In 78589 San Juan, TX, the climate is typically warm and humid. Summers are hot with temperatures reaching into the upper 90s on average, while winters are mild with overnight temperatures dipping into the low 40s. The area receives an average of 32 inches of rainfall per year, mostly during the late spring and summer months. Despite its humid climate, San Juan is a great place to enjoy plenty of outdoor activities throughout the year.
San Juan (zip 78589), Texas gets 22 inches of rain, on average, per year. The US average is 38 inches of rain per year.
San Juan (zip 78589) averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 227 sunny days per year in San Juan (zip 78589). The US average is 205 sunny days.
San Juan (zip 78589) gets some kind of precipitation, on average, 59 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 97 degrees
Winter Low: the January low is 49
Rain: averages 22 inches of rain a year
Snow: averages 0 inches of snow a year