Houston Texas January Weather 2025. What are the temperatures in houston in january? Expect 15°c daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in houston in january.

January heralds the start of a new year in houston a time when the city is winding down from the holiday season and starting to experience the full brunt of winter. 2025 will have a nice start, with plenty of sunshine for.