We cannot always determine what the weather will be like in Wyoming. Snow, rain, or sleet may occur at anytime, though it may also be quite balmy in September and October. You can expect the temperatures to be between 10-30 degrees in the mornings and between 20-80 degrees in the afternoons. Layering your clothing is the most effective way to stay comfortable. Nights can be on the cool side, but all of our tents are equipped with woodstove heaters; they also do a good job of drying out wet gear.