Houston is bracing for its first potential freeze of 2026 as Arctic air masses descend upon Southeast Texas. A series of cold fronts are forecast to sweep through the region, gradually lowering temperatures throughout the week. While Wednesday may offer a brief respite with slightly warmer conditions, the overall trend points towards a significant cool-down. The most potent cold front is anticipated to arrive this weekend, potentially driving overnight lows to near-freezing or slightly below on Sunday night and into Monday morning.