October in Casper averages a daily high of 16.1°C with nights around 1.2°C. Expect roughly 5.2 wet days totalling 33.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Casper is June.
Based on CASPER WASTE WATER TREATMENT PLANT, WY US (1.8km), 1995–2024. 22 years of October data.