January in Rowlett averages a daily high of 13.8°C with nights around 0.9°C. Expect roughly 6.9 wet days totalling 63.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Rowlett is March–April.
Based on LAVON DAM, TX US (16.4km), 1995–2024. 14 years of January data.