December in Longview averages a daily high of 15.9°C with nights around 3.4°C. Expect roughly 8.9 wet days totalling 95.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Longview is March–April.
Based on LONGVIEW NUMBER 2, TX US (2.8km), 1995–2024. 21 years of December data.