San Juan, TX Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for San Juan, TX in one place.
Sunny, with a high near 102. Heat index values as high as 108. South southeast wind 6 to 13 mph.
Local Weather Overview
This forecast page for San Juan, TX is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 23, 2026 6:52 PM CDT.
The active forecast window currently covers Aug 24 to Aug 29, 2026 for San Juan, TX.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 6:52 PM CDT
- Forecast office
- BRO
- Source
- NOAA / NWS
Daily Outlook
This Week in San Juan
Tuesday looks like the warmest upcoming period in San Juan at 103 degrees F.
Monday Night is the coolest period ahead with temperatures near 78 degrees F.
The strongest winds are forecast for Monday Night at about 7 to 15 mph SE.
The forecast from Aug 24 through Aug 29 stays mostly dry.
Forecast Details
- Last updated
- Aug 23, 2026 6:52 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- BRO
- Radar station
- KBRO
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 78. Heat index values as high as 105. Southeast wind 7 to 15 mph, with gusts as high as 24 mph.
Sunny, with a high near 103. Southeast wind 7 to 13 mph, with gusts as high as 22 mph.
Clear, with a low around 79. Southeast wind 7 to 15 mph, with gusts as high as 26 mph.
Sunny, with a high near 102. Southeast wind 7 to 13 mph, with gusts as high as 21 mph.
Mostly clear, with a low around 79. Southeast wind 6 to 15 mph, with gusts as high as 24 mph.
Sunny, with a high near 103. Southeast wind 6 to 12 mph.
Clear, with a low around 80. Southeast wind 6 to 14 mph, with gusts as high as 24 mph.
Sunny, with a high near 102. Southeast wind 6 to 13 mph, with gusts as high as 22 mph.
Mostly clear, with a low around 80.
Sunny, with a high near 101.
Mostly clear, with a low around 80.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Sunny
|
102°F |
6 to 13 mph
SSE
|
|
Monday Night
Aug 24
|
Mostly Clear
|
78°F |
7 to 15 mph
SE
|
|
Tuesday
Aug 25
|
Sunny
|
103°F |
7 to 13 mph
SE
|
|
Tuesday Night
Aug 25
|
Clear
|
79°F |
7 to 15 mph
SE
|
|
Wednesday
Aug 26
|
Sunny
|
102°F |
7 to 13 mph
SE
|
|
Wednesday Night
Aug 26
|
Mostly Clear
|
79°F |
6 to 15 mph
SE
|
|
Thursday
Aug 27
|
Sunny
|
103°F |
6 to 12 mph
SE
|
|
Thursday Night
Aug 27
|
Clear
|
80°F |
6 to 14 mph
SE
|
|
Friday
Aug 28
|
Sunny
|
102°F |
6 to 13 mph
SE
|
|
Friday Night
Aug 28
|
Mostly Clear
|
80°F |
6 to 15 mph
SE
|
|
Saturday
Aug 29
|
Sunny
|
101°F |
6 to 14 mph
SE
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
80°F |
8 to 15 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around San Juan.