Weather in San Juan, TX
Updated 2026-08-11 12:00 local time · ZIP codes 78589
Partly cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
91°1% rain
99°2% rain101°2% rain101°2% rain101°1% rain102°1% rain99°1% rain95°1% rain90°2% rain
87°4% rain86°6% rain
85°10% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 10%).
It feels like 97°F with winds near 16 mph.
91°F, 1% rain chance and 16 mph wind.
Visibility is around 10 mi; gusts may reach 23 mph.
Current temperature is 91°F, wind 16 mph, rain chance up to 10%.
UV index is 10. Use shade, sunscreen, a hat and sunglasses.
San Juan weather today
Partly cloudy and 91°F in San Juan, TX. Today's high is 102°F with a 4% rain chance. Winds are around 16 mph with gusts near 18 mph. Relative humidity is 59%, pressure is 30.06 inHg, and visibility is about 10 miles.
Tonight and tomorrow in San Juan
Sunrise is at 07:03 AM and sunset is at 08:12 PM. Tomorrow's forecast calls for Sunny with a high near 102°F and a low near 81°F. The maximum rain chance is 3%.