “feels like” column blends humidity and wind into an apparent temperature - see how it works in our feels-like temperature guide. Planning further ahead? Check the San Antonio 14-day forecast or the monthly climate averages.