San Antonio, TX 14-Day Forecast
Texas, United States 🇺🇸
102°
Sunny right now
Today: high 102°, low 74°
Updated 7 hours ago
San Antonio weather for the next 14 days
Monday, August 17
Sunny High 102° Low 76°Precipitation
2%
· 0.0 in
Max wind
16 mph
Humidity
52%
UV index
10 - Very High
Sunrise / sunset
07:03 AM / 08:12 PM
Tuesday, August 18
Sunny High 103° Low 76°Precipitation
2%
· 0.0 in
Max wind
16 mph
Humidity
51%
UV index
10 - Very High
Sunrise / sunset
07:03 AM / 08:11 PM
Wednesday, August 19
Sunny High 104° Low 74°Precipitation
2%
· 0.0 in
Max wind
17 mph
Humidity
50%
UV index
10 - Very High
Sunrise / sunset
07:04 AM / 08:10 PM
Thursday, August 20
Sunny High 104° Low 74°Precipitation
5%
· 0.0 in
Max wind
18 mph
Humidity
57%
UV index
10 - Very High
Sunrise / sunset
07:05 AM / 08:09 PM
Friday, August 21
Sunny High 104° Low 76°Precipitation
4%
· 0.0 in
Max wind
18 mph
Humidity
57%
UV index
9 - Very High
Sunrise / sunset
07:05 AM / 08:08 PM
Saturday, August 22
Patchy rain nearby High 97° Low 76°Precipitation
68%
· 0.29 in
Max wind
13 mph
Humidity
64%
UV index
8 - Very High
Sunrise / sunset
07:06 AM / 08:07 PM
Sunday, August 23
Sunny High 96° Low 77°Precipitation
57%
· 0.09 in
Max wind
14 mph
Humidity
62%
UV index
9 - Very High
Sunrise / sunset
07:06 AM / 08:06 PM
Monday, August 24
Sunny High 97° Low 76°Precipitation
3%
· 0.0 in
Max wind
10 mph
Humidity
56%
UV index
9 - Very High
Sunrise / sunset
07:07 AM / 08:05 PM
Tuesday, August 25
Sunny High 99° Low 75°Precipitation
2%
· 0.0 in
Max wind
11 mph
Humidity
54%
UV index
9 - Very High
Sunrise / sunset
07:07 AM / 08:04 PM
Wednesday, August 26
Sunny High 102° Low 77°Precipitation
2%
· 0.0 in
Max wind
13 mph
Humidity
49%
UV index
9 - Very High
Sunrise / sunset
07:08 AM / 08:03 PM
Thursday, August 27
Sunny High 102° Low 78°Precipitation
1%
· 0.0 in
Max wind
14 mph
Humidity
43%
UV index
9 - Very High
Sunrise / sunset
07:08 AM / 08:02 PM
Friday, August 28
Sunny High 103° Low 76°Precipitation
2%
· 0.0 in
Max wind
13 mph
Humidity
51%
UV index
9 - Very High
Sunrise / sunset
07:09 AM / 08:01 PM
Saturday, August 29
Sunny High 103° Low 76°Precipitation
2%
· 0.0 in
Max wind
10 mph
Humidity
54%
UV index
9 - Very High
Sunrise / sunset
07:09 AM / 07:59 PM
San Antonio 14-day outlook: the story
The warmest day of San Antonio's 14-day outlook is Wednesday, August 19 with a high near 104°F (40°C); the coolest night comes Sunday, August 16, dipping to 74°F (23°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 102°F (39°C), about 6°F (3°C) above the typical August high of 96°F (36°C).
Precipitation is most likely on Saturday 22, Sunday 23; the wettest day looks like Saturday, August 22 with about 0.29 in (7.3 mm) expected. For the weekend, expect Sunday 102°F (39°C) and sunny / Saturday 97°F (36°C) and patchy rain nearby.
For typical conditions month by month, see the San Antonio climate & average temperatures guide.
San Antonio forecast questions
Will it rain in San Antonio this week?
The forecast currently shows meaningful precipitation chances on 2 of the next 14 days, peaking around Saturday, August 22.
What will be the warmest day in San Antonio over the next 14 days?
Wednesday, August 19, with a forecast high near 104°F (40°C).
How accurate is a 14-day forecast for San Antonio?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in San Antonio by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 63° | 44° | 8 | 2.2 in | 7.4 h/day | 65% |
| February | 67° | 47° | 8 | 2.1 in | 7.0 h/day | 67% |
| March | 76° | 56° | 10 | 2.5 in | 7.8 h/day | 66% |
| April | 81° | 61° | 12 | 4.1 in | 8.8 h/day | 67% |
| May | 86° | 69° | 16 | 6.8 in | 9.6 h/day | 74% |
| June | 93° | 74° | 11 | 2.9 in | 11.6 h/day | 69% |
| July | 96° | 76° | 7 | 2.6 in | 12.0 h/day | 64% |
| August | 96° | 77° | 7 | 3.1 in | 11.6 h/day | 62% |
| September | 91° | 73° | 10 | 4.0 in | 10.3 h/day | 66% |
| October | 83° | 64° | 8 | 3.8 in | 9.2 h/day | 63% |
| November | 71° | 54° | 9 | 2.8 in | 7.0 h/day | 70% |
| December | 66° | 48° | 8 | 2.3 in | 6.7 h/day | 69% |
14-day forecasts nearby