San Antonio, TX 14-Day Forecast
Texas, United States 🇺🇸
77°
Clear right now
Today: high 98°, low 75°
Updated 16 min ago
San Antonio weather for the next 14 days
Thursday, September 17
Overcast High 94° Low 76°Precipitation
21%
· 0.0 in
Max wind
14 mph
Humidity
61%
UV index
8 - High
Sunrise / sunset
07:19 AM / 07:37 PM
Friday, September 18
Sunny High 96° Low 75°Precipitation
17%
· 0.01 in
Max wind
12 mph
Humidity
57%
UV index
9 - Very High
Sunrise / sunset
07:20 AM / 07:35 PM
Saturday, September 19
Sunny High 94° Low 73°Precipitation
3%
· 0.0 in
Max wind
13 mph
Humidity
56%
UV index
10 - Very High
Sunrise / sunset
07:20 AM / 07:34 PM
Sunday, September 20
Sunny High 96° Low 73°Precipitation
4%
· 0.0 in
Max wind
14 mph
Humidity
57%
UV index
9 - Very High
Sunrise / sunset
07:21 AM / 07:33 PM
Monday, September 21
Light rain shower High 94° Low 77°Precipitation
69%
· 0.39 in
Max wind
12 mph
Humidity
58%
UV index
8 - Very High
Sunrise / sunset
07:21 AM / 07:32 PM
Tuesday, September 22
Sunny High 92° Low 75°Precipitation
17%
· 0.0 in
Max wind
11 mph
Humidity
59%
UV index
8 - Very High
Sunrise / sunset
07:22 AM / 07:30 PM
Wednesday, September 23
Partly Cloudy High 96° Low 74°Precipitation
7%
· 0.0 in
Max wind
11 mph
Humidity
59%
UV index
9 - Very High
Sunrise / sunset
07:22 AM / 07:29 PM
Thursday, September 24
Sunny High 94° Low 76°Precipitation
57%
· 0.09 in
Max wind
10 mph
Humidity
55%
UV index
8 - Very High
Sunrise / sunset
07:23 AM / 07:28 PM
Friday, September 25
Sunny High 95° Low 77°Precipitation
57%
· 0.07 in
Max wind
12 mph
Humidity
43%
UV index
8 - Very High
Sunrise / sunset
07:24 AM / 07:27 PM
Saturday, September 26
Sunny High 92° Low 73°Precipitation
1%
· 0.0 in
Max wind
9 mph
Humidity
23%
UV index
8 - Very High
Sunrise / sunset
07:24 AM / 07:26 PM
Sunday, September 27
Sunny High 91° Low 71°Precipitation
2%
· 0.0 in
Max wind
8 mph
Humidity
34%
UV index
8 - Very High
Sunrise / sunset
07:25 AM / 07:24 PM
Monday, September 28
Sunny High 88° Low 70°Precipitation
59%
· 0.17 in
Max wind
17 mph
Humidity
55%
UV index
7 - High
Sunrise / sunset
07:25 AM / 07:23 PM
Tuesday, September 29
Light rain shower High 77° Low 72°Precipitation
82%
· 0.22 in
Max wind
20 mph
Humidity
79%
UV index
5 - Moderate
Sunrise / sunset
07:26 AM / 07:22 PM
San Antonio 14-day outlook: the story
The warmest day of San Antonio's 14-day outlook is Wednesday, September 16 with a high near 98°F (37°C); the coolest night comes Monday, September 28, dipping to 70°F (21°C). The trend points cooler: week two runs about 4°F below week one. Highs over the next two weeks average 95°F (35°C), about 4°F (2°C) above the typical September high of 91°F (33°C).
Precipitation is most likely on Monday 21, Thursday 24, Friday 25, Monday 28 and beyond; the wettest day looks like Monday, September 21 with about 0.39 in (9.9 mm) expected. For the weekend, expect Saturday 94°F (34°C) and sunny / Sunday 96°F (36°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 5 of the next 14 days, peaking around Monday, September 21.
What will be the warmest day in San Antonio over the next 14 days?
Wednesday, September 16, with a forecast high near 98°F (37°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