July in Billings averages a daily high of 32.2°C with nights around 14.4°C. Expect roughly 6.5 wet days totalling 29.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Billings is June.
Based on BILLINGS WATER TREATMENT PLANT, MT US (2km), 1995–2024. 30 years of July data.