March in Meridian averages a daily high of 12.9°C with nights around 1.4°C. Expect roughly 10.5 wet days totalling 35.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Meridian is June.
Based on BOISE AIR TERMINAL, ID US (13.2km), 1995–2024. 30 years of March data.