February in Brentwood averages a daily high of 16.3°C with nights around 6.6°C. Expect roughly 8.5 wet days totalling 63.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Brentwood is April–May.
Based on ANTIOCH PUMPING PLANT NUMBER 3, CA US (7.6km), 1995–2024. 21 years of February data.