March in Richland averages a daily high of 13.9°C with nights around 1.8°C. Expect roughly 8 wet days totalling 15.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Richland is May–June.
Based on RICHLAND, WA US (3.3km), 1995–2024. 28 years of March data.