July in Meridian averages a daily high of 34.4°C with nights around 17.2°C. Rain is rare — about 2.2 wet days and 5.3mm across the month. 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 July data.