San Antonio, TX 14-Day Forecast
Texas, United States 🇺🇸
90°
Clear right now
Today: high 107°, low 78°
Updated 1 hour ago
San Antonio weather for the next 14 days
Thursday, August 27
Sunny High 101° Low 77°Precipitation
62%
· 0.52 in
Max wind
24 mph
Humidity
56%
UV index
11 - Very High
Sunrise / sunset
07:08 AM / 08:02 PM
Friday, August 28
Overcast High 101° Low 78°Precipitation
36%
· 0.01 in
Max wind
8 mph
Humidity
53%
UV index
9 - Very High
Sunrise / sunset
07:09 AM / 08:01 PM
Saturday, August 29
Sunny High 99° Low 76°Precipitation
2%
· 0.0 in
Max wind
14 mph
Humidity
50%
UV index
9 - Very High
Sunrise / sunset
07:09 AM / 07:59 PM
Sunday, August 30
Sunny High 99° Low 76°Precipitation
4%
· 0.0 in
Max wind
18 mph
Humidity
52%
UV index
9 - Very High
Sunrise / sunset
07:10 AM / 07:58 PM
Monday, August 31
Overcast High 99° Low 76°Precipitation
6%
· 0.0 in
Max wind
17 mph
Humidity
54%
UV index
9 - Very High
Sunrise / sunset
07:11 AM / 07:57 PM
Tuesday, September 1
Sunny High 100° Low 75°Precipitation
17%
· 0.0 in
Max wind
16 mph
Humidity
56%
UV index
9 - Very High
Sunrise / sunset
07:11 AM / 07:56 PM
Wednesday, September 2
Sunny High 99° Low 75°Precipitation
3%
· 0.0 in
Max wind
16 mph
Humidity
58%
UV index
9 - Very High
Sunrise / sunset
07:12 AM / 07:55 PM
Thursday, September 3
Partly Cloudy High 99° Low 75°Precipitation
6%
· 0.0 in
Max wind
14 mph
Humidity
59%
UV index
9 - Very High
Sunrise / sunset
07:12 AM / 07:54 PM
Friday, September 4
Overcast High 100° Low 76°Precipitation
9%
· 0.0 in
Max wind
14 mph
Humidity
57%
UV index
8 - Very High
Sunrise / sunset
07:13 AM / 07:52 PM
Saturday, September 5
Sunny High 100° Low 75°Precipitation
3%
· 0.0 in
Max wind
14 mph
Humidity
52%
UV index
9 - Very High
Sunrise / sunset
07:13 AM / 07:51 PM
Sunday, September 6
Sunny High 103° Low 77°Precipitation
17%
· 0.0 in
Max wind
9 mph
Humidity
41%
UV index
9 - Very High
Sunrise / sunset
07:14 AM / 07:50 PM
Monday, September 7
Sunny High 108° Low 81°Precipitation
57%
· 0.04 in
Max wind
17 mph
Humidity
32%
UV index
10 - Very High
Sunrise / sunset
07:14 AM / 07:49 PM
Tuesday, September 8
Overcast High 95° Low 69°Precipitation
76%
· 4.58 in
Max wind
24 mph
Humidity
64%
UV index
7 - High
Sunrise / sunset
07:15 AM / 07:48 PM
San Antonio 14-day outlook: the story
The warmest day of San Antonio's 14-day outlook is Monday, September 7 with a high near 108°F (42°C); the coolest night comes Tuesday, September 8, dipping to 69°F (20°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 101°F (38°C), about 5°F (3°C) above the typical August high of 96°F (36°C).
Precipitation is most likely on Thursday 27, Monday 7, Tuesday 8; the wettest day looks like Tuesday, September 8 with about 4.58 in (116.3 mm) expected. For the weekend, expect Saturday 99°F (37°C) and sunny / Sunday 99°F (37°C) and sunny.
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 3 of the next 14 days, peaking around Tuesday, September 8.
What will be the warmest day in San Antonio over the next 14 days?
Monday, September 7, with a forecast high near 108°F (42°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