January in League City averages a daily high of 17.5°C with nights around 6.9°C. Expect roughly 10 wet days totalling 114mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit League City is February–May.
Based on HOUSTON NATIONAL WEATHER SERVICE OFFICE, TX US (4.1km), 1995–2024. 30 years of January data.